<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/elements/1.1/"><channel><title>livinghouse</title><description>livinghouse</description><link>https://www.livinghouse.org.nz/blog</link><item><title>Zero Waste Living - what can you do at your house</title><description><![CDATA[Here at the Living House we have been trying (very hard) to implement zero waste living in our current home (The House of Payne) so when we move into the Living House we are zero waste. We've made a lot of awesome changes, with the help of some great products from some inspirational companies, so we thought that we would share some of these with you. The most important thing we have learnt is "You don’t need to buy a brand new toolkit on the first day". Apparently the most common mistake that<img src="http://static.wixstatic.com/media/78d646_23edc28035a2480a844d0553e2226735%7Emv2.jpg/v1/fill/w_628%2Ch_450/78d646_23edc28035a2480a844d0553e2226735%7Emv2.jpg"/>]]></description><link>https://www.livinghouse.org.nz/single-post/2018/10/03/Zero-Waste-Living---what-can-you-do-at-your-house</link><guid>https://www.livinghouse.org.nz/single-post/2018/10/03/Zero-Waste-Living---what-can-you-do-at-your-house</guid><pubDate>Wed, 03 Oct 2018 01:30:19 +0000</pubDate><content:encoded><![CDATA[<div><div>Here at the Living House we have been trying (very hard) to implement zero waste living in our current home (The House of Payne) so when we move into the Living House we are zero waste. </div><div>We've made a lot of awesome changes, with the help of some great products from some inspirational companies, so we thought that we would share some of these with you.</div><div> The most important thing we have learnt is &quot;You don’t need to buy a brand new toolkit on the first day&quot;.Apparently the most common mistake that people make when embarking on the zero waste lifestyle is buying all of this stuff brand new on the first day, without thinking first whether they already own something appropriate, whether they really need it at all, and whether these products are built to last – and if they’re not, how they will be disposed of.</div><div>If you can, hold back from buying anything new. Get a feel for what you might need, and make do with what you have. Give it time. That way, when you come to buy the things you do need, you will make better choices.</div><div>The next is &quot;Do not get rid of perfectly good things for “better” things&quot;.Zero waste is all about not wasting stuff, right? So replacing stuff that you already have with stuff that’s a little bit “more” zero waste really doesn’t make any sense. Here is some of the journey that we have undertaken in a couple of rooms in the house..........</div><div>KITCHEN</div><div>The kitchen is the place that we started trying to go zero waste as we found during our baseline exercise that this was the place that we created the most waste. Here is what we have done:</div><div>Reusable containers and glass jars</div><div>We sorted out our kitchen and started saving glass jars as we learnt that zero waste shopping is about shopping “from bulk” rather than “in bulk”!</div><img src="http://static.wixstatic.com/media/78d646_23edc28035a2480a844d0553e2226735~mv2.jpg"/><div>Then we stopped buying most of our food at the supermarket and instead started buying at a bulk food store (BIN INN in Howick) as well as buying our meat direct from the local butcher (Wholesale Meat Direct Beachlands) and our fresh veges from a local farm (Clevedon Herbs and Produce). We found that doing all of these things was EASY and didn't really require that much extra effort from us. </div><img src="http://static.wixstatic.com/media/78d646_e5ec1a1c508040318cc5556cb04f9edf~mv2.jpg"/><div>The butcher is just done the road and all that is required is for us to drop labelled containers down at the start of the week (with what meat we want in each one) and they will fill them up and then call us when they are ready. We order from Clevedon herbs and produce online and they deliver to us. For Bin Inn we plan our visit and go once a month when we need to go into Howick anyway. </div><div>Beeswax Wraps</div><div>We ditched the cling film (Glad Wrap) and bought ourselves some beeswax wraps to use for the school lunches as well as to cover food in the fridge. </div><img src="http://static.wixstatic.com/media/78d646_7716776afae444d4af831f85d6789944~mv2_d_1458_1458_s_2.jpg"/><div>Compost / Bokashi / Worm Farm</div><div>We already had a compost bin that we put our food scraps in (did you realise that around 40% of residential waste in NZ is compostable) so that isn't a change for us. What has been a change however is the addition of a bokashi bin and worm farm to our food scrap process. Now we give most of our green waste to our worms. We then bokashi (or ferment) the rest of the scraps and then add the fermented product to the compost when it is ready. This helps stop our dog digging up the compost (she seems to love bananas!) </div><img src="http://static.wixstatic.com/media/78d646_600fc4fc1a9f40e6aca3542f8ef5c40d~mv2.jpg"/><img src="http://static.wixstatic.com/media/78d646_97bd51be35454ec6b44661330b38db24~mv2.jpg"/><div>BATHROOM</div><div>Toothbrushes</div><div>We replaced our old plastic toothbrushes with bamboo brushes when they wore out. There are loads of great bamboo toothbrush options out there and they can all be composted!</div><img src="http://static.wixstatic.com/media/78d646_11b494a9a00743cdac441ec76e1a9536~mv2.jpg"/><div>Shampoo and conditioner</div><div>We ditched the plastic bottles of shampoo and conditioner and have instead swapped to bars. These last forever and can save up to 8 plastic bottles per bar!</div><img src="http://static.wixstatic.com/media/78d646_b568b2bccd1c49bba85284720a423d4c~mv2.jpg"/><div>Body Products</div><div>As per the above we now only purchase bar soaps and moisturisers that are wrapped in plastic or cardboard.</div><div>Razors</div><div>We said goodbye to the plastic disposable razor and bought ourselves each a safety razor and have never looked back. The best shaves we have ever had!</div><img src="http://static.wixstatic.com/media/78d646_ed436dc87c2948d3920c0e4a64e48ae6~mv2.jpg"/><div>Toilet Brushes</div><div>We haven't gotten around to this yet, but as soon as our plastic toilet brushes break, we will replace them with wood toilet brushes. These are compostable at the end of life, unlike plastic!</div><div>SUMMARY</div><div>Doing this has cut out around 75% of our waste in total. Most of what heads out of the door now is soft plastics that we can't yet avoid (like cheese packaging and Chelle's hot chocolate sachets) as well as glass from wine and beer bottles which all heads off the recycling. The actual waste that heads to landfill is very small. So small in fact that we don't put out a bin every week now. It probably goes out once a month at the moment. </div><div>So good progress has been made on our zero waste (living) front. </div></div>]]></content:encoded></item><item><title>An exciting workshop.........</title><description><![CDATA[We were blessed to be able to run our first proper workshop during the week of April 23-27. The purpose of this workshop was to build a new boundary fence and to experiment with different colours and textures in rammed earth. Our wonderful neighbours agreed to allow us to pull down the existing boundary fence and create a HUGE amount of noise for the entire week, even though they had a brand new baby!It took us around 2 weeks to create this fence in the end. First of all we had to take down the<img src="http://static.wixstatic.com/media/78d646_8b656b7fae074d4b8c0a560048e8ba34%7Emv2.jpg/v1/fill/w_629%2Ch_1117/78d646_8b656b7fae074d4b8c0a560048e8ba34%7Emv2.jpg"/>]]></description><link>https://www.livinghouse.org.nz/single-post/2018/04/29/An-exciting-workshop</link><guid>https://www.livinghouse.org.nz/single-post/2018/04/29/An-exciting-workshop</guid><pubDate>Sat, 28 Apr 2018 20:32:51 +0000</pubDate><content:encoded><![CDATA[<div><div>We were blessed to be able to run our first proper workshop during the week of April 23-27. The purpose of this workshop was to build a new boundary fence and to experiment with different colours and textures in rammed earth. </div><div>Our wonderful neighbours agreed to allow us to pull down the existing boundary fence and create a HUGE amount of noise for the entire week, even though they had a brand new baby!</div><div>It took us around 2 weeks to create this fence in the end. First of all we had to take down the existing fence. Then (with the amazing support of our sponsor Firth who provided the concrete) we had to pour a new footing. </div><div>Then we had to erect our formwork down the full 18m of fence. This time is was a big thanks to Laminex who provided the amazing strandfloor. Their boards are amazing and make brilliant rammed earth formwork. You can see some of their boards in the photo below. </div><img src="http://static.wixstatic.com/media/78d646_8b656b7fae074d4b8c0a560048e8ba34~mv2.jpg"/><div>And who can forget the amazing Jay and Jane who came up from Taupo for the week to help us build the fence and learn about rammed earth. What superstars they were! Garry and Sandra Payne also put in a huge effort helping us not only with the formwork but also with a fair few days ramming!</div><img src="http://static.wixstatic.com/media/78d646_89a689c16d2941b494524b9e2d6a9bbb~mv2.jpg"/><div>On Thursday the artists came to site to learn about rammed earth and what is possible with it. They presented us with an amazing carving that we put in the formwork to emboss into the fence. Reuben and Jay can be seen in the image below putting some 45 degree angles on the carving to allow it to easily come off the rammed earth at the end (a note to anyone else wanting to do this, you must have a 45 degree angle on all carvings or embossings otherwise they wanted release the rammed earth wall when you are trying to reveal!)</div><img src="http://static.wixstatic.com/media/78d646_3c692f5482034e4d9ceb304223e3b510~mv2.jpg"/><div>We had a huge amount of fun with the Peter Felloxides playing with trying to create different colours. It was the first time that we had gotten to play with the greens and blues. Such fun! And Peter Fell even provided us with a little white cement to really allow the greens and blues to pop. Our incredible supporter Golden Bay Cementhas been provided us with their wonderful cement for the majority of the walls but we found that the grey of the cement fought with a few of the oxides so we wanted to see what white cement would do. And we had a great result!</div><div>We also took the opportunity to play with some textures and threw sea glass and shells into the wall to see what would happen. The glass didn't really turn out as hoped, but the shells are amazing! So excited with the shells for Chelle!</div><img src="http://static.wixstatic.com/media/78d646_9c86f1b2b7ef4cca80afade6776a5d75~mv2.jpg"/><div>The workshop also helped bring people together. Jo (one of the artists) turned out to be a friend of Jane Henley - first CEO of the NZGBC who I have known for years! What a small world it is! So of course we had to take a selfie and send it to her :)</div><img src="http://static.wixstatic.com/media/78d646_06fca3837b634f0e94d42f29cc1879e6~mv2.jpg"/><div>And finally here is what the wall looks like. Everyone was super excited to see it revealed and we had a fantastic unveiling ceremony on site with everyone. </div><img src="http://static.wixstatic.com/media/78d646_e730e54b0336495bbffc311466686074~mv2.jpg"/><img src="http://static.wixstatic.com/media/78d646_163a2a9b168f4b868adaa9c4855e02e0~mv2.jpg"/></div>]]></content:encoded></item><item><title>Construction Waste – A New Zealand Tragedy</title><description><![CDATA[Yesterday I (Rochelle) and Matt from Evident visited the Green Gorilla waste processing plant in Onehunga, Auckland. Going into that visit I was a little bit cocky, thinking that I knew what happened with construction waste in Auckland and that maybe I actually perhaps really need to go on that visit. I am glad that I did go because what I saw there knocked my socks off. I work in the construction industry, and have done for nearly 20 years. In addition I am a Green Star and Homestar Assessor<img src="http://img.youtube.com/vi/53WEF2LEPsA/mqdefault.jpg"/>]]></description><link>https://www.livinghouse.org.nz/single-post/2018/03/27/Construction-Waste-%E2%80%93-A-New-Zealand-Tragedy</link><guid>https://www.livinghouse.org.nz/single-post/2018/03/27/Construction-Waste-%E2%80%93-A-New-Zealand-Tragedy</guid><pubDate>Mon, 26 Mar 2018 19:19:30 +0000</pubDate><content:encoded><![CDATA[<div><div>Yesterday I (Rochelle) and Matt from Evident visited the Green Gorilla waste processing plant in Onehunga, Auckland. Going into that visit I was a little bit cocky, thinking that I knew what happened with construction waste in Auckland and that maybe I actually perhaps really need to go on that visit. I am glad that I did go because what I saw there knocked my socks off. I work in the construction industry, and have done for nearly 20 years. In addition I am a Green Star and Homestar Assessor and therefore I would like to think that I am pretty, jolly knowledgeable about what happens to construction waste in NZ (and I now hate to say it, but I was comfortable with what we are doing). Boy have I changed my mind!</div><div>The visit was extremely eye opening, and really rather depressing. To be clear Green Gorilla itself was not depressing, they are in fact a shining light and source of inspiration for what could be possible. What was extremely depressing was the waste that I saw them processing.</div><iframe src="https://www.youtube.com/embed/53WEF2LEPsA"/><div>The facility that Green Gorilla have is amazing (see the video above!). The very first thing I saw as I arrived was the charging points for the EVs. Most of the cars that the sales team drive are EVs. That is fantastic. And a lot of their processing equipment is electric as well as a trial delivery truck. That certainly started the day off on the right foot. However it went a little down hill from that point on. </div><img src="http://static.wixstatic.com/media/78d646_f241948571e44880bee3972d5f769e1d~mv2.jpg"/><img src="http://static.wixstatic.com/media/78d646_130d07f06aeb407b92c8b1519d3ef30a~mv2.jpg"/><div>Matt and I walked into Green Gorilla with a single, big question in mind. We want to use Green Gorilla to provide waste solutions on The Living House and our original plan was to ask what waste streams that can’t divert from landfill into recycling, with the idea that we would then attempt to do something else with those waste streams and document that part of our journey. However during the course of our tour it became very apparent that that was not the real question that we needed to ask. The actual question was &quot;what waste can you divert from landfill?&quot; This is the answer:</div><div>TimberPlasterboardSteelCardboardConcrete and heavy ceramic</div><div>While we were there in the plant watching the conveyor go past I saw plastic products and insulation offcuts merrily going past me on their way to landfill. In my ignorance I had previously assumed that these items would be diverted from landfill by Green Gorilla. But it turns out that they can’t do that and thus to landfill it goes. </div><img src="http://static.wixstatic.com/media/78d646_6f6e6ceadfc9432e9114594d6e569b94~mv2.jpg"/><div>By the time the insulation has gone in the skip and turned up at the processing plant it is totally soiled and no insulation manufacturer will take it back, and there are no other options for recycling insulation. So one of the biggest take home lessons I learned yesterday was insulation needs to be segregated at source, on site, and put into a clean bag (perhaps the very bag that it came in the first place). If it is kept clean it can be reused or recycled. If it is soiled by going in a skip, then it landfill fodder.</div><div>Plasterboard was another eye opener. If plasterboard comes to the processing facility in a skip then Green Gorilla can divert around 80% from landfill. However if it comes to them in their specialised plasterboard bags, then they can divert 100% of it from landfill. The have a special plasterboard crushing machine that takes the plasterboard and turns it into a raw material that is used by fertiliser and compost companies. However this brings my onto something that makes me want to cry.</div><img src="http://static.wixstatic.com/media/78d646_cca85838faae4ead881a9d6852418e3e~mv2.jpg"/><div>Large sheets of usable plasterboard that are put in skips and sent for recycling. WHY! This is an amazing resource that a lot of people have spent time, effort, money and most importantly natural capital to create. Why is it going to a waste facility at all? Why isn’t it being saved and stored somewhere for reuse. Why isn’t it being transported separately to a resource recovery centre for people to come and purchase for small fix up and renovation projects. Why as a society are we allowing this rampant waste and consumerism to occur.</div><div>The next item on the waste diversion list totally sums this up. Whilst at the plant we were shown an enormous pile of waste pallets.</div><img src="http://static.wixstatic.com/media/78d646_000360443ecf4a18ae3b703176ff7498~mv2.jpg"/><div>These pallets actually have a great future. They are chipped up and then purchased by Golden Bay Cement who use these chips to replace the coal they used to use to fire their kilns that dry the cement. Apparently they are currently replacing around 40% of the coal with this wood chip. So that is a great success story.</div><div>However what makes me so sad is the fact that these pallets are in the waste stream in the first place. A large number of them have probably only been used once and then put in a skip on a building site. Think about all the work and resources that goes into making a pallet. The years that go into growing the tree, the effort to fell the tree, the machining and labour to create the pallet. The trucking, the nails etc. And then it gets used once and skipped! It should be illegal to put pallets in skips. If they are falling apart then they should be broken down into individual timber pieces. If they can be fixed and reused as pallets, then they should be. Why doesn’t this happen?</div><div>The cynic in mean says $$. If people start reusing pallets, then demand for new pallets decreases, meaning manufacturers don’t need to produce as many and therefore they don’t need as many trees and jobs and growth are lost. This is a bad economic story, however it would be a great environmental story and it is one that needs to occur. If we want to survive on this planet we have to start questioning the way that we do things and look at our processes and call out the crazy things and make changes. Sending good and usable products to landfill and recycling is crazy. It needs to stop. </div><img src="http://static.wixstatic.com/media/78d646_b026a43a41ca45e4a5704c72d2017574~mv2.jpg"/><div>While Green Gorilla are doing fantastic work diverting waste from landfill, what they are doing is downcycling. As far as I am concerned recycling (or downcycling) is not an option. It is almost the equivalent of landfill and should be a last resort. The best waste is the waste that you do not create, and then if you do end up creating waste you should be trying to reuse that waste in its original form. </div><div>On the Living House project we are attempting to be zero waste and if that fails then we will be zero waste to landfill (because we pretty much have to be for the Living Building Challenge). This is tough and we have already hit road blocks on this journey. We will be documenting our particular journey to zero waste in different ways, including our Facebook page, these blog posts as well as some short videos and narratives that will be coming out soon. What I would like to share with you now is my thoughts on how we can all make a difference out there in the construction waste market.</div><div>Builders and construction workers</div><div>As far as I am concerned you guys (and girls) are key to this. You are working on the coal face and it is you who are putting the waste in the skip bins. Stop doing that! Here are some easy things that you can do to help:</div><div>Go and visit the Green Gorilla facility. Don’t just send the environmental managers. That is preaching to the choir. Send the people at the coal face. Send the workers who actually put the waste in the skip. Take your entire team to see what happens to that waste that they put in a skip. It will really open your eyes. Green Gorilla are happy to run tours. Just contact them Phil Yates pyates@greengorilla.co.nz. They would love to take you on a tour of their facility.<div>Once you have visited their facility change your waste bin provider to either them or another company that can divert at least some waste from landfill. In Auckland there are two great companies that I am aware of that do this. <a href="http://www.greengorilla.co.nz">Green Gorilla</a> and <a href="http://www.junkrun.co.nz/builders-waste-removal/">Junk Run</a> . If you do nothing else from my list except contact these companies and switch your bins to one of them, then you have still made a massively positive step towards reducing your impact on the environment. I’ve researched this and Green Gorilla in particular costs exactly the same as other skip providers in Auckland. So if it doesn’t cost any more then why on earth are you not using them! Call or email them now Clinton Jones cjones@greengorilla.co.nz.</div>When you switch to Green Gorilla or Junk Run get them to also send you a separate bag for you to put plasterboard in. If you keep it separate then it can be 100% diverted from landfill. And stop telling me that you don't have the room on site to segregate waste. A small bag for plasterboard and another for insulation will not be there for the whole project and will not take up that much space. I'm confident that you can make it work.<div>Get another bag for insulation. Keep the offcuts clean and put them in this bag. When it is full send it back to your insulation provider. I’m not sure about Pink Batts, Mammoth or Knauf but Autexhave confirmed to me that if the material is clean that they can put the offcuts back into the manufacturing process. This is a massive win and should be happening on every construction site. Alternatively take a photo of the bag(s) of off cuts and put it up on Trade Me, Civilshare (www. civilshare.co.nz) or a local giving page and sell/give it to someone who can reuse it. Whatever you do, don’t stick it in the skip bin. If you do that it will end up in landfill.</div>PVC pipe. If you put this in a skip it will also end up in landfill. Don’t do it. PVC is horrible and toxic and takes forever to break down. Collect it separately on site in another bag, and send it back to Marley who will also take it back and put it back into the manufacturing stream (if it is their pipe).Contact Auckland Council (or whatever your local council is) and get a separate household recycling bin for your 'household waste'. I'm talking about your glass bottles, aluminium cans, plastic water bottles (but please stop using those entirely - they are bad for your health!). If you put these in the skip bin they will end up in landfill. Make sure you had a separate bin for your 'staff' waste and make sure you tell your staff WHY it is important that they use that bin for these items. </div><div>Quantity Surveyors (and builders)</div><div>Stop over ordering. Apparently it is a common practise to over order plasterboard and timber by 20% to allow for wastage. Are you kidding me!!!!! 1/5 of all building materials that we make is literally just being trucked straight to land fill. If anything defines the craziness of our current system, that has to be it! Only order what you need! Or even better order slightly less, when you are nearly finished measure up what we require to finish and then purchase only that (or get it from another one of your sites who may have extra!) </div><div>New Zealand Green Building Council</div><div>Stop giving the waste industry a free ride. While Homestar v4 does have a point for on site segregation for the number of points on offer for waste greatly exceeds our expectations of the industry. The site waste management plans that we accept are pathetic and are just a token nod in this direction that people write once and then put them on a shelf never to be looked at again. These SWMPs are a waste of points if the builders are co-mingling waste on site and using someone like Green Gorilla to sort it out for them elsewhere. This smacks of passing the buck and green building rating tools should be encouraging builders to take responsibility for waste on site, not giving them lots of points for business as usual. </div><div>More points should be given for on site segregation and we should be focusing on specific waste streams like PVC and plastics that are used on site and that go straight to landfill all the time. Timber, steel, concrete, plasterboard are all easy wins these days. We need to start focusing on the harder issues as well. </div><div>Homestar is actually in a good place when compared to Green Star. Green Star's waste points are quite frankly a travesty. We should be adopting the GBCA's waste credits immediately.</div><div>This is all feedback that I have given in various formats before so it shouldn't be news to the NZGBC, however for the rest of you out there in the market, you should think about this as well and if you agree you should contact the NZGBC and also tell them your thoughts on how you think green building rating tools should be encouraging change in the market. We hear a lot from the industry about how hard it is, and how they can't fit more than one bin on site, and how they can't do this or that, but my experience is that once you change the way you approach things, and try something difference (or if you are forced to make a change) then it quickly becomes a habit and you wonder why you ever did it the other way to begin with. We need to do that with construction waste. And we need to start now!</div><div>Architects and engineers</div><div>I see you as the biggest part of this waste problem. You design the buildings that the builders have to build and you design in massive amounts of waste. The entire way we build here creates waste. Light weight timber framed construction should be banned in my view (if I was in charge that would be done tomorrow!).</div><div>We have quite specifically not used this approach on the Living House and we did that for two reasons. Well actually three. Maintenance, durability and waste. The standard timber framed wall uses at least 14 different products and materials in it (take a look here <a href="https://www.livinghouse.org.nz/rammed-earth">https://www.livinghouse.org.nz/rammed-earth</a> ). All of these materials create their own forms of waste. For example you have paint tins, paint brushes, plasterboard sealing tape, masking tape, plastic drop sheets etc. The list goes on and on. And all of it goes to landfill. The Living House is being built out of rammed earth. We have eliminated all of these waste streams before we start building through our choice of wall structure. AND THIS WAS DELIBERATE!</div><div>So architects, the biggest thing that you could do to help, is to stop designing waste in the first place. Stop designer light weight timber framed walls with weatherboard/brick veneer/metal cladding etc and start designing out of insulated solid block work walls, double skinned brick, SIPS, hemp, straw bale, rammed earth etc. All of these alternative options are possible and easily doable. You just need to start doing.</div><div>SIPS in particular is really starting to come into its own. I would encourage you to use these products in their raw form, please don’t use SIPS and then strap and line it with plasterboard. That is just designing waste in again. Use and expose the beauty of the raw SIPS boards. Seal them with a natural beeswax. Keep the thermal mass of the brick or concrete. Put the insulation on the inside of these walls. Just start thinking differently. It has already been done by others, you just need to start doing it as well.</div><div>Summary</div><div>I'm sorry this is a long blog. It is an important issue and is something that we do really badly here in NZ. I would encourage you to share this blog widely if you like it. Try and get it in front of builders, architects and home owners. I see this as the very start of a conversation about construction waste and what we can change. The more people we can involve the better.</div><div>Keep tabs on our as we complete our zero construction waste journey and see how we go as well. Learn from our mistakes and our lessons.</div><div>Our biggest mistake to date has been not storing our insulation offcuts well enough. These are now soiled and can't be taken back by Autex. We have however found someone who is going to use them to insulate the walls of an old bus, so we have kept them our of landfill. But in the future we will make sure that we protect and store our insulation offcuts better so we can return them to Autex. </div></div>]]></content:encoded></item><item><title>Zero Waste - An Operational Baseline</title><description><![CDATA[As many of you may remember the Living House has received some wonderful funding from the Auckland Council Waste Minimisation Fund that is allowing us to share our zero waste journey with you all. At the start of this process we defined waste as zero waste to landfill, thinking that recycling was all good. However since then I have been doing a lot of research and reading about plastics in particular how little can in fact be recycled. Especially since China has stopped accepting the world’s<img src="http://static.wixstatic.com/media/78d646_5f38336701d244e09bcfe6a39652043d%7Emv2_d_2592_1944_s_2.jpg/v1/fill/w_629%2Ch_471/78d646_5f38336701d244e09bcfe6a39652043d%7Emv2_d_2592_1944_s_2.jpg"/>]]></description><dc:creator>Rochelle Payne</dc:creator><link>https://www.livinghouse.org.nz/single-post/2018/03/01/Zero-Waste---An-Operational-Baseline</link><guid>https://www.livinghouse.org.nz/single-post/2018/03/01/Zero-Waste---An-Operational-Baseline</guid><pubDate>Thu, 01 Mar 2018 05:47:05 +0000</pubDate><content:encoded><![CDATA[<div><div>As many of you may remember the Living House has received some wonderful funding from the Auckland Council Waste Minimisation Fund that is allowing us to share our zero waste journey with you all. At the start of this process we defined waste as zero waste to landfill, thinking that recycling was all good. However since then I have been doing a lot of research and reading about plastics in particular how little can in fact be recycled. <a href="https://www.stuff.co.nz/environment/100286427/21m-of-nz-waste-turned-away-from-china">Especially since China has stopped accepting the world’s rubbish for sorting and recycling</a>.</div><img src="http://static.wixstatic.com/media/78d646_5f38336701d244e09bcfe6a39652043d~mv2_d_2592_1944_s_2.jpg"/><div>So our zero waste to landfill journey is slowly morphing into a zero waste journey (in both construction and operation). As the first step on that journey we have spent the month of February stockpiling all the waste that we have created for the month. And that has been a bit of an eye-opener let me tell you. If you had asked me before we started doing this where I thought the majority of our household waste would come from I would have told you plastic milk bottles. However this is in fact not the case. We actually have not used as many milk bottles in the month as I thought. But Ezibuy catalogues! Eyecrumba! They seem to arrive every second day. I never really thought about them very much before as I’d just throw them straight into the recycling bin but once I started to stockpile them! WOW! To the point that I actually rang up at the end of February and took myself off their mailing list….and I told them my reasons for doing so.</div><div>The next on the hit list. The NZ Herald. I realised that so much of the paper everyday is stuff that I don’t actually read. I’m mostly only interested in the headlines and business section, but every day comes with some other supplement that I never touch, and some days are really bad! You have Viva, Taste, Time Out, Driven, Homes, Travel all sorts of stuff. And how much time, paper, ink, petrol does it take to get it to my house where I just throw it straight in the bin. Better to not ask for it in the first place I think in hindsight. So thus ends our subscription to the NZ Herald. We’ll read it online from now on.</div><div>Then we head off into the land on meat and meat packaging. We send all of that to landfill and I was very surprised about how many empty meat packets we throw out each week as we don’t eat meet every day. So a new habit will now be to not purchase pre-packaged meet at the supermarket. Instead we will be off to the butcher in Howick (our local Beachlands butcher closed down last year and was replaced by a pre-packaged Meat Direct place) with my own containers to get my meat without packaging!</div><img src="http://static.wixstatic.com/media/78d646_9b2f1c8344b146a2a84cac9c27defd43~mv2_d_2592_1944_s_2.jpg"/><div>Our little experiment of documenting our waste for one month really shone a light on our consumption practises and we were really surprised at what it told us. It is so easy to just throw your waste in either the bin or the recycling bin (especially the recycling bin) and think that it is all OK. Out of site out of mind. But what happens to it from that point, does recycling actually get recycled, if so where does it get recycling (in NZ or overseas) and in reality is it upcycled, recycled at the same level or down-cycled. I don’t think that a lot of us realise that our plastic milk bottles don’t go to be recycled into more milk bottles. No! All our milk bottles are from virgin plastic (i.e. oil). The bottles that we recycle end up getting down cycled and then eventually end up in landfill.</div><div>The best plastic is the plastic that you never buy in the first place!</div><div>The below photos show all the single use 'light weight' plastics that we used this month. I generally bag these up and take them to Countdown and put them in the recycling bin. But now that China is no longer taking that waste, what is going to happen to it? Can we recycle it in NZ. If so what kind of products does it get made into? These are questions for me to find the answers to in the coming months. But regardless of the answers I am going to try and eliminate all of this plastic waste from our lifestyle. </div><img src="http://static.wixstatic.com/media/78d646_0930fbb5560149bcb7839a417a9903ce~mv2_d_2592_1944_s_2.jpg"/><img src="http://static.wixstatic.com/media/78d646_e7e1f782fb2849eebfe89687ba3f9e7e~mv2_d_2592_1944_s_2.jpg"/></div>]]></content:encoded></item><item><title>WUFI</title><description><![CDATA[So what is WUFI? WUFI is the acronym for "Wärme- und Feuchte instationär" ("Heat and Moisture transient"). WUFI is designed to calculate the simultaneous heat and moisture transport in one-dimensional multi-layered building components!YIKES!!!!! How many of your stopped reading at that point! Hands up. I won’t hold it against you :) Ok, so here is what happened in laymans terms.As you all now the Living House is targeting Passive House certification. Our awesome Passive House consultant, Elrond<img src="http://static.wixstatic.com/media/78d646_1efb1463aa7e430a921b5dcf9e592fc5%7Emv2.png/v1/fill/w_629%2Ch_474/78d646_1efb1463aa7e430a921b5dcf9e592fc5%7Emv2.png"/>]]></description><dc:creator>Rochelle Payne</dc:creator><link>https://www.livinghouse.org.nz/single-post/2018/03/01/WUFI</link><guid>https://www.livinghouse.org.nz/single-post/2018/03/01/WUFI</guid><pubDate>Thu, 01 Mar 2018 05:25:02 +0000</pubDate><content:encoded><![CDATA[<div><div>So what is WUFI? WUFI is the acronym for &quot;Wärme- und Feuchte instationär&quot; (&quot;Heat and Moisture transient&quot;). WUFI is designed to calculate the simultaneous heat and moisture transport in one-dimensional multi-layered building components!</div><img src="http://static.wixstatic.com/media/78d646_1efb1463aa7e430a921b5dcf9e592fc5~mv2.png"/><div>YIKES!!!!! How many of your stopped reading at that point! Hands up. I won’t hold it against you :) Ok, so here is what happened in laymans terms.</div><div>As you all now the Living House is targeting Passive House certification. Our awesome Passive House consultant, Elrond Burrell from VIA Architecture (he is one of our supporters so I suggest that you check him out, and then get in touch with him straight away as he is a gem!) has been working away really hard on pulling together everything that is needed for our pre-construction review by the also awesome Passive House certifier that we are using, Jason Quinn from Sustainable Engineering (used for work for NASA! – gives you confidence really doesn’t it!)</div><div>Well once all our designs officially got into the hands of Jason, he started asking a few questions about our rammed earth walls on the first floor, and if there was any potential for moisture to be absorbed by the rammed earth walls which are currently proposed to be strapped and lined with timber and plywood. The only way to prove that moisture isn’t going to be a problem with these walls is by undertaking a WUFI analysis.</div><div>Enter stage right Denise from eZED Ltd. With the generous support of Pro Clima we have been able to engage the services of Denise from eZED who undertook a WUFI analysis for us. In order to analyse, Denise had to accurately build up the composition of our wall structure (right down to the level of information around what is the density of the aggregate that we are using in the rammed earth mix) in the state of the art WUFI software. This software calculates the water movements through each material, based on its material properties and external factors, such as climate (temperature, sun and rain) on the outside and temperature and moisture generated on the inside.</div><div>Here are our ‘at risk’ walls. The graphs below with the green and blue lines and areas show the moisture analysis. Relative humidity is in green and water content is in blue.</div><img src="http://static.wixstatic.com/media/78d646_4595fdc66e2d40f2bc1af48333600b68~mv2.png"/><div>Unfortunately the results are at this time inconclusive. Poor old Denise has not had quite enough information from us on the finished Rammed Earth product and the results depend on material data which is yet to be determined.</div><div>So, at the moment we are in a small world of ‘we don’t know’ which is not where you would normally be with WUFI if you were using a standard wall construction. But since we appear to be one of the first to do rammed earth in this manner in NZ, we are breaking new ground…..again.</div><div>The outcomes of the current WUFI are that the biggest concerns centre around the construction type being similar to a Stone/Concrete strap and line, which often suffers from a cold surface temperature that allows humidity to condense as moisture. A possible solution for us is to create a break between the timber strapping and the rammed earth walls. At the moment our internal strapping is designed to be 140mm thick, so we could reduce that to 90mm and form our internal walls as freestanding walls with a layer of continuous insulation against the rammed earth, which should stop any moisture or humidity hitting a cold timber surface. However we also need to make sure that we stop the rammed earth absorbing moisture wherever possible as the rammed earth has structural reinforcing in it (and while it is galvanised to protect it from moisture) we’d rather not have the moisture getting in in the first place). So, to do that we are going to be adding a special, water repelling resin, to the rammed earth mixture. This will mean that any rain will bead on the surface of the rammed earth and run off, rather than being absorbed by it. </div><div>A potential solution provided by Denise:</div><div>To mitigate the risk for interstitial moisture problems we could treat the rammed earth as a type “cladding” and separate it from the Insulation layer by placing a wall underlay to the outside of the internal framing over a small cavity.</div><img src="http://static.wixstatic.com/media/78d646_b26fc7da89c14abb9b28c4f3746961d5~mv2.png"/><img src="http://static.wixstatic.com/media/78d646_4a1cba09616d4d3b822a505719ba3bd6~mv2.png"/></div>]]></content:encoded></item><item><title>The Saga of the Living House Basement Roof and The Living Building Challenge Red List</title><description><![CDATA[The Building Consent drawings for the Living House call for the use of either Tray Dec or Dimond Flatdeck. Both great construction systems that would allow us to easily pour a concrete roof to the basement (which is also the floor of the garage)........except for the fact that these products are manufactured from galvanised steel and that steel has a protective coating added to it which uses Chromium V! – which is on the Living Building Challenge Red List. It turns out that it is possible to<img src="http://static.wixstatic.com/media/78d646_a42ab1797a4f41ee9588dd5fb111c7c6%7Emv2.jpg/v1/fill/w_289%2Ch_289/78d646_a42ab1797a4f41ee9588dd5fb111c7c6%7Emv2.jpg"/>]]></description><dc:creator>Rochelle Payne</dc:creator><link>https://www.livinghouse.org.nz/single-post/2018/02/03/The-Saga-of-the-Living-House-Basement-Roof-and-The-Living-Building-Challenge-Red-List</link><guid>https://www.livinghouse.org.nz/single-post/2018/02/03/The-Saga-of-the-Living-House-Basement-Roof-and-The-Living-Building-Challenge-Red-List</guid><pubDate>Fri, 02 Feb 2018 19:34:44 +0000</pubDate><content:encoded><![CDATA[<div><div>The Building Consent drawings for the Living House call for the use of either Tray Dec or Dimond Flatdeck. Both great construction systems that would allow us to easily pour a concrete roof to the basement (which is also the floor of the garage)........except for the fact that these products are manufactured from galvanised steel and that steel has a protective coating added to it which uses Chromium V! – which is on the Living Building Challenge Red List. </div><img src="http://static.wixstatic.com/media/78d646_a42ab1797a4f41ee9588dd5fb111c7c6~mv2.jpg"/><div>It turns out that it is possible to manufacture the steel that the Tray Dec and Dimond use to form the products without the Chromium VI protective coating (they just apply an oil instead) however this oil doesn't protect the product as well during storage and if it gets wet it would form a type of white coating (I guess a type of oxidation). Apparently it doesn't affect it structurally but just doesn't look very nice. This is all still fine and we can easily use this product, except for the fact that the steel mill will only take a minimum order of 4 ton which is about 400 times that amount that we require for the Living House. And we can't really ask either Dimond or Tray Dec to place this minimum order for us as they would then end up storing a whole lot of extra product, that isn't their normal stock, that wouldn't store as well since it doesn't have the normal protective coating on it. </div><div>Therefore we could not use Tray Dec or Dimond Flatdeck for the roof of the basement and had to spend around three to four months scrambling around trying to find a cost viable alternative! The options that were on the table were:</div><div>Rib and timber infill (structural engineers first choice)Formwork and a solid slab (not pretty to put the formwork up on site!)Precast perhaps</div><div>Somewhat surprisingly we actually ended up going down none of those routes and have instead opted for a suspended timber floor to the basement. We have done this for a large number of reasons but probably the two strongest are:</div><div>To reduce the amount of concrete that use in the Living house. To be clear we have nothing against concrete and we think it is a beautiful material plays a vital part in the construction industry. However apparently the world is starting to run out of sand ( https://www.smithsonianmag.com/science-nature/world-facing-global-sand-crisis-180964815/ ) and we want to be good global citizens and play our part by only using resources that we have to use. And in this instance there ended up being an alternative to concrete that we could use – so we have.Construction detailing. As you know we are building the Living House ourselves and since building is not actually our trade we were concerned about how we were going to manage the more complicated detailing and formwork that we would have had to use with all of the concrete options. The timber detailing is much more straightforward and we feel like we will be able to manage it ourselves onsite.</div><img src="http://static.wixstatic.com/media/78d646_e50c7bae491348a2a1fe0961526980dd~mv2.jpg"/><img src="http://static.wixstatic.com/media/78d646_3e1bbecbd8bf46baa1a0f2821adeea78~mv2.jpg"/><img src="http://static.wixstatic.com/media/78d646_83e4ec9617354ac78ed66598145ff4fd~mv2.jpg"/><div>So we merrily placed an order for HYNEBeams from our wonderful IBuilt supporters as well as some 135 x 45mm topping timber from our other wonderful supporters ABODO. I mention these two suppliers because as you can see being Red List compliant is very important to us, and both of these companies can provide Red List compliant timber products and there are not many companies out there that can do this! Most trip up at the timber treatment step tending to use the common CCA (Chromated copper arsenate) timber treatment. However Arsenic is on the Red List so that is a no-go for us.</div><div>However the Living Future Institute's Living Building Challenge enjoys throwing up challenges at every possible turn! We thought we were all good as the HYNE beams were Red List free and FSC. HOWEVER..... it turns out that the FSC certification for the HYNE beams is only for the forest where the pine is harvested and that the chain of custody is broken when that pine goes to the mill and glulam plant as they hold PEFC certification (which the LBC doesn't recognise).</div><div>What a disaster. We only found this out when we were paying the invoice for the deposit for these timbers and noticed PEFC notated on the invoice. Cue immediate and frantic questions to Ibuilt and Hyne Timber as well as an official dialogue post to the Living Building Challenge by our wonderful sustainability consultants The Building Excellence Group to find out if this mix of FSC and PEFC would be acceptable.</div><div>THEN the Red List struck again! When originally researching whether or not we could use the Hyne beams we found that they used a hardener that contains formaldehyde (CAS #50-00-0). Now for those of you that do not know formaldehyde is on the Red List. However there was also an answer to an official dialogue question that said:</div><div> &quot;We understand that there are certain life-cycle and design benefits to using glulams over other available structural solutions (e.g. steel or concrete), despite the dependency on phenol resorcinol formaldehyde. Due to current market realities – there are no glulams made without formaldehyde available today – the product may be used. This exception only applies to glulams made using phenol formaldehyde; no glulam products made with urea formaldehyde are acceptable....... &quot;</div><div>We read this that as long as the products didn't contain urea formaldehyde then we could use them. HOWEVER after the issue with the PEFC we thought that perhaps we should really look into this a little further and I found that the official exemption states:</div><div>&quot;I10-E10 2/2008 Added phenol formeldehyde is allowed in composite structural members such as glulam beams. &quot; Hmmm, not quite the same as my interpretations above. So it looked as though perhaps our preferred glulam beams had 2 issues that we needed to get resolved!</div><div>Thankfully we received confirmation from the Living Future Institute just before Christmas 2017 that we could go ahead and use the HYNE beams, even though they were a mix of FSC and PEFC and contained formaldehyde as all other glulam beams on the market that have the strength that we require also contain this red list substance.</div><div>However the Red List wasn’t finished with us yet! When trying to research the joist hangers that we would require to hold up the HYNEbeams I discovered that all of these hangers suffered from the same problem as the Tray Dec or Dimond Flatdeck.</div><img src="http://static.wixstatic.com/media/78d646_727dd84ae0ce4916a2032bafaabed488~mv2.jpg"/><div>Basically all galvinised steel in New Zealand is pretty much produced by either NZ Steel or Pacific Steel. Mitek who makes a lot of these joist hangers just purchases gavlanised steel coils from Fletcher Steel and shapes them and punches holes in them. Fletcher Steel don’t do much but just purchase 1.55mm g300 Z2752 steel coils from NZ Steel and mechanically shape it, which they then sell to Mitek. NZ Steel produces and galvanises the steel and they apply that lovely Chromium VI protective coating. So we thought that we couldn’t use joist hangers. This then required us to go back to the structural engineers and come up with another way to put the structure together for the basement roof. Quite a simple solution in the end which was to drop the timber stringer that the joist hangers were going to attach to and instead of using joist hangers we are just going to sit the HYNEbeams on the stringer and skew nail them in place. So we managed to eliminate an entire material! And we then found out that hangers/bolts/nails etc are all exempt from Red List compliance due to market limitations!!!! So all of that design change for nothing – however it has saved us some money, so not really for nothing.</div><div>You would think we would now be done. However the Red List still had another surprise for us on the basement roof! This time it was around the timber stringer. Joel headed off to the local Mitre 10 to pick up the required untreated, FSC, SG8 190 x 45 timber for this stringer, only to find out that Mitre 10 don’t have FSC timber in stock. A call to Bunnings determined that they only stock SG8 in 190 x 25mm (which may or may not have been FSC) and would be treated with CCA (which is not compliant with the red list). ITM don’t stock any FSC timber and we didn’t even bother trying to call Carters. Instead we called our wonderful supporters at Ibuilt who had some smaller HYNE beams in stock so those ended up being used as the stringer as we already knew that they were Red List compliant and FSC/PEFC acceptable!</div><img src="http://static.wixstatic.com/media/78d646_ae37f7d477cc41f58255928bdde6eb53~mv2_d_2592_1944_s_2.jpg"/></div>]]></content:encoded></item><item><title>The Living House Biophilia Workshop (at the new Pro Clima HUB)</title><description><![CDATA[Yesterday the Pro Clima Hub hosted the Living House for our Biophilia Workshop.As a requirement of the Living Building Challenge the project must be designed to include elements that nuture the innate human/nature connection.To comply each project team must engage in a minimum one all-day exploration of the biophilic design potential for the project. The exploration must results in a biophilic framework and plan for the project that outlines the following:1) how the project will be transformed<img src="http://static.wixstatic.com/media/78d646_c0c064fdd12345f5899eeae3f123e3a4%7Emv2_d_3264_1836_s_2.jpg/v1/fill/w_629%2Ch_354/78d646_c0c064fdd12345f5899eeae3f123e3a4%7Emv2_d_3264_1836_s_2.jpg"/>]]></description><link>https://www.livinghouse.org.nz/single-post/2017/11/26/The-Living-House-Biophilia-Workshop-at-the-new-Pro-Clima-HUB</link><guid>https://www.livinghouse.org.nz/single-post/2017/11/26/The-Living-House-Biophilia-Workshop-at-the-new-Pro-Clima-HUB</guid><pubDate>Sat, 25 Nov 2017 18:17:03 +0000</pubDate><content:encoded><![CDATA[<div><div>Yesterday the Pro Clima Hub hosted the Living House for our Biophilia Workshop.</div><img src="http://static.wixstatic.com/media/78d646_c0c064fdd12345f5899eeae3f123e3a4~mv2_d_3264_1836_s_2.jpg"/><div>As a requirement of the Living Building Challenge the project must be designed to include elements that nuture the innate human/nature connection.</div><img src="http://static.wixstatic.com/media/78d646_284f7bdb384141c8a1ac7712e0c26f2c~mv2.jpg"/><div>To comply each project team must engage in a minimum one all-day exploration of the biophilic design potential for the project. The exploration must results in a biophilic framework and plan for the project that outlines the following:</div><div>1) how the project will be transformed by deliberately incorporating nature through environmental features, light and space and natural shapes and forms</div><div>2) how the project will be transformed by deliberately incorporating nature's patterns through natural patterns and processes and evolved human nature relationships. </div><div>3) how the project will be uniquely connected to the place, climate and culture through place based relationships</div><div>the provision of sufficient and frequent human nature interactions in both the interior and exterior of the project to connect the majority of occupants with nature directly. </div><img src="http://static.wixstatic.com/media/78d646_926e7b5281d2477e846326bcded8f88a~mv2.jpg"/><div>This is big stuff and we were a little lost and bewildered on how to address this. Luckily The most fantastic Yoshimi and Jon Brett (from the Tanglewood LBC project), in conjunction with Sally Freebain, facilitated this workshop for us using the Tetra Map process. This was a total voyage of exploration for us as we have never really been exposed to Biophilic Design and certainly had had no exposure to Tetra Map. </div><div>What a wonderful day! Our supporters came out in force to support us through this workshop and provided some wonderful ideas and insights into how we could improve the design of the Living House to better connect with nature. </div><div>Here are some of the idea and inspirations outputs from the day that we will likely be implementing in the design to meet the above requirements (in due course we will write out proper plan and will post it on this website):</div><div>1) Replace downpipes with rain chains and natural collectors</div><img src="http://static.wixstatic.com/media/78d646_5057249625724424b1a45a66f818fbc2~mv2.jpg"/><img src="http://static.wixstatic.com/media/78d646_af9c0c4bf56644cf995d97efd3b83499~mv2.jpg"/><div> 2) Add a 'coat check' to the entry of the Living House as a reminder that they are entering a Passive House and therefore will not require all the hats, jackets and scarfs that they are wearing.</div><img src="http://static.wixstatic.com/media/78d646_e5b7090820c44d04ac9deaacf68075e5~mv2.jpg"/><div>3) Break up the current rather severe and straight rammed earth frontage with natural materials like:</div><div>a)timber shading screens to the north facing windows</div><img src="http://static.wixstatic.com/media/78d646_9ba090e52ae24d458724af8048228b6e~mv2.jpg"/><div>b) leaning out rammed earth walls</div><div>4) Better use of transition spaces</div><div>Turn the entry and stairs into a 'hero' by potentially creating leaning out rammed earth walls, a light well for the st</div><img src="http://static.wixstatic.com/media/78d646_212697f56c31453cb3b804385436b799~mv2.jpg"/><div>airs</div></div>]]></content:encoded></item><item><title>Is the Living House a Sustainable Fraud??</title><description><![CDATA[When we received the full structural engineering design for the Living House we were mildly HORRIFIED at the amount of reinforcing and concrete that our supposedly uber sustainable house required. We could not reconcile all of this with the fact that we are trying to have a light footprint on the planet and we are wondering if we have made a big mistake. However to be a little bit fair to us we are on a constrained site and therefore need to go 2 storeys to accommodate the ETS beds. And to be<img src="http://static.wixstatic.com/media/78d646_2b0e7693b0b548f0bc3d320a8d8e8066%7Emv2.jpg/v1/fill/w_500%2Ch_333/78d646_2b0e7693b0b548f0bc3d320a8d8e8066%7Emv2.jpg"/>]]></description><dc:creator>Rochelle Payne</dc:creator><link>https://www.livinghouse.org.nz/single-post/2017/08/17/Is-the-Living-House-a-Sustainable-Fraudpart-2</link><guid>https://www.livinghouse.org.nz/single-post/2017/08/17/Is-the-Living-House-a-Sustainable-Fraudpart-2</guid><pubDate>Thu, 17 Aug 2017 03:24:24 +0000</pubDate><content:encoded><![CDATA[<div><div>When we received the full structural engineering design for the Living House we were mildly HORRIFIED at the amount of reinforcing and concrete that our supposedly uber sustainable house required. </div><div>We could not reconcile all of this with the fact that we are trying to have a light footprint on the planet and we are wondering if we have made a big mistake. However to be a little bit fair to us we are on a constrained site and therefore need to go 2 storeys to accommodate the ETS beds. And to be even more honest we are in love with the look and feel of rammed earth and prefer it massively to the other types of earthen construction. But we are still horrified. We did have one brilliant idea for eliminating some concrete, Going back to the original idea for an earthen floor on the ground floor of the house (with the exception of the garage).</div><div>What we have found is that the choice of materials for a project is a massively complex issue that needs careful consideration. In all of my experience in construction and sustainability I have yet to find a way to definitively compare the selection of different materials over the entire lifecycle of a house to determine what is the most sustainable choice. A lot of LCA tools will look at what they call the life cycle analysis of a project, however I have yet to find one that takes into account things like durability, maintenance and resilience. For example if we build out of rammed earth, that requires increased reinforcing and concrete, we will create a house that requires no exterior maintenance. If we had constructed the Living House out of cedar timber weatherboards of even lightweight straw bale, we would have created a house that would require yearly maintenance in terms of painting and/or re-plastering. It is not clear to me how this ongoing maintenance load is accounted for in many LCA tools and where the materials and labour (mileage etc) is added into the mix. In addition rammed earth houses can stand for hundreds of years without requiring any maintenance. Can the same be said for a timber house that is built to last only 50 years? Where is that taken into account in the LCA tools. Therefore have we created a more sustainable house or not? We need more upfront materials like concrete and reinforcing, however we will require nothing else ever again. In the long term what is better?</div><img src="http://static.wixstatic.com/media/78d646_2b0e7693b0b548f0bc3d320a8d8e8066~mv2.jpg"/><div>One argument for timber is that it is carbon neutral so having to replace it ever 50 years or so is ok. But does that account for the oil that is required for felling, trucking, milling, transport to site etc. As well as the paint or stains/sealants.</div><img src="http://static.wixstatic.com/media/78d646_0e93faea4ca944478c82961f5a234ec5~mv2_d_2000_1203_s_2.jpg"/><div>All I know is that it is a really complex issue and I don’t think that there is yet any definitive way to compare different options (but if someone knows of one do let me know as I am very interested!)</div><div>However what I do know is that the companies that work in the space of the concrete and cement industry are working very hard to lessen their footprint on the planet. Even though I work full time in the sustainability industry I was surprised to find out all of the initiatives that Firth and Golden Bay Cement have in place to make their products as sustainable as possible.</div><img src="http://static.wixstatic.com/media/78d646_b5a32dd802414564ae3571f6d8fbdaef~mv2.jpg"/><div>The cement that is used in Firth’s concrete is from Golden Bay Cement (GBC) and is Declare labelled as red list free. GBC cement is NZ manufactured ,not imported as all other cement in NZ is. GBC use 30% alternative fuels from the timber industry which would have ended up in landfill, recently receiving a grant to gear up to divert some 3 million used tyres from landfill, providing a further increase in alternative fuel use – some 15% . The advanced GBC cement plant operates at such high temps that this is an environmentally friendly disposal option for tyres.</div><div> GBC are due to release their LCA findings in the form of an EPD this month – the carbon emission results are far better than the default values currently used in building LCA models, which are based onoverseas data.</div><div>Golden Bay Cement tyre fuel funding article:<a href="http://www.fletcherbuilding.com/who-we-are/news/fletcher-building-and-government-partner-to-invest-in-sustainability-at-golden-bay-cements-portland-plant/">http://www.fletcherbuilding.com/who-we-are/news/fletcher-building-and-government-partner-to-invest-in-sustainability-at-golden-bay-cements-portland-plant/</a></div><div>Golden Bay Cement Declare Label:<a href="https://access.living-future.org/golden-bay-cement-eversure%E2%84%A2-gp-and-everfast%E2%84%A2-he-cement">https://access.living-future.org/golden-bay-cement-eversure%E2%84%A2-gp-and-everfast%E2%84%A2-he-cement</a></div><div>As for Firth, Most of the 80 plants nationally recycle water and the wet concrete that is returned in trucks is recycled – either into moulds to provide barriers in Landscape yards or some of the larger plants have recycle machines to separate the aggregates and sands from the slurry to reuse in the next batch of concrete.</div><div>Firth manufacture from locally sourced raw materials to minimise cartage movement, GPS and monitor their trucks to maximise energy, fuel and time efficiency. To further look after their resources they widely educate the market on design and use of masonry and concrete for durability and longevity, Thermal gain, Fire ratings and recycling – cradle to grave + reuse.”</div><div>I originally asked if perhaps we could consider replacing the cement with Flyash. However Huntly power station is not burning any longer so NZ does not have its own supply of fly ash any longer. When Huntly was operational concrete was a good place for the flyash rather than in landfill. However currently now Flyash is imported from India/China and further afield which does not make sense for environmental purposes – as well as quality of that fly ash being somewhat questionable sometimes.</div><div>So in summary this is a really complex issue and I don’t think that there is yet any definitive way to compare different house construction material options yet (but again if someone knows of one do let me know as I am very interested!)</div></div>]]></content:encoded></item></channel></rss>