Chris, Polyiso boards are indeed "recyclable" in a sense. You simply repurpose them, i.e. after you break down your yurt, you can use those very same panels in another construction project, like a home, a toolshed, or a chicken coop perhaps, whatever you can think of. You can even sell it to someone else after you're done with it (I did).
Many people get stuck in the "it has to be shreddable" thinking mode, thinking that in order to be recyclable, there would need to be some kind of recycling service out there that will somehow pulverize and repurpose the transformed materials. That's not the case. The polyiso boards are worth more intact than they are shredded or pulverized. I was going to use my H13 eventually for insulating a chicken coop here at my home that we want to build. I would've done that but, someone ended up buying my H13 from me to use at Burning Man this year (I can't go). They said they intend to reuse it many times. Of course, their idea is to reuse it as a yurt several times. Though there's no reason it can't eventually end up being part of a permanent construction project some day. If you do choose to go with polyiso, taking into account your temperature extremes and the length of time your yurt will be used, I would recommend at the very least 1.5" thick panels. I used 1" thick which was fine for BM, and/or for any short term stay. For you, definitely 1.5" at the very least. Of course over there they might get measured in centimeters, though since they're produced in the USA, they may come in inches anyway. I used the alternative H13 design which uses the Camp Danger Hinge technique for taping the panels together (instead of having to mitre the panels). I can't honestly say whether the bidirectional filament tape would suffice for your purposes long-term with rain, cold, UV, heat etc., but my gut says it's better to err on the safe side and go with Vinay's suggestions, and use more time-consuming, solid measures to hold your panels together. And if you can't get a hold of polyiso over there, just go with plywood, Vinay has a video for this too: http://vinay.howtolivewiki.com/blog/other/plywood-hexayurt-construction-details-1573 Suerte, -Alejandro 2012/3/13 Lucas González <[email protected]> > Hexayurts in Spain. Hadn't seen that on the email subject! > > >two week summer camp where we will have a number of workshops etc > >and I'm planning on moving to the site for a few months to get the site > ready. > >quick to build which I can live in for a while. > >sustainable (or least recyclable) materials > >durable enough to last a few years and be usable all year around - which > I think means it needs to be insulated. > >summer (30 degree centigrade plus), winter (down to -3 in February > >fairly dry, with most of the 750mm of annual rainfall happening in winter > and days of 30mm+ rain not uncommon. > > I've never built a real size hexayurt, just small models. > http://imagina-canarias.blogspot.com/search?q=hexayurt > And helped with documentation. > http://www.appropedia.org/Hexayurt_H13_Plywood > See if some of that helps? > > Maybe the "ferro" part can be cloth? > http://www.ferrocement.com/bioFiber/y5-1x2/biofiber_y5.1.es.html > > My experience with supplies in the Canaries is not that good. > Managed to find marine plywood, but not the poli-iso panels. > Maybe I don't know what to look for, or where. So if you find them, I'd > love to know the Spanish name for it. > > Gracias. > > Lucas > > > 2012/3/13 Vinay Gupta (Hexayurt Shelter Project) <[email protected]> > > Ah, yes, I've been reading your web site with some interest! >> >> Could I persuade you to permanence? >> >> We *think* that polyiso + ferrocement is the way to go - extremely >> durable, multi-decade buildings for very little money, fully insulated, >> long-term waterproof, rotentproof, sun-proof, bug-proof etc. so rather than >> building a temporary thing and recycling it, you build a permanent thing >> which is *very* light on materials (the cement is only 1cm thick or so!) >> while we evolve a good soy-based insulation foam (it's coming, lots of >> people are working on it.) >> >> Have you seen the "hexayurt for haiti" doc which describes how to lap the >> pieces for waterproofness, and seen Dylan Toymaker's insulated panel H13? >> >> Vinay >> >> On Tue, Mar 13, 2012 at 3:41 AM, Christopher Fraser <[email protected]>wrote: >> >>> Hello, >>> >>> I'm part of a group developing an permaculture / Open Source Ecology >>> project in Extremadura, Spain. >>> >>> http://openeland.org/en/ >>> >>> We're organising a two week summer camp where we will have a number of >>> workshops etc and I'm planning on moving to the site for a few months to >>> get the site ready. >>> >>> So, I'm wanting to build a structure which will be quick to build which >>> I can live in for a while. It it works out I may be some more for the camp. >>> I want to use sustainable (or least recyclable) materials as much as >>> possible and want to structure to be durable enough to last a few years and >>> be usable all year around - which I think means it needs to be insulated. >>> >>> The site is fairly hot during summer (30 degree centigrade plus), but >>> gets cold over the winter (down to -3 in February when we were camping >>> there!). It's general fairly dry, with most of the 750mm of annual rainfall >>> happening in winter and days of 30mm+ rain not uncommon. >>> >>> I've also been looking at small building designs like these: >>> >>> http://www.countryplans.com/**jshow.com/y2k/listings/3.html<http://www.countryplans.com/jshow.com/y2k/listings/3.html> >>> http://www.simplesolarhomes.**com/steps-for-building-a-** >>> small-solar-home/<http://www.simplesolarhomes.com/steps-for-building-a-small-solar-home/> >>> >>> I'm also thinking about a Hexyurt, but concerned about getting the >>> weather proofing and insulation right. >>> >>> One options is to build insulated panels for the roof and walls. Help, >>> wood, or cellulose is probably the preferred insulation to be sandwitched >>> between the OSB on the outside and some other interior board (probably more >>> OSB), but rockwool is currently about 10% the cost here at the moment (and >>> is apparently partially made from recycled materials and itself recyclable). >>> >>> I can visualise how the panel construction for the walls, with vertical >>> 60 degree wedges between the panels sealed with silicone. I'm not >>> completely sure how the roof would work and would be interested to hear >>> ideas. >>> >>> One thought is that a good quality of seal between the top of the walls >>> and the roof could be achieved by a layer of foam that compresses when the >>> roof is put on. >>> >>> My main concern is water getting in the roof seams. I was thinking I >>> could cover the whole structure in tar paper, but I don't seem to be able >>> to source it in the UK or Spain. The plastic membrane equivalents are only >>> UV stable for a few months. >>> >>> My next idea is the membrane could go under the OSB. It would be quite a >>> complicated construction but the only way I can see it working is there's a >>> strip of plastic under each edge seam, which is allowed to fold into a bit >>> of a valley and is secured on the inside by two pieces of batten (which >>> would also form the cavity for the insulation - will be complete pain to >>> cut and fill with rockwool type insulation). >>> >>> I'm not sure if a H13 form roof construction would make this easier by >>> only having two angled roof edges or harder by introducing a horizontal >>> seam. >>> >>> Compressible foam could also be used between the roof triangles to >>> improve air tightness. I am thinking about passive heating and cooling >>> ventilation like this: >>> >>> http://www.simplesolarhomes.**com/category/passive-cooling-** >>> and-heating/<http://www.simplesolarhomes.com/category/passive-cooling-and-heating/> >>> >>> Anyway, I'm interested to hear ideas. I realise polyisocyanurate >>> insulation boards would be much more straight forward, but I am keen to >>> avoid it as it's not widely used or recycled (in Europe at least, as far as >>> I know). >>> >>> Christopher. >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "hexayurt" group. >>> To post to this group, send email to [email protected]. >>> To unsubscribe from this group, send email to hexayurt+unsubscribe@** >>> googlegroups.com <hexayurt%[email protected]>. >>> For more options, visit this group at http://groups.google.com/** >>> group/hexayurt?hl=en <http://groups.google.com/group/hexayurt?hl=en>. >>> >>> >> >> >> -- >> Vinay Gupta >> Free Science and Engineering in the Global Public Interest >> >> http://bit.ly/gupta_arc <http://bit.ly/gupta_arc%20>- the Gupta State >> Failure Management Archive >> http://bit.ly/gupta_ark - or see it directly on Archive.org >> >> http://hexayurt.com - free/open next generation human sheltering >> http://hexayurt.com/plan - the whole systems, big picture vision >> >> "In the midst of winter, I finally learned that there was in me an >> invincible summer" - Albert Camus >> >> Twitter/Skype/Gizmo/Gtalk/AIM: hexayurt >> UK Cell : +44 (0) 7500 895568 / USA VOIP (+1) 775-743-1851 >> >> -- >> You received this message because you are subscribed to the Google Groups >> "hexayurt" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]. >> For more options, visit this group at >> http://groups.google.com/group/hexayurt?hl=en. >> > > -- > You received this message because you are subscribed to the Google Groups > "hexayurt" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/hexayurt?hl=en. > -- -Alejandro Moreno S. GreenMBA, Dominican University of California Cell (415) 578-8731 LinkedIn <http://www.linkedin.com/in/alejandromorenos> -- You received this message because you are subscribed to the Google Groups "hexayurt" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/hexayurt?hl=en.
