I hate to disagree with the founder, but Thermax HD is not significantly more fire-resistant than other foam panels. I researched the subject before I bought my Thermax (non-HD) panels. The problem is, if the foil is breached anywhere (edges, windows, rips and tears, holes for wires, air, etc) the foam is vulnerable. And the foil WILL be breached. Second, the foil isn't impregnable, as I learned when I used a heat gun to remove the tape. If I remember correctly (please post corrections), Thermax HD's fire rating is 25, while some foam panels are higher. The standard is a wood panel at 100. Problem is, 25 isn't that good.
Notice I said I bought the panels anyway. I've set my HY up at BM two years. First, the HD version of Thermax isn't available anywhere. Two, having worked in 911 dispatch for the last ten years, I haven't heard of a tent fire, although I wouldn't be surprised if we've had some. Three, Black Rock City has more fire people per capita than any city or town in the US, with two or more large tankers and two or more smaller trucks on duty 24/7. While it's true our HY's aren't bomb-proof, they're good enough for the application and situation. YMMV Bill > -------- Original Message -------- > Subject: Re: [hexayurt] Re: Hexayurt/Pentayurt Hexacomb metal truss etc > From: Vinay <[email protected]> > Date: Tue, February 09, 2010 12:42 pm > To: [email protected] > > > Two words: THERMAX HD. > > Fire rated. > > Tough as nails. > > Basically the common polyiso material, but with a coke-can thickness > of metal on both sides. > > Yes, I know Dow are not being helpful, but getting this material > moving - $20 a sheet or something - is absolutely the way to put > effort and energy if people want the best possible hexayurts this > Burning Man. > > Vinay > > On Tue, Feb 9, 2010 at 7:37 PM, Brian <[email protected]> wrote: > > On Feb 9, 1:54 pm, Chris Phoenix <[email protected]> wrote: > >> Why are space blankets a no-no? > > > > Because they're made of mylar and mylar, being mainly a plastic, > > burns. > > The MSDS is here: > > http://msds.dupont.com/msds/pdfs/EN/PEN_09004a2f8002e2ed.pdf > > > > While not exactly "ka-blooey" kind of burns, it is made of polyester > > and will melt and sputter and make nasty gasses which you do not want > > to be breathing in. > > > >> > 7. What about pentayurts? Seems more stable, no? > > > > From my models, the roofs are significantly more stable, but may need > > to be secured to the ground in use if made from light materials. The > > roof of a Pentayurt *may* need additional support to bear heavier snow > > loads, but overall seems extremely solid. > > > > NB: This is all from a model 1/12 scale. I have not yet tried > > building one full sized. Yet. > > > >> > basically I suggest we take all the recent discussions on materials, > >> > supplies, designs, windows, air conditioners, guywires, etc, and work > >> > on an updated faq. > > > > Excellent idea. > > > > I'd also like to propose some additions to the FAQ/Hexayurt site on > > Appropedia: > > 1. A Consolidated "instruction sheet" in PDF format which puts all the > > info that is up there into a brief (1-3 pp) instruction sheet. > > 2. A label for completed Hexayurts similar to > > http://www.appropedia.org/File:HYPanel2pic.PNG > > but incorporating a "No Flames" sign. > > Basically, with 1 & 2, I'm thinking about a small, pictorial info > > packet which can be sent with building materials to show people how to > > build the structures they need and including a sign people can post on > > the entrance of their yurt. > > > > Just a thought. > > > > > > Brian > > > > -- > > 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. > > > > > > > > -- > Vinay Gupta > Free Science and Engineering in the Global Public Interest > > http://guptaoption.com/map - social project connection map > > http://hexayurt.com - free/open next generation human sheltering > http://hexayurt.com/plan - the whole systems, big picture vision > > http://bit.ly/flucode - please follow the Flu Code > if you are in a flu-effected area. It protects us all. > > Gizmo Project VOIP : (USA) 775-743-1851 > Skype/Gizmo/Gtalk/AIM: hexayurt > Twitter: @hexayurt http://twitter.com/hexayurt > UK Cell : +44 (0) 795 425 3533 / USA VOIP (+1) 775-743-1851 > > "If it doesn't fit, force it." > > -- > 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.
