Is Thermax HD believed to be slightly better than Hunter XCI 286? To
explain the increased cost, does it have a thicker layer of glass
fiber foil that adds strength? Or is it pretty much the same thing?

On Tue, Jul 8, 2014 at 2:26 PM, Adam Bregenzer <[email protected]> wrote:
> No problem, we found it at a couple of places, it seems readily
> available at commercial construction supply stores such as IDI <
> http://idi-insulation.com/ > and Allied <
> http://www.alliedbuilding.com/ >. Both were willing to sell over the
> counter and kept the product in stock or within less than a week
> delivery, they also were willing to deliver locally.
>
>
>
>
> On Tue, Jul 8, 2014 at 2:14 PM, Vinay Gupta (Hexayurt Shelter Project)
> <[email protected]> wrote:
>>
>> Really good to know about the Hunter XCI. Thank you for finding it, Adam and
>> Hunter.
>>
>> Could somebody add it to the wiki? Do we have any more information on the
>> supply chain, how to actually buy the stuff? Who's stocking it?
>>
>> V>
>>
>> --
>> Vinay Gupta    [email protected]   http://re.silience.com
>> Free Science and Engineering in the Global Public Interest
>> UK Cell : +44 (0)7500 895568 Twitter/Skype/Gtalk: hexayurt
>> "In the midst of winter,  I finally learned that there was
>>         in me an invincible summer" - Albert Camus
>>
>>
>> On Tue, Jun 10, 2014 at 7:40 PM, Adam Bregenzer <[email protected]> wrote:
>>>
>>> We couldn't find anyone who would sell Thermax HD unless we bought Dow's
>>> entire minimum order from them, which is 1,100 sheets.
>>>
>>> The good news is we found an alternative panel, Hunter Xci 286 (link to
>>> specs below). It has the same compressive strength and fire rating as
>>> Thermax HD and is available in smaller quantities, also it's cheaper than
>>> the quoted price for Thermax, but still relatively expensive at ~$33 /
>>> sheet. The foil on both sides is a metal foil. One side is highly
>>> reflective, the other is white.
>>>
>>>
>>> http://www.hunterxci.com/images/submittal_docs/XCI_286_lit.pdf
>>>
>>>
>>>
>>> On Jun 10, 2014 8:50 AM, "Hunter" <[email protected]> wrote:
>>>>
>>>> After months of searching we found out no one in the bay area will supply
>>>> you with thermax hd (if you were buying less than 150 sheets). We went with
>>>> Hunter xcl (?) which had similar fire properties.
>>>>
>>>> On Jun 10, 2014 8:40 AM, "Dan March" <[email protected]> wrote:
>>>>>
>>>>> Hey Tim ~  I'm also concerned with safety and look for materials that
>>>>> really do the job well.... and with a safety margin I'm comfortable with.
>>>>> The theoretical fire-related risks in a yurt with aluminized interior
>>>>> surface are scary with the lens effect and other concentrating potentials.
>>>>> Even - or in some hypothetical cases - without the foam board itself
>>>>> catching fire, just having any substantial amount of stuff burning in a
>>>>> heat-concentrating structure can get pretty intense.  Thinking of keeping
>>>>> any flames out of there, myself.  I like to cook but might have a 
>>>>> separate,
>>>>> safer place to do it... also experimenting with more serious electrical
>>>>> power and using non-flame cooking stuffs like induction - which looks
>>>>> amazing btw.
>>>>>
>>>>> It appears to me that a well-constructed H15 (which, to me, means
>>>>> mitered corners - which really improve the integrity of tape joints &
>>>>> carrying through the structural properties of the skin over the foam, and
>>>>> also means well tied down and weak points like doorways reinforced) made 
>>>>> =>
>>>>> 1.5"  thick board should stand up to an acceptably high percentage of
>>>>> possible weather on the playa.  I don't think any weight difference is
>>>>> practically significant.  I can lift a whole H15 either way if it's a
>>>>> package I can handle.
>>>>>
>>>>> I'm playing with Hexacomb board.  It's quite a bit more rigid but needs
>>>>> waterproofing and possibly some help with insulation & reflection.  It's
>>>>> pretty light and about half the price of HD.  Also playing with hybrid
>>>>> systems - board captured by EMT TinkerToy.  Hard to price that kind of 
>>>>> stuff
>>>>> though... more of an art statement you live in...
>>>>>
>>>>> Re group buys, Home Depot might special order HD in some quantity, but
>>>>> probably not necessarily a huge amount, so I'm not counting that as much 
>>>>> of
>>>>> a barrier.  Costs a bit more but like you say...   Either way, I can do 
>>>>> the
>>>>> kits and accessories.
>>>>>
>>>>> ~ Dan
>>>>>
>>>>>
>>>>> On Mon, Jun 9, 2014 at 9:24 PM, Tim <[email protected]> wrote:
>>>>>>
>>>>>> We'd be interested in a group order as well.
>>>>>>
>>>>>> I'm somewhat new to yurt building. I've read most of the guides but am
>>>>>> yet to read up on true side-by-side comparisons of each type of material 
>>>>>> for
>>>>>> playa use. I tend to "buy the best" if that makes sense, so I'm 
>>>>>> attracted to
>>>>>> HD. That said, is it actually that much better on the playa? I'm also
>>>>>> curious if it weighs much more, considering structural implications for 
>>>>>> an
>>>>>> H15. Thanks for any insight. Count us in if this *is* the "best" option 
>>>>>> for
>>>>>> the $$.
>>>>>>
>>>>>>
>>>>>> On Sunday, May 4, 2014 8:00:20 AM UTC-7, BurnerDan wrote:
>>>>>>>
>>>>>>> Safety is an issue.  All campers need to be aware of the risks -
>>>>>>> especially of fire - in sleeping in many Playa constructs, but yurts 
>>>>>>> have
>>>>>>> special dangers because of their materials and tightness.
>>>>>>>
>>>>>>> Is there any history of encouraging smoke alarm use and do any/all
>>>>>>> such units remain reliable under Playa conditions?
>>>>>>>
>>>>>>> On Saturday, February 1, 2014 6:06:59 AM UTC-8, Vinay Gupta wrote:
>>>>>>>>
>>>>>>>>
>>>>>>>> They're tougher.
>>>>>>>>
>>>>>>>> They're not that much more expensive.
>>>>>>>>
>>>>>>>> They won't catch fire.
>>>>>>>>
>>>>>>>> I feel like this would be a great year to actually fix the supply
>>>>>>>> chain issues around Thermax HD (or equivalents from other 
>>>>>>>> manufacturers), do
>>>>>>>> a container load bulk purchase, and start moving people off R-MAX etc. 
>>>>>>>> until
>>>>>>>> there's a comprehensive solution for the fire risk. I really want to 
>>>>>>>> solve
>>>>>>>> this problem before somebody gets hurt.
>>>>>>>>
>>>>>>>> http://www.appropedia.org/Hexayurt_Safety_Information
>>>>>>>>
>>>>>>>> Vinay
>>>>>>>>
>>>>>>>> --
>>>>>>>> Vinay Gupta
>>>>>>>> Free Science and Engineering in the Global Public Interest
>>>>>>>>
>>>>>>>> http://bit.ly/gupta_arc - 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
>>>>>>>>
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