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December 11, 2009
Where to Buy Rigid Foam?
I'm at my wits end on where to buy fire retardant rigid foam insulation in NYC. I need it to be fire retardant because I don't want to put a layer of drywall over it (I need those precious inches). I'm actually putting a built-in bookshelf right over the top of it, which will not provide the same fire retardation as the drywall. I only need 5 sheets. I tried to special order via Home Depot & Lowes, with no luck.
Any body know of a source? Specifically I was interested in Thermax insulation (by Dow) but really, any fire retardant stuff will do.
Comments
You're conflating fire retardant with fire rated.
Fire retardant insulation would either not contribute, or contribute very slowly, to a fire.
A fire rated wall w/ gypsum wall board facing has a fire rating...1 hr, 2 hr, etc. It's the entire assembly of the wall that gets the rating, not just the g.w.b.
So if the building code requires that the wall where your shelves are going be fire rated, then you can't remove the g.w.b. and maintain the rating with insulation.
If it's not a rated wall, and you're just concerned that the room not burst in to flame/toxic smoke with one loose spark, then that's a different story.
Posted by: jcarch at December 11, 2009 11:38 AM
jcarch
Thanks for the info. I believe it's a fire rated wall.
Posted by: Frudo at December 11, 2009 1:22 PM
I don't think you are going to find any foam insulation that will replace GWB in a fire rated assembly and maintain the rating. I could be wrong, but I really doubt it.
Posted by: bugleg at December 11, 2009 2:37 PM
if it's a fire rated wall, don't mess with it under any circumstances. Just build in front of the wall, even though you lose that inch.
Posted by: jcarch at December 13, 2009 9:29 PM
have you tried Marjam? they have all manner of insulation. marjam.com
Posted by: Jimmy Legs at December 14, 2009 11:48 AM
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