Building Products: Fire-beating buffer insulation spray from the TOH Top 100 Best New Home Products 2013 « »

Building Products: Fire-Beating Buffer

Classic Max open-cell foam, by Icynene
There's no better insulation for attics than spray foam, but code requires it to be covered by an ignition barrier—drywall—as protection from fire. Not this one. Its fire retardants let you skip the expense of the barrier after you insulate. Computer simulation tests confirm that in an unvented attic this open-cell foam actually smothers flames in less than 60 seconds. Rated at R-3.7 per inch.
About $3.40 per square foot;
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