Is Loctite Pro spray foam truly “fire rated” for outlet boxes?
I’m sorry if I’m asking you to bite the hand that feeds you, but I just got email marketing from GBA about Loctite Gaps & Cracks Foam which claims to be “fire rated”. However:
(1) Clicking through on the ad to the Home Depot listing, their marketing graphic which lists the applicable uses conspicuously avoids mentioning “inside electrical outlet boxes”.
(2) An article on Life Safety Services (which I can’t link to because I know from experience will cause my post to not go through) says “[F]ireblock foam found in hardware stores is actually flammable and does little to prevent the spread of a fire and smoke,” and that products should pass unmodified ASTM 814, though the Home Depot listing says the product passes ASTM 84 (which doesn’t seem to be a typo, 84 is a different kind of fire test).
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