Spray Foam Needs A Firebarrier? - Insulation - DIY Chatroom Home Improvement Forum

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Old 10-27-2014, 01:03 PM   #1
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Spray foam needs a firebarrier?

I thought i was all set with beginning to apply rigid board and spray foam to insulate the basement rim joists, now i hear you have to have a barrier over the exposed spray foam? anyone know what this is?
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Old 10-27-2014, 01:55 PM   #2
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No true when it comes to ribbon boards.

Most froth paks have a fire barrier incorporated into the foam. If you are concerned, cover the exposed foam with fiberglass/roxul. It will only add to the performance.
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