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Old 5/26/07, 9:33 PM
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mcyr mcyr is offline
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Join Date: Jul 2004
Location: Winslow, ME
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Default Re: Question about exposed styrofoam insulation.

Mark, this is as easy as reading the safety label on the Product by the Manufacture and the IRC also addresses it in R314.2.3 where they state it has to be covered.

Here is a copy of the Manufactures literature that states the same.


1. The installation process for rigid foam insulation is much like that for paneling. The material is attached to the walls with furring strips that are screwed to the walls at each slot formed by the joints in the insulation.
2. This material should be covered with a 15-minute thermal barrier such as gypsum as soon as the insulation is completely installed.

The 15 minute thermal barrier is defined by the IRC as a 3/8" drywall.

Hope this helps.


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