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I applied rigid form insulation to the inside surface of the existing sheetrock in a bedroom

Prior to placing the insulation, I glued heavy fabric to the front to give it an aesthetic balance with the bedroom.

My concern: Will the form board out-gas causing harm to the occupants?

Asked by Robert Mela
Posted Jul 11, 2014 8:04 AM ET
Edited Jul 11, 2014 8:23 AM ET

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2 Answers

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1.

Robert,
Q. "Will the form board out-gas causing harm to the occupants?"

A. Probably not, but the rigid foam is definitely a fire hazard and a code violation. Building codes require rigid foam to be protected on the interior by a so-called thermal barrier equivalent in performance to 1/2-inch drywall.

In almost all cases, the easiest material to use for this purpose is 1/2-inch drywall, so that is what you should install to cover your rigid foam.

Answered by Martin Holladay, GBA Advisor
Posted Jul 11, 2014 8:22 AM ET

2.

Oh! I see your point and much appreciated. I feel compeled to remove from the one wall since my 17 year old occupies the bedroom. Thanks for the quick response.

Answered by Robert Mela
Posted Jul 11, 2014 10:59 AM ET
Edited Jul 11, 2014 10:59 AM ET.

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