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Poly styro foamblock insulation attic access hole

Stumped1's Avatar

Join Date: Jul 2005
Posts: 930

01-11-10, 10:55 PM   #1  
Poly styro foamblock insulation attic access hole

I used some all weather silicone to attach some of the polystyro block foam insulation to the topside of my attic access panel (2x2 wooden cover).

I want to put some weather stripping around the edge where the foam rests upon for some added insulation.

My question is can I add some heavier plywood to the top of styroblock insulation to get a better seal with the weather stripping without compromising the insulation value?


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Gunguy45's Avatar
Super Moderator

Join Date: Dec 2007
Posts: 20,666

01-12-10, 07:40 AM   #2  
Yes..it will even add a bit. You could also use less dense weatherstrip so it will compress easier..or add the plywood to the existing plywood....whatever works best for you.

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