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Can I use EPS foam for vented ceiling?

BubTheBuilder | Posted in Green Building Techniques on

Recently bought a house with room above trusses that were not finished. I am now finishing them and plan to do a vented ceiling as some of the ceiling is vaulted and shares it’s framing with the roof. I plan on doing continuous vents from the soffit to The ridge. To make the vents and insulate Can I use EPS foam in a “stack of pancakes” method Inside the entire rafter cavity or should I switch to mineral wool before the Sheetrock? Also, would air barrier/vapor retarder such as MemBrain be Required?

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  1. GBA Editor
    Brian Pontolilo | | #1

    Hi user-7620088 (It would be great to get your real name).

    I suggest that you start with this article: How to Build an Insulated Cathedral Ceiling.

    I believe it will answer your questions and give you many options to consider.

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