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Closing gap between baffle and top plate – GreenBuildingAdvisor
- March 3, 2026
- Posted by: zbelx
- Category: Uncategorized
kickstarter | Posted in General Questions on
Really stumped by this. I have a handful of attic baffles that were installed as shown below. There is a large gap between the bottom of the baffle and the top plate. Air is moving through the soffit and through the fiberglass insulation, drastically dropping the R value.
Any tips on how to cover this gap? Would an accuvent baffle work? The space is tight to work in since its at the edge of a trey ceiling.
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Replies
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Expert Member MALCOLM TAYLOR | | #1
kickstarter,
On new construction the most common way is to continue the exterior sheathing up to the baffle before the soffits go in. On retrofits, pieces of foam board are probably your best bet.
https://www.greenbuildingadvisor.com/article/site-built-ventilation-baffles-for-roofs