The moisture from above they thought comes from rain and dew on the shingles migrating inward and then being forced farther inward during the day by solar vapor drive.
Roofing shingles and foam insulation.
Consequently shingle damage and or blow off may occur if shingles are applied directly to insulation.
Asphalt shingles may be damaged or punctured when nailed onto a non rigid surface such as roofing insulation.
Most people do not realize the requirements for proper venting of an attic.
The main concern with spray foam insulation and shingle warranty is proper attic ventilation.
How owens corning is responding to the covid 19 pandemic.
The nail holding ability of the insulation is not adequate.
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It hits the osb roof sheathing and keeps going through the foam into the attic air.
Bailes iii phd july 3 2013.
Get to know more about one of the most popular commercial roofing systems.
Research from florida shows that shingles don t get much hotter with spray foam insulation under the roof sheathing.
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Nail it around the edges with roofing nails.
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If you do not have proper ventilation you are in essence cooking your shingles.
Acute temperatures in uninsulated ventilated attics impact comfort and energy efficiency in living spaces below.
Spray foam insulation effect on a shingle roof.