Roof Boards Wet

2 layers of shingles.

Roof boards wet.

It is never a good idea to install a roof over wet plywood or any type of roof sheathing. And when we slit the asphalt felt and pulled it back we found roof boards that were soaking wet. Evidently the source of the dripping water was not a roof leak but condensation of interior moisture under the vapor impermeable tri flex underlayment. Rotted boards are the result of moisture reaching the wood.

Moisture trapped inside of insulation is a breeding ground for mold and bacteria. Wear soft soled shoes and follow all common safety practices when working on the roof. The osb and in fact any wood panels must be allowed to dry completely depending on how wet the panels are this could be a few days before any roofing material is applied to avoid trapping moisture under the roof material that could cause edge swell and buckling. Inner plywood of roof wet.

Wet insulation means trapped moisture that will slowly degrade the entire roofing system from the decking to the building itself. For safety reasons it is best only to work on the roof when all surfaces are dry. Trapped moisture encourages corrosion of roofing fasteners and rusting of steel studs and wall ties which reduce wind uplift ratings. Attic insulation combination of fiberglass covered by cellulose.

Wanted to add more cellulose but installer said it would make wet roof worse. It s a problem that demands immediate attention and there are no quick fixes. The asphalt felt paper under the tri flex left in place during the most recent reroof was wet. Plywood is original 49 years old.

Trapped water will boil when the sun heats the roof and the shingles will then have small pits where the. Rotten boards on your roof can lead to leaks and more rot.