Roof Boards Wet

Not wet but some areas slightly damp.

Roof boards wet. It is never a good idea to install a roof over wet plywood or any type of roof sheathing. Attic insulation combination of fiberglass covered by cellulose. Plywood is original 49 years old. Rotted boards are the result of moisture reaching the wood.

And when we slit the asphalt felt and pulled it back we found roof boards that were soaking wet. 2 layers of shingles. It s a problem that demands immediate attention and there are no quick fixes. Wet insulation means trapped moisture that will slowly degrade the entire roofing system from the decking to the building itself.

A wet roof deck is also a slippery deck. Trapped moisture encourages corrosion of roofing fasteners and rusting of steel studs and wall ties which reduce wind uplift ratings. Moisture trapped inside of insulation is a breeding ground for mold and bacteria. Wanted to add more cellulose but installer said it would make wet roof worse.

Evidently the source of the dripping water was not a roof leak but condensation of interior moisture under the vapor impermeable tri flex underlayment. Rotten boards on your roof can lead to leaks and more rot. Trapped water will boil when the sun heats the roof and the shingles will then have small pits where the. Inner plywood of roof wet.

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.