Roof Boards Wet

Plywood is original 49 years old.

Roof boards wet.

Trapped water will boil when the sun heats the roof and the shingles will then have small pits where the. To gain access to the roof use proper ladders or scaffolding which should also be dry to prevent slips. It s a problem that demands immediate attention and there are no quick fixes. It is never a good idea to install a roof over wet plywood or any type of roof sheathing.

2 layers of shingles. Inner plywood of roof wet. Rotted boards are the result of moisture reaching the wood. Wear soft soled shoes and follow all common safety practices when working on the roof.

Wet insulation means trapped moisture that will slowly degrade the entire roofing system from the decking to the building itself. Trapped moisture encourages corrosion of roofing fasteners and rusting of steel studs and wall ties which reduce wind uplift ratings. Wanted to add more cellulose but installer said it would make wet roof worse. Attic insulation combination of fiberglass covered by cellulose.

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. A wet roof deck is also a slippery deck. And when we slit the asphalt felt and pulled it back we found roof boards that were soaking wet. The asphalt felt paper under the tri flex left in place during the most recent reroof was 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. Not wet but some areas slightly damp.