Gaps In Plywood Roof

This was a room addition added years ago and is low pitched 12 2.

Gaps in plywood roof.

Unsealed seams diminish the effectiveness of the cooling and heating systems of a home which can adversely affect utility costs. Roofer ripped all wood off to rafters installed new plywood some kind of felt or base and torched down a rubber roof. Voids in plywood are simply large holes that occur naturally in the surface of the wood. If the flatness of sheathing or flooring panels is acceptable apa would generally recommend that any finish flooring siding or roofing be installed as planned regardless of whether gaps are present.

Rafters run from the peak of the roof. Combining sheets of plywood makes the wood project more durable. Roofs are framed with rafters or trusses which are rafters joined by internal braces so they install as a single component. Will the rubber sag over time in this gap.

In one area there is a 1 1 2 gap in the plywood where it attaches to the wood extending from my house. While it s best to fill any voids prior to attaching pieces of plywood together you can fill voids between plywood sheets with wood filler. The minimum plywood for roofing. Severe weather 1 2 in common douglas fir plywood sheathing application as 4 x 8.

Plywood used as a subfloor wall underlayment or roof sheathing needs to have the seams sealed with caulk. Virtually every one recommends that you your carpenter or builder create a 1 8 inch gap around all edges when installing plywood. Use a 16d sinker nail for this purpose. Gaps that were initially present may have closed due to normal moisture related expansion.

Roofer says it is acceptable and the local building inspector.