How Long Does Plywood Last On A Roof

50 years wood shake roof covering.

How long does plywood last on a roof.

The structural component of the roof. 25 years wood shingle roof covering. This is why plywood is considered as the better option for roofing. 3 sheets are a bit rotten especially on the edge but overall it is sti read more.

Overall plywood is a little bit better for roofing. Even though the wood is porous it is more natural and it can dry quickly. The normal life span of different types of roofing. When the roofing material dries quicker it can be used to make sure that the roof will stay firm for a longer time.

As plywood lasts about 30 to 40 years and we run the risk of delamination and required replacement in a few years. Chances are the shingles on your roof were attached on top of a plywood base. Most roofing jobs includes a minimum of three sheets of plywood that are part of the backbone of the roof. 25 years composition shingle roof.

The other two have stated that as long as the plywood is good and stays dry it can last forever. The plywood believe it or not was still in good shape after about 5 years of complete exposure. The most common uses for plywood include support for floors walls roofs and garages in residential construction. Sometimes referred to as roof sheathing or a roof deck this plywood acts as a foundation for the layers of underlay and the shingles on your roof and connects the roof to the frame of the house.

Except in climates with extreme humidity causing almost year around condensation like pacific northwest olympic peninsula and coastal pacific canada and southeast alaska and upper maine coastline for example and some constantly 100 humidity areas in the deep south your sheathing should with proper attic ventilation last at least 70 100 years at least till the third or fourth reroof and very commonly roof sheathing strip roofing can last 100 200 years if leaks are taken care of. The roof is covered with 1 4 plywood sheeting and has 4 sheets on each side of the roof 8 x4. When used for roofing plywood panels are covered and protected by a variety of building materials that keep the elements at bay including roof felt underlayment flashing and shingles. Soffit the underside of the eaves.

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