Flat Roof Plywood Thickness

He said it s only a difference of 1 8 thickness.

Flat roof plywood thickness.

Foot and with a maximum of spacing of. Unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick. Never attach roof sheathing with staples. In roofing plywood can be used as roof decking.

The existing plywood on my roof is only 3 8. Loads will vary with the pitch of the roof. This minimum will only work if the rafters are set 16 inches apart at most and if the roof doesn t have too much load. Rafters that are slightly farther apart might require inch or 5 8 inch thick plywood.

Steeper rather than flatter roofs will have lesser load per sq. Required dimensions of plywood for roofing. 8d ring shank nails should be used instead. Plywood typically comes in 4 8 ft.

Osb and plywood come in thicknesses ranging from 5 16 to 3 4 inch and the thickness needed for a particular roof depends on several factors including rafter spacing expected load and roof design. I thought perhaps he made a mistake but no this is what he is proposing. That s considered to be the minimum. Sheet with varying thickness.

Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. The most common thickness of plywood is 1 2 inch but plywood thickness can range from 1 8 inch to 3 4 inches. The typical thickness range for sheathing is 3 8 to 3 4 inch. 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.

Whether you re looking for plywood pitched roofing materials flat roofing materials or accessories we ve got everything you ll need. The minimum thickness of plywood used for roofing is 3 8 th of an inch. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads. A local roofer submitted a proposal to me for a roof placement that included replacing rotten plywood with 1 2 cdx.

That s considered to be the minimum. If you have any. This kind of plywood can be used on roofs with minimal load. Sheathing should be a minimum of 19 32 inch thick.