How Thick Is Roofing Plywood

If your roof is more on the flatter side then it s.

How thick is roofing plywood.

This kind of plywood can be used on roofs with minimal load. Plywood thickness for the roof. Never attach roof sheathing with staples. 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.

Most roofs will be sheathed in plywood at least 3 8 inch thick. A local roofer submitted a proposal to me for a roof placement that included replacing rotten plywood with 1 2 cdx. The existing plywood on my roof is only 3 8. 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.

Loads will vary with the pitch of the roof. He said it s only a difference of 1 8 thickness. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. Foot and with a maximum of spacing of 16 inches between rafters.

Like most other things there is no one right answer for the plywood thickness of your roof. 8d ring shank nails should be used instead. 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. The typical thickness range for sheathing is 3 8 to 3 4 inch.

That will suffice on a roof with rafters set 16 inches apart with minimal roof loads. Unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick. When used in flooring plywood functions as the subfloor that supports hardwoods tile and carpet floors. That s considered to be the minimum.

The minimum thickness of plywood used for roofing is 3 8 th of an inch. Steeper rather than flatter roofs will have lesser load per sq. The ideal thickness for the standard rafter spacing of 24 inches is 5 8 th of an. The most common thickness of plywood is 1 2 inch but plywood thickness can range from 1 8 inch to 3 4 inches.

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.