How Thick Is Roofing Plywood

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.

How thick is roofing plywood.

Steeper rather than flatter roofs will have lesser load per sq. Foot and with a maximum of spacing of 16 inches between rafters. 8d ring shank nails should be used instead. He said it s only a difference of 1 8 thickness.

The typical thickness range for sheathing is 3 8 to 3 4 inch. When used in flooring plywood functions as the subfloor that supports hardwoods tile and carpet floors. That s considered to be the minimum. 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. A local roofer submitted a proposal to me for a roof placement that included replacing rotten plywood with 1 2 cdx. Never attach roof sheathing with staples. Like most other things there is no one right answer for the plywood thickness of your roof.

Most roofs will be sheathed in plywood at least 3 8 inch thick. Loads will vary with the pitch of the roof. Unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick. One of the most important factors when selecting the plywood for your roof is how thick each piece should be.

This kind of plywood can be used on roofs with minimal load. Plywood thickness for the roof. Sheathing should be a minimum of 19 32 inch thick. The minimum thickness of plywood used for roofing is 3 8 th of an inch.

The ideal thickness for the standard rafter spacing of 24 inches is 5 8 th of an. The existing plywood on my roof is only 3 8. I thought perhaps he made a mistake but no this is what he is proposing. 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.

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.