How Thick Is Roofing Plywood

Never attach roof sheathing with staples.

How thick is roofing plywood.

The ideal thickness for the standard rafter spacing of 24 inches is 5 8 th of an. When used in flooring plywood functions as the subfloor that supports hardwoods tile and carpet floors. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads. This kind of plywood can be used on roofs with minimal load.

The typical thickness range for sheathing is 3 8 to 3 4 inch. 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. 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.

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. Loads will vary with the pitch of the roof. Foot and with a maximum of spacing of 16 inches between rafters.

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. Like most other things there is no one right answer for the plywood thickness of your roof. 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. He said it s only a difference of 1 8 thickness.

Plywood thickness for the roof. If your roof is more on the flatter side then it s. Unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick. Most roofs will be sheathed in plywood 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. 8d ring shank nails should be used instead. A local roofer submitted a proposal to me for a roof placement that included replacing rotten plywood with 1 2 cdx. 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.