How Thick Of Plywood For A Roof

However 3 4 th inch plywood is also used for a roofing system that has a heavier load.

How thick of plywood for a roof. Is 1 2 osb okay for a standing seam roof and other roofing materials or is 5 8 preferred. Like most other things there is no one right answer for the plywood thickness of your roof. What thickness of plywood for shed roof. That s considered to be the minimum.

Standard roof sheathing which consists of 4 by 8 sheets of plywood or oriented strand board or osb is 1 2 inch thick and attaches directly to the roof rafters or the roof trusses. Plywood thickness for the roof. Unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick. He said it s only a difference of 1 8 thickness.

A local roofer submitted a proposal to me for a roof placement that included replacing rotten plywood with 1 2 cdx. The thickness of plywood used for roof decking depends on the roof slope the spacing of rafters and the weight of other material to be put over the decking as well as the design load the. The typical thickness range for sheathing is 3 8 to 3 4 inch. 8d ring shank nails should be used instead.

Never attach roof sheathing with staples. Sheathing should be a minimum of 19 32 inch thick. Post by diy johnny tue feb 20 2018 7 27 pm not advice but i d opt for the 18 if it were my shed. One of the most important factors when selecting the plywood for your roof is how thick each piece should be.

Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. The cabin is just 440 sf and is in zone 6. 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. Snowfall and ice accumulation can affect the load put on a roof.

My cabin trusses will be 24 oc and i will use either 1 2 or 5 8 osb sheathing and a standing seam metal roof. Roof will be fully vented. The existing plywood on my roof is only 3 8. The work is in building it collecting the material etc so i take the view that the extra cost is small compared to the work effort.

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. Can someone direct me to blogs or q a titles that address roof sheathing thickness.