How Thick Of Plywood For A Roof

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.

How thick of plywood for a roof.

Plywood thickness for the roof. Is 1 2 osb okay for a standing seam roof and other roofing materials or is 5 8 preferred. Snowfall and ice accumulation can affect the load put on a roof. However 3 4 th inch plywood is also used for a roofing system that has a heavier load.

Never attach roof sheathing with staples. Like most other things there is no one right answer for the plywood thickness of your roof. The typical thickness range for sheathing is 3 8 to 3 4 inch. The cabin is just 440 sf and is in zone 6.

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. 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. Unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick.

Sheathing should be a minimum of 19 32 inch thick. For the less standard 20 inch apart rafters plywood with inch or 5 8 th inch thickness can be used. Can someone direct me to blogs or q a titles that address roof sheathing thickness. 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.

He said it s only a difference of 1 8 thickness. I thought perhaps he made a mistake but no this is what he is proposing. An exception to this standard however may occur if you intend to install slate concrete or tile shingles on your roof. The existing plywood on my roof is only 3 8.

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. Roof will be fully vented. 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. What thickness of plywood for shed roof.

Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. That s considered to be the minimum.