Plywood Roof Sheathing Thickness

Minimum plywood thickness the international residential code specifies 3 8 inch plywood for sheathing walls with a standard stud spacing of 16 inches if the siding is nailed to the studs through.

Plywood roof sheathing thickness.

Several factors must be considered when determining appropriate roof sheathing thickness such as the. Keep in mind that the load of the roof still plays a role in the plywood thickness. Plywood is made with three or more layers of thin wood glued together with the grain. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood.

When this is the case experts recommend a 5 8 inch thick sheet. 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. That s considered to be the minimum. Required sheathing thickness for roofing important factors.

The minimum plywood for roofing plywood is layers of wood. Unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick. Many homes have rafters that are even wider at 24 inches apart and will require a thicker sheet of plywood. 1 inch 25 4 mm 1 pound per square foot 0 0479 kn m2.

The thickness of plywood used for roof decking depends on the roof slope the spacing of. That s considered to be the minimum.