Plywood Roof Sheathing Thickness

Several factors must be considered when determining appropriate roof sheathing thickness such as the.

Plywood roof sheathing thickness.

The thickness of plywood used for roof decking depends on the roof slope the spacing of. Many factors affect thickness. Required sheathing thickness for roofing important factors. That s considered to be the minimum.

Plywood subflooring 3 8 plywood plywood roof sheathing 3 4 plywood 4x8 3 4 sheathing plywood 48 24 sheathing plywood. Keep in mind that the load of the roof still plays a role in the plywood thickness. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood. 1 inch 25 4 mm.

That s considered to be the minimum. Installation details shall conform to sections 2304 7 1 and 2304 7 2 for floor and roof sheathing respectively. The minimum plywood for roofing plywood is layers of wood. Produced by apa the engineered wood association formerly the american plywood association in 1989.

Unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick. Always ensure your work site is compliant with current osha regulations. Plywood is made with three or more layers of thin wood glued together with the grain. 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.

Many homes have rafters that are even wider at 24 inches apart and will require a thicker sheet of 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. This video may depict some work practices that do not meet current safety standards. A flatter roof with rafters farther apart may need a thickness of up to inch.