Plywood Roof Sheathing Thickness

Avoid roof complaints with proper framing sheathing and roofing techniques.

Plywood roof sheathing thickness. Plywood subflooring 3 8 plywood plywood roof sheathing 3 4 plywood 4x8 3 4 sheathing plywood 48 24 sheathing plywood. Floor or roof sheathing conforming with this table shall be deemed to meet the design criteria of section 2304 7. 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.

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 is made with three or more layers of thin wood glued together with the grain. The minimum plywood for roofing plywood is layers of wood. Produced by apa the engineered wood association formerly the american plywood association in 1989.

Many homes have rafters that are even wider at 24 inches apart and will require a thicker sheet of plywood. Always ensure your work site is compliant with current osha regulations. Installation details shall conform to sections 2304 7 1 and 2304 7 2 for floor and roof sheathing respectively. A flatter roof with rafters farther apart may need a thickness of up to inch.

This video may depict some work practices that do not meet current safety standards. 1 inch 25 4 mm. That s considered to be the minimum. That s considered to be the minimum.

Many factors affect thickness. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood. The thickness of plywood used for roof decking depends on the roof slope the spacing of. Required sheathing thickness for roofing important factors.