Thickness Of Exterior Plywood On Roof

Sheet with varying thickness.

Thickness of exterior plywood on roof.

Installation details shall conform to sections 2304 7 1 and 2304 7 2 for floor and roof sheathing respectively. Multi ply is a catchall term for plywood with seven or more plies. Plywood with fewer plies is weaker than a plywood with more plies even if they have the same thickness. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame.

Look for something that s graded as exposure 1 or exterior. A flatter roof with rafters farther apart may need a thickness of up to inch. 1 inch 25 4 mm. This kind of plywood can be used on roofs with minimal load.

What size plywood should you use for your roof. This plywood is strong and durable enough for use in roofing framing and other exterior structural projects. Another issue that many people encounter is what size plywood the roof may need. What size plywood for the roof.

What plywood should you use for a roof. 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. There are several factors to consider. The industry offers a thickness of anywhere from 5 16 inch to inch.

So what size plywood should you use for your roof. Foot and with a maximum of spacing of 16 inches between rafters. Plywood typically comes in 4 8 ft. The minimum thickness of plywood used for roofing is 3 8 th of an inch.

Floor or roof sheathing conforming with this table shall be deemed to meet the design criteria of section 2304 7. Never attach roof sheathing with staples. Sheathing should be a minimum of 19 32 inch thick. 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.

The typical thickness range for sheathing is 3 8 to 3 4 inch.