Thickness Of Exterior Plywood On Roof

1 inch 25 4 mm.

Thickness of exterior plywood on roof.

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. So what size plywood should you use for your roof. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame.

There are several factors to consider. Sheet with varying thickness. The minimum thickness of plywood used for roofing is 3 8 th of an inch. This kind of plywood can be used on roofs with minimal 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. What size plywood should you use for your roof. Plywood typically comes in 4 8 ft. Another issue that many people encounter is what size plywood the roof may need.

Plywood with fewer plies is weaker than a plywood with more plies even if they have the same thickness. 8d ring shank nails should be used instead. Multi ply is a catchall term for plywood with seven or more plies. What plywood should you use for a roof.

The industry offers a thickness of anywhere from 5 16 inch to inch. Sheathing should be a minimum of 19 32 inch thick. Installation details shall conform to sections 2304 7 1 and 2304 7 2 for floor and roof sheathing respectively. 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.

Keep in mind that the load of the roof still plays a role in the plywood thickness. This plywood is strong and durable enough for use in roofing framing and other exterior structural projects. A flatter roof with rafters farther apart may need a thickness of up to inch. Look for something that s graded as exposure 1 or exterior.

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