Thickness Of Exterior Plywood On Roof

Foot and with a maximum of spacing of 16 inches between rafters.

Thickness of exterior plywood on roof.

Look for something that s graded as exposure 1 or exterior. The minimum thickness of plywood used for roofing is 3 8 th of an inch. What size plywood should you use for your roof. Never attach roof sheathing with staples.

What size plywood for the roof. Sheet with varying 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. This kind of plywood can be used on roofs with minimal load.

1 inch 25 4 mm. The industry offers a thickness of anywhere from 5 16 inch to inch. 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. Sheathing should be a minimum of 19 32 inch thick.

The typical thickness range for sheathing is 3 8 to 3 4 inch. Installation details shall conform to sections 2304 7 1 and 2304 7 2 for floor and roof sheathing respectively. Another issue that many people encounter is what size plywood the roof may need. Plywood typically comes in 4 8 ft.

Multi ply is a catchall term for plywood with seven or more plies. Steeper rather than flatter roofs will have lesser load per sq. 8d ring shank nails should be used instead. Plywood with fewer plies is weaker than a plywood with more plies even if they have the same thickness.

Keep in mind that the load of the roof still plays a role in the plywood thickness. Floor or roof sheathing conforming with this table shall be deemed to meet the design criteria of section 2304 7. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. What plywood should you use for a roof.

This plywood is strong and durable enough for use in roofing framing and other exterior structural projects.