Osb Thickness For Roof Sheathing

Thermostat 7 16 cat ps2 10 osb sheathing application as 4 x 8.

Osb thickness for roof sheathing.

However you might find that osb can better suit your needs than plywood for the roof. Osb roof decking thickness 7 16 1 2 or 5 8 currently we space rafters 16 oc and use 7 16 osb with h clips. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb. Sheets of 7 16 inch thick with no edge support can be used in an area where the snow load is 30 pounds per square foot.

Osb comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones. The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. We re in dallas so we don t engineer for tremendous live loads for an asphalt shingle and we feel comfortable with 16 oc rafter spacing and 7 16 osb decking. They can range from the standard 4 x 8 piece to a 4 x 9 or even a 4 x 10.

For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended. Because of its construction some manufacturers actually make larger sheets of osb. With edge support and the same snow load 3 8 inch osb can be used. It will support roof.

That s considered to be the minimum. Osb sheathing 15 32 cat ps2 10 osb sheathing application as 4 x 8. Floor or roof sheathing conforming with this table shall be deemed to meet the design criteria of section 2304 7. For pricing and availability.

Allowable spans for lumber floor and roof sheathing a b for si. Thicknesses range from 5 16 to 3 4 inch and the proper one to use. 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. For pricing and availability.

1 inch 25 4 mm. Roof sheathing thickness unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick.