Osb Thickness For Roof Sheathing

For pricing and availability.

Osb thickness for roof sheathing.

For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended. 1 inch 25 4 mm. For pricing and availability. You need to find a sheathing with a span rating of at least 32 16 which means either 15 32 or 1 2 thick osb.

With edge support and the same snow load 3 8 inch osb can be used. Thermostat 7 16 cat ps2 10 osb sheathing application as 4 x 8. However you might find that osb can better suit your needs than plywood for the roof. Installation details shall conform to sections 2304 7 1 and 2304 7 2 for floor and roof sheathing respectively.

It will support roof. The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. Because of its construction some manufacturers actually make larger sheets of osb. Osb comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones.

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. With this thickness any deflection under dead loads only the weight of materials only should prove to be imperceptible. They can range from the standard 4 x 8 piece to a 4 x 9 or even a 4 x 10. 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.

Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb. 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. Roof sheathing thickness unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick. Osb sheathing 15 32 cat ps2 10 osb sheathing application as 4 x 8.

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. That s considered to be the minimum.