Osb Thickness For Roof Sheathing

Because of its construction some manufacturers actually make larger sheets of osb.

Osb thickness for roof sheathing.

For pricing and availability. Installation details shall conform to sections 2304 7 1 and 2304 7 2 for floor and roof sheathing respectively. That s considered to be the minimum. For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended.

Thicknesses range from 5 16 to 3 4 inch and the proper one to use. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb. Osb comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones. For pricing and availability.

Roof sheathing thickness unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick. However you might find that osb can better suit your needs than plywood for the roof. Allowable spans for lumber floor and roof sheathing a b for si. 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.

Osb sheathing 15 32 cat ps2 10 osb sheathing application as 4 x 8. 1 inch 25 4 mm. They can range from the standard 4 x 8 piece to a 4 x 9 or even a 4 x 10. Thermostat 7 16 cat ps2 10 osb sheathing application as 4 x 8.

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. With edge support and the same snow load 3 8 inch osb can be used. 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. The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that.

It will support roof. With this thickness any deflection under dead loads only the weight of materials only should prove to be imperceptible.