Roof Sheathing Thickness Osb

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

Roof sheathing thickness osb.

1 inch 25 4 mm. Most roofs will be sheathed in plywood at least 3 8 inch thick. Provides exceptional dimensional stability and stiffness. Allowable spans for lumber floor and roof sheathing a b for si.

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. Installation details shall conform to sections 2304 7 1 and 2304 7 2 for floor and roof sheathing respectively. With edge support and the same snow load 3 8 inch osb can be used. Osb is lightweight relatively inexpensive and strong enough to resist bending or breaking should someone walk on the roof.

Osb sheathing 15 32 cat ps2 10 osb sheathing application as 4 x 8. For pricing and availability. Loads will vary with the pitch of the roof. In the u s roof sheathing is almost always composed of wood usually osb oriented strand board or plywood.

Oriented strand board is an excellent choice for roof deck wall and subfloor sheathing. Thicknesses range from 5 16 to 3 4 inch and the proper one to use. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads. 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.

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. 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.