Roof Sheathing Boards

An excellent fire barrier densdeck roof boards feature a noncombustible core and inorganic surface that offer greater fire protection than other conventional commercial roofing products when applied over combustible roof decks and steel decks.

Roof sheathing boards.

Slats of wood used for roof sheathing are lumber boards with face widths ranging from 4 to 12 inches. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb. Open sheathing may also be chosen for economic reasons but only if used with roofing systems such as metal or tile which. Thermostat 7 16 cat ps2 10 osb sheathing application as 4 x 8.

Generally you ll need to place two nails at each location where it makes contact with a roof truss. The inch thick boards extend from the eaves just past the exterior walls where they butt up against the plywood roof sheathing. Osb sheathing 15 32 cat ps2 10 osb sheathing application as 4 x 8. For slats featuring face widths of 12 inches you will space three nails evenly apart about every 3 inches.

With edge support and the same snow load 3 8 inch osb can be used. For pricing and availability. Shown to withstand delamination deterioration warping and jobsite damage more effectively than other roofing membrane substrates such as paper faced gypsum board fiber board and perlite insulation. 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.

The boards are more attractive when viewed from underneath than rough plywood. 1 by 8 boards commonly used on the eave and rake overhangs when soffits will not be installed rather than as roof sheathing. Open sheathing also called skip sheathing is composed of boards spaced apart.