Osb Roof Sheathing Overhang

The everyday sheathing used on the body of a roof is not rated for weather exposure so when exposed eaves and or rakes occur at the perimeter a different more expensive weather rated grade of plywood or osb must be used.

Osb roof sheathing overhang.

10d ring shank nails at 4 in. A roof system consists of several elements working together to protect the home. In the u s roof sheathing is almost always composed of wood usually osb oriented strand board or plywood. 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.

Avoid butting osb panels tightly leave a 3 mm 1 8 inch gap between the osb panels to allow for expansion. 1 by 8 boards commonly used on the eave and rake overhangs when soffits will not be installed rather than as roof sheathing. Roof trusses must be dry when sheathing a roof with osb to prevent mold growth in the roof and coverage gaps as the trusses dry and shrink. Osb is lightweight relatively inexpensive and strong enough to resist bending or breaking should someone walk on the roof.

Types of sheathing typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb. I m halfway though sheeting the roof of my shipping container shop and already need to redo some of it. Roof sheathing or decking is one of those elements. At exposed roof overhangs the sheathing must be rated for exposure to the weather.

The boards are more attractive when viewed from underneath than rough plywood. Roof sheathing thickness maximum overhang length attachment 7 16 1 2 in. 8d ring shank nails at 4 in. Watch this now to learn how to avoid this same pr.

With edge support and the same snow load 3 8 inch osb can be used. Osb sheathing 15 32 cat ps2 10 osb sheathing application as 4 x 8. For pricing and availability. Position the first piece of plywood or oriented strand board sheathing on the bottom edge of the rafter tails at one end of the roof.

Osb or plywood 18 in. Osb or plywood 18 in. For pricing and availability. Thermostat 7 16 cat ps2 10 osb sheathing application as 4 x 8.

The inch thick boards extend from the eaves just past the exterior walls where they butt up against the plywood roof sheathing. Align the long edge of the sheathing with the ends of the. 1x6 or narrower planks 24 in.