Installing Osb Roof Decking

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.

Installing osb roof decking.

Cover sheathing with. In order to get a professional result we recommend you to use 3 4 tongue and groove plywood sheets. Osb roof panels should always be installed with the grade stamp facing into the attic and the screened surface with the nail guide lines facing up. Osb is widely used as roof decking material.

The minimum osb panel size is 24 inches in any direction and each sheet end must rest on a rafter. Check the nailing surface is level step 2. Drill pilot holes trough the rafters and insert the screws into the shed rafters after aligning the overhang at both ends. Fitting the roof decking.

Provide a 1 8 inch gap. This instructional video covers how to store space and fasten osb oriented strand board roof sheathing including radiant barrier roof sheathing. The textured surface helps flashing and waterproof underlay stay in place effectively. You may choose between sheets that measure half an inch or 3 4 of an inch thick.

Properly fasten panels including fastening and spacing hints step 4. Lay sheets in rows with the long edge horizontal to the roof bottom. The screened surface also provides a little more traction for construction workers during installation. Install osb textured side up.

This is usually a prerequisite in building codes. Ventilate the roof according to current building codes step 3. When you intend to install osb sheaths try to determine the breadth or the ideal measurement of your choice of material. Osb sheathing has different textures on both sides as well.

Oriented strand board commonly referred to as osb is a type of engineered lumber similar to particle board formed by adding adhesives and then compressing layers of wood strands. And scroll down to see more details on each with installation hints and tips below. When the grade stamp is covered by roofing the building inspector will not be able to confirm that the correct osb roofing panel was used. Curved or uneven roof trusses will cause osb roof sheathing to warp or buckle under roof coverings.

Avoid installing osb with the textured side down.