Installing Osb Roof Decking

Check the nailing surface is level step 2.

Installing osb roof decking.

Osb sheathing has different textures on both sides as well. Properly fasten panels including fastening and spacing hints step 4. Curved or uneven roof trusses will cause osb roof sheathing to warp or buckle under roof coverings. A homeowner recently wrote and asked me the following regarding 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. Continue the woodworking project by fitting the plywood sheeting. Provide a 1 8 inch gap. Fitting the roof decking.

Osb is widely used as roof decking material. The textured surface helps flashing and waterproof underlay stay in place effectively. Avoid installing osb with the textured side down. The minimum osb panel size is 24 inches in any direction and each sheet end must rest on a rafter.

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. You may choose between sheets that measure half an inch or 3 4 of an inch thick. In order to get a professional result we recommend you to use 3 4 tongue and groove plywood sheets. Cover sheathing with.

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. 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. Ventilate the roof according to current building codes step 3. The screened surface also provides a little more traction for construction workers during installation.

Lay sheets in rows with the long edge horizontal to the roof bottom. And scroll down to see more details on each with installation hints and tips below. Drill pilot holes trough the rafters and insert the screws into the shed rafters after aligning the overhang at both ends. This instructional video covers how to store space and fasten osb oriented strand board roof sheathing including radiant barrier roof sheathing.

This is usually a prerequisite in building codes.