Installing Osb Roof Decking

This instructional video covers how to store space and fasten osb oriented strand board roof sheathing including radiant barrier roof sheathing.

Installing osb roof decking.

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. The textured surface helps flashing and waterproof underlay stay in place effectively. Provide a 1 8 inch gap.

The screened surface also provides a little more traction for construction workers during installation. You may choose between sheets that measure half an inch or 3 4 of an inch thick. Osb is widely used as roof decking material. Drill pilot holes trough the rafters and insert the screws into the shed rafters after aligning the overhang at both ends.

Continue the woodworking project by fitting the plywood sheeting. Avoid installing osb with the textured side down. 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. Avoid putting osb on wet roof trusses.

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. Install osb textured side up. Fitting the roof decking. Properly fasten panels including fastening and spacing hints step 4.

A homeowner recently wrote and asked me the following regarding osb roof decking. This is usually a prerequisite in building codes. 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. Check the nailing surface is level step 2.

Cover sheathing with. The minimum osb panel size is 24 inches in any direction and each sheet end must rest on a rafter. Lay sheets in rows with the long edge horizontal to the roof bottom. Ventilate the roof according to current building codes step 3.

Osb sheathing has different textures on both sides as well.