Installing Osb On A Roof

Ensure roof trusses are in proper alignment with no curves or uneven sections when installing osb to.

Installing osb on a roof.

Ventilate the roof according to current building codes step 3. Check the nailing surface is level step 2. 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. You may choose between sheets that measure half an inch or 3 4 of an inch thick.

Install osb textured side up. Install osb panels on aligned roof trusses. Installing osb roof sheathing. Select osb sheets.

Since a standard three tab asphalt shingle roof typically weights between 225 and 300 pounds per square the extra plywood will significantly increase the weight of the roof you install. If the inside finished ceiling height will be 8 feet you can hang 9 foot osb panels vertically on the exterior walls. Cover sheathing with. 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.

Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps. The screened surface also provides a little more traction for construction workers during installation. Avoid the errors described when installing this roof sheathing. Osb sheathing has different textures on both sides as well.

Properly fasten panels including fastening and spacing hints step 4. Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails. The minimum osb panel size is 24 inches in any direction and each sheet end must rest on a rafter. The proper way to install osb span ratings.

This is usually a prerequisite in building codes. And scroll down to see more details on each with installation hints and tips below. When osb is used as a structural panel it must adhere to specific span ratings specified by the. Osb panels come in 4 foot widths and 8 foot or longer lengths.