When osb is used as a structural panel it must adhere to specific span ratings specified by the.
Install osb roof sheathing.
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.
Because the plywood roof sheathing under the shingles has become brittle and weak he plans to install new plywood as well as new shingles.
Align the long edge of the sheathing with the ends of the.
Also use more nails and place them closer together to build a stronger roof.
You may choose between sheets that measure half an inch or 3 4 of an inch thick.
Install osb panels on aligned roof trusses.
And scroll down to see more details on each with installation hints and tips below.
This is usually a prerequisite in building codes.
How to correctly install plywood or osb roof sheathing.
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.
When you intend to install osb sheaths try to determine the breadth or the ideal measurement of your choice of material.
Properly fasten panels including fastening and spacing hints step 4.
The minimum osb panel size is 24 inches in any direction and each sheet end must rest on a rafter.
When installing roof sheathing use nails with longer nail shank larger diameter and a larger head than may be required.
But can he simply install new plywood over the old.
The proper way to install osb span ratings.
Cover sheathing with.
Oriented strand board or osb roof sheathing is a preferred material for roofing because of its strength and low weight.
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.
Select osb sheets.
The screened surface also provides a little more traction for construction workers during installation.
Ensure roof trusses are in proper alignment with no curves or uneven sections when installing osb to sheathe roofs.