Roof Sheathing Patters

Properly fasten panels including fastening and spacing hints step 4.

Roof sheathing patters.

Blocking of unsupported edges may be required near gables ridges and eaves follow design drawings. Tab shingles need two nails on each side of the tab. And scroll down to see more details on each with installation hints and tips below. The ability of a roof sheathing panel to resist high winds is directly related to how well it is secured to the roof framing.

Use shingle underlayment felt conforming to astm d226 type i astm d4869 type i or astm d6757 self adhering polymer modified bitumen sheet underlayment should conform to astm d1970 or check roofing manufacturer s. Install sheathing panels according to the recommendations of the engineered wood association apa. It spans the rafters to support the roofing and in the case of panel sheathing such as plywood or osb it acts as a diaphragm with the walls to resist horizontal loads. Roof and wall sheathing 8 10d every 4 6 on the seams and 8 12 in the field shingles six roofing nails or staples per shingle.

The type and number of fasteners required for a specific application is obviously an the engineered wood association apa. Cover sheathing with. Ventilate the roof according to current building codes step 3. Cover sheathing with shingle underlayment felt to minimize roof sheathing exposure to weather unless otherwise recommended by sheathing manufacturer.