Roof Sheathing Nailing Pattern

A structure s roof truss spacing can vary from every 12 to 24 inches.

Roof sheathing nailing pattern.

Cover sheathing with shingle underlayment felt. Install shingles according to manufacturer recommendations step 1. Boards used for sheathing range from those with a 4 inch face to 48 inch long plywood sheets. Check the nailing surface is level.

Deformed shank i e ring or screw shank nails are required near ridges gables and eaves in areas with design wind speeds over 110 mph 3 second gust but it is typical layout of roof. For clarity sheathing nails are not shown ladder framing at gable ends. Each of these factors plays a role in determining how many nails you ll need to use per board during roof sheathing application. Ventilate the roof according to current building codes.

Cover sheathing with shingle underlayment felt to minimize roof sheathing exposure to weather unless otherwise recommended by sheathing manufacturer. Before hurricane andrew devastated south florida in 1992 roof sheathing was generally attached using 6d nails spaced at 6 inches along the edges of the sheathing and at 12 inches along interior. The second tape should be hooked to the nail at b and extended 5 diagonally to the rake. 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.

The roof ridge by nailing roof sheathing. 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. Always check for a level nailing surface. The number of nails needed for a roof varies on multiple factors such as board face width length and roof truss spacing.

The 5 mark exactly meets the 4 mark on the tape from point a. A typical nailing pattern for a standard osb exterior wall is to insert one 8d nail every six inches along seams and in every stud that lies beneath the plane. The roof framing members into which the sheathing fasteners are driven. Holes drilled in roof sheathing for ventilation roof diaphragm action is maintained.

Properly fasten panels including fastening and spacing hints step 4. The 4 and 5 measurements give. Another consideration relates to the con dition of the building envelope during the high wind. Many homes have been severely.

Tape should be hooked to the nail at point a and extended 4 directly up along the rake and parallel to it. An 8d nail 2 5 inches long is the minimum size nail to use for fastening sheathing panels. Mark this meeting point with a nail. Wood of more dense species such as douglas fir or southern pine provides greater nail with drawal resistance and significantly improves the performance of the sheath ing nailing.

Tab shingles need two nails on each side of the tab.