Plywood Roof Sheathing Nailing Schedule

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

Plywood roof sheathing nailing schedule.

Panel roof sheathing plywood. Spacer type panel edge clips are available from some manufacturers. Note however that minimum 8d nails are recommended for all panels 5 8 inch thick or less. Roof sheathing panel spacing hints.

We use atleast 2 1 4 to 2 1 2 screws to put down 1 2 inch plywood or osb but most of the time we use 2 3 8 coated coil nails also known as 8 s for hand nailing. These schedules were calculated to provide resistance to wind uplift pressure as required by most codes. Nailing schedules for wood structural panel roof sheathing plywood and oriented strand board osb. Attaching plywood and osb sheathing.

The number of nails needed for a roof varies on multiple factors such as board face width length and roof truss spacing. If roof sheathing is cut and removed to achieve an air slot continuity and diaphragm action are affected. To assure best performance follow these panel spacing and nailing recommendations for apa rated sheathing apa rated sturd i floor and apa rated siding. Intermediate panel supports in zone 1 6 inches on center in zone 2 and 4 inches on center in zone 3.

Use a 10d box 0 128 inch by 3 inch nail as a spacer to gauge 1 8 inch edge and end spacing between panels. Note holes should not remove more than half of the sheathing section note. For the 150 mph wind speed region the fastening schedule prescribes nailing at 6 inches on center at supported panel edges and over intermediate panel sup ports in zone 1 4 inches on center in zone 2 and 3 inches on center in zone 3. Use a 10d box nail to gauge 1 8 inch spacing between panels.

Boards used for sheathing range from those with a 4 inch face to 48 inch long plywood sheets. Wet and dry specimens of plywood and. 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. Spacer type panel edge clips may also be used for roof sheathing applications.

Recommendations were developed through engineering analysis and by full scale laboratory testing. 07 27 2007 06 42 am 5. Nails from sheathing to ridge board roof sheathing ridge board ridge board joist or truss joist or truss roof sheathing vent holes on each side of ridge board.