Plywood Roof Sheathing Nailing Schedule

Intermediate panel supports in zone 1 6 inches on center in zone 2 and 4 inches on center in zone 3.

Plywood roof sheathing nailing schedule.

Spacer type panel edge clips are available from some manufacturers. Wet and dry specimens of plywood and. To assure best performance follow these panel spacing and nailing recommendations for apa rated sheathing apa rated sturd i floor and apa rated siding. Roof sheathing panel spacing hints.

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. Nailing schedule is the familiar 6 inches on center at supported panel edges including gable end walls and 12 inches on center over intermediate panel supports. 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.

Even when siding is attached to plywood or osb through a layer of non structural continuous insulation it does not need to hit framing members if the siding is attached to the continuous plywood or osb sheathing as recommended in the fastening schedule in nail base sheathing for siding and trim attachment form q250 page 6. Recommendations were developed through engineering analysis and by full scale laboratory testing. Nailing schedules for wood structural panel roof sheathing plywood and oriented strand board osb. Attaching plywood and osb sheathing.

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. Use a 10d box nail to gauge 1 8 inch spacing between panels. Note however that minimum 8d nails are recommended for all panels 5 8 inch thick or less. If roof sheathing is cut and removed to achieve an air slot continuity and diaphragm action are affected.

These schedules were calculated to provide resistance to wind uplift pressure as required by most codes. Panel roof sheathing plywood. 07 27 2007 06 42 am 5. A structure s roof truss spacing can vary from every 12 to 24 inches.

Spacer type panel edge clips may also be used for roof sheathing applications. 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. 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.