Plywood Roof Sheathing Nailing Schedule

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.

Plywood roof sheathing nailing schedule.

Roof sheathing panel spacing hints. Recommendations were developed through engineering analysis and by full scale laboratory testing. If roof sheathing is cut and removed to achieve an air slot continuity and diaphragm action are affected. The number of nails needed for a roof varies on multiple factors such as board face width length and roof truss spacing.

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. Tab shingles need two nails on each side of the tab drywall ceiling boards require 1 drywall screws every 6 8 while wall boards require drywall screws every 6 8 on the seams and 10 12 in the field. These schedules were calculated to provide resistance to wind uplift pressure as required by most codes. Boards used for sheathing range from those with a 4 inch face to 48 inch long plywood sheets.

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. Spacer type panel edge clips are available from some manufacturers. 07 27 2007 06 42 am 5. 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.

Note holes should not remove more than half of the sheathing section note. To assure best performance follow these panel spacing and nailing recommendations for apa rated sheathing apa rated sturd i floor and apa rated siding. Spacer type panel edge clips may also be used for roof sheathing applications. 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. Nailing schedules for wood structural panel roof sheathing plywood and oriented strand board osb. 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. Wet and dry specimens of plywood and.

A structure s roof truss spacing can vary from every 12 to 24 inches. Note however that minimum 8d nails are recommended for all panels 5 8 inch thick or less. Use a 10d box nail to gauge 1 8 inch spacing between panels.