Nailing Pattern For Plywood Roof Sheathing

Because of the large profile that plywood presents it is important to nail the edges securely.

Nailing pattern for plywood roof sheathing.

Strong winds can begin to easily pull plywood from walls or roofs in the event they have not been secured properly. Nailing schedules for wood structural panel roof sheathing plywood and oriented strand board osb. These schedules were calculated to provide resistance to wind uplift pressure as required by most codes. Recommendations were developed through engineering analysis and by full scale laboratory testing.

Generally you ll need to place two nails at each location where it makes contact with a roof truss. Many homes have been severely. Cover sheathing with. The roof ridge by nailing roof sheathing.

Properly fasten panels including fastening and spacing hints step 4. 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. 07 27 2007 06 42 am 5. Cover sheathing with shingle underlayment felt to minimize roof sheathing exposure to weather unless otherwise recommended by sheathing manufacturer.

Lumber width slats of wood used for roof sheathing are lumber boards with face widths ranging from 4 to 12 inches. 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. 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. Intermediate panel supports in zone 1 6 inches on center in zone 2 and 4 inches on center in zone 3.

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. Holes drilled in roof sheathing for ventilation roof diaphragm action is maintained. For clarity sheathing nails are not shown ladder framing at gable ends. Many manufacturers recommend that nails be spaced no farther apart than 6 inches on the edge of a sheet.

Attaching plywood and osb sheathing. Ladder framing at gable ends use extra care when attaching a ladder framed exten sion to a gable end. 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. Ventilate the roof according to current building codes step 3.

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