Nailing Pattern For Plywood Roof Sheathing

Wet and dry specimens of plywood and osb panels.

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. Properly fasten panels including fastening and spacing hints step 4. For clarity sheathing nails are not shown ladder framing at gable ends.

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

Because of the large profile that plywood presents it is important to nail the edges securely. 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. Check the nailing surface is level step 2. Cover sheathing with shingle underlayment felt to minimize roof sheathing exposure to weather unless otherwise recommended by sheathing manufacturer.

Many manufacturers recommend that nails be spaced no farther apart than 6 inches on the edge of a sheet. Holes drilled in roof sheathing for ventilation roof diaphragm action is maintained. And scroll down to see more details on each with installation hints and tips below. Ladder framing at gable ends use extra care when attaching a ladder framed exten sion to a gable end.

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. Ventilate the roof according to current building codes step 3. Many homes have been severely. Attaching plywood and osb sheathing.

Lumber width slats of wood used for roof sheathing are lumber boards with face widths ranging from 4 to 12 inches. Intermediate panel supports in zone 1 6 inches on center in zone 2 and 4 inches on center in zone 3. For slats featuring face widths of 12 inches you will space three nails evenly apart about every 3 inches. 07 27 2007 06 42 am 5.

These schedules were calculated to provide resistance to wind uplift pressure as required by most codes.