How Many Nails Per Sheet Of Plywood On Roof

Nail spacing for sheets of osb and plywood is 8 inches per nail.

How many nails per sheet of plywood on roof.

24 new roof over an old roof. 12 oc on interior sheet rafters and 6 oc on exterior perimeter rafters of each sheet. 18 roof sheathing installation home builder s guide to coastal construction page 2 of 3 recommended that deformed shank nails be used throughout the entire roof. Now you have ten nails in the sheet and it s flush with the rest of them and you go to the next sheet and repeat.

Please be advised that the counts above are approximate and may vary significantly due to the different amount of exposure desired in each job. There are many uses for plywood from roofing to subfloors and everything in between. Depending on the job i will pull my o c measurements as i go or premark the sheet and then tack the top of the sheet at each rafter and drive it home. Comp shingles smooth 1 1 33 2 63.

Osb plywood 72 nails per sheet. Roof material nail length pounds per square coils per square. That s 45 nails per sheet of plywood. Lay sheets in rows with the long edge horizontal to the roof bottom.

8 penny coil nails usually with ring shank and spacing with clips or at least a 10 penny nail. Comp shingles dimensional 1 1 4 1 63 2 63. Because of plywood s versatility different types of nails are recommended for specific jobs. Plywood osb 8d 2 1 2 1 35 na.

Technical fact sheet no. Nails for roof sheathing first if you re in a high wind uplift zone and even if you re not if hurricanes really are a concern you should consider yourself in one you ll want to use a modified nailing schedule typically 6 along the edge and in the field using 8d ring shank nails. Wood shingles 3d 1 1 4 2 28 na. Many manufacturers recommend that nails be spaced no farther apart than 6 inches on the edge of a sheet.

This means that you ll need to use six nails per each truss that runs under the sheathing because each sheet measures 4 feet wide by 8 feet long. Go back to the bottom of the sheet and tack it home. I follow the code requirements and the spacing and attachment methods listed by the apa american plywood association. If 8d common nails are specified the nail diameter must be at least 0 131 inch wider than typical 8d pneumatic nails.

Provide a 1 8 inch gap. The lengths of nails are dependent upon the medium into which the nail is driven and can be adapted for a variety of. Also nails should be no closer than 3 8 inch from the edge of a panel and driven flush. Wood shakes heavy s 6d 2 2 50 na.

Do not countersink these nails. Strong winds can begin to easily pull plywood from walls or roofs in the event they have not been secured properly. 4 feet equals 48 inches which you then divide by 8 to determine that you ll need six nails where the board comes in contact with a truss. Shakes and shingles also come in a variety of widths that may also affect the number of nails used per square.