Roof sheathing panel spacing hints.
Roof sheathing nailing schedule.
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.
Note holes should not remove more than half of the sheathing section note.
The critical fasteners occur at the gable framing member not necessarily at the edge of the sheathing.
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.
1 2 fiberboard sheathing b 1 galvanized roof nail 1 16 gage staple with 7 16 or 1 crown 3 edge 6 intermediate supports 35.
If roof sheathing is cut and removed to achieve an air slot continuity and diaphragm action are affected.
Sheathing should be a minimum of 19 32 inch thick.
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.
25 32 fiberboard sheathing b.
Or less roof fastening zone wind main sheathing to gable overhang velocity roof end wall framingg eaves 3 second panel 123 2 3 2 3.
8d ring shank nails should be used instead.
Never attach roof sheathing with staples.
Tighter nail spacing is recommended 4 inches on center maximum.
Roof sheathing and the gable truss.
Roofing contractors are not responsible for the attachment of structural panel sheathing to underlying wood framing proper nailing is an important consider ation in the overall performance of steep slope roof assemblies particularly in high wind regions therefore i en courage you to be familiar with these new fastener schedules.
Roof sheathing fastening schedulea b c d e 8d common 0 131 x 2 1 2 inches or ring shank 0 135 x 2 1 2 inches except where noted for exposure b enclosed buildings roof framing spaced 24 inches o c.
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.
Cover sheathing with shingle underlayment felt to minimize roof sheathing exposure to weather unless otherwise recommended by sheathing manufacturer.
Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame.
Method for maintaining a continuous load path at the roof ridge by nailing roof sheathing.
Spacer type panel edge clips are available from some manufacturers.
The typical thickness range for sheathing is 3 8 to 3 4 inch.
The number of nails needed for a roof varies on multiple factors such as board face width length and roof truss spacing.
A structure s roof truss spacing can vary from every 12 to 24 inches.
Boards used for sheathing range from those with a 4 inch face to 48 inch long plywood sheets.
