Materials:
Only corrosion resistant nails or staples shall be used in applying Eastern White Cedar shingles, hip and ridge units and starters. Stainless steel (Type 304 or 316), aluminum, or hot-dipped zinc-coated steel nails and stainless steel staples have proven to give good service. Bright or blued steel and electro-galvanized nails and staples are not recommended.
Nails:
Nails shall meet local building code requirements. Nails shall be long enough to penetrate through, or at least ¾” (19 mm) into the sheathing, battens, or furring, when driven flush with the surface of the shingle.
Note: The 1995 National Building Code of Canada (NBC 1995) specifies the use of nails having a minimum head diameter of 0.19” (4.8 mm) and a shank thickness of not less than 0.08” (2.0 mm).
Nailing Chart – Roofs
| |
Type |
Gauge & Minimum Nail Length |
Number of Nails |
| New Roof Shingles |
16"
(400 mm) shingles |
1¼" (32 mm) long
No. 14-1/2 gauge |
2 only |
| Re-roof Shingles |
16"
(400 mm) shingles |
1¾" (44 mm) long box nails |
2 only |
Note: For thick material, nails should penetrate through, or at least ¾” (19 mm) into the sheathing.
Nailing Chart – Sidewalls
| Type |
Gauge & Minimum Nail Length |
Minimum Number of Nails |
Maximum Nail Spacing |
| 16" (400 mm) shingles |
1¼" (32 mm) long
No. 14½ gauge |
2 |
3 nails in shingles over 8"
(200 mm) wide |
| Double-course sidewall |
1¾" (44 mm) long casing nail |
2 |
4"
(100 mm) on centre |
Note: For thick material, nails should penetrate through, or at least ¾” (19 mm) into the sheathing.
Staples :
Staples shall be minimum 16 gauge or of equivalent cross-sectional area with a crown width of 7/16” (11 mm). Staples shall be long enough to penetrate through, or at least ¾” (19 mm) into the sheathing, battens, or furring, when driven flush with the surface of the shingle. Staples shall be driven so that their crown is aligned parallel to the exposure line, i.e. across the grain of the shingle.
