Issued: March 2016
1. Wood framing – vertical.
- Nails – 0.1205-inch (11 ga ) diameter, 7/16-inch head diameter, barbed galvanized roofing nails. Minimum length – 1-inch.
- Screws – 0.120-inch shank diameter, 7/16-inch diameter pan or wafer head, galvanized sharp point wood screws
- Staples – 16 ga diameter, crowns not less than ¾-inch, galvanized. Minimum length – 1-inch.
- Nails and staples must penetrate minimum ¾-inch into framing. Screws must penetrate minimum 5/8-inch into framing. Lengths must be increased for sheathing or continuous insulation to achieve the required penetration.
2. Wood framing – horizontal.
- Nails – 0.1205-inch (11 ga ) diameter, 7/16-inch head diameter, barbed galvanized roofing nails. Minimum length – 1 ½-inch
- Screws – 0.120-inch shank diameter, 7/16-inch diameter pan or wafer head, galvanized sharp point wood screws. Minimum length – 1 ½-inch
- Staples – 16 ga diameter, crowns not less than ¾-inch, galvanized. Minimum length – 1 ½-inch
- Lengths must be increased for sheathing or continuous insulation to achieve the 1 ½ inch required penetration.
- V-Truss ribs must be flattened when fastener driven. If not, fastener lengths must be increased to achieve 1 ¾ inch penetration.
3. Metal framing
- 0.120-inch shank diameter, 7/16-inch diameter pan or wafer head, galvanized self piercing or self drilling point sheet metal screws.
- Length – to penetrate metal framing by minimum 3/8-inch
4. Concrete or masonry
- Concrete galvanized nails – either power driven, powder actuated, or hand driven.
- ¾-inch minimum length, 0.120-inch minimum diameter, and with heads not less than 3/8-iinch diameter.
- To be installed in accordance with ASTMC1063 Section 7.10.5
5. For Structa stainless laths
- For wood framing, fasteners must be Type 304SS or Type 316SS
- For steel framing, fasteners must be Type 410SS – case hardened
Please contact us for more information about this and other technical questions 1 800 887 4708
