Handbook - Fastening

  • Use 8d nails designed for wood trim and siding that have thin shanks, blunt points and full round heads with annular threads.
  • Fasteners must penetrate a full 1 1/4" into substrate. (stud or joist)
  • Fasten 2" maximum from end of boards.
  • Stainless fasteners are preferred over galvanized, as there’s less chance of corrosion. (galv. stripping off fasteners)
  • Nail guns can be used – PSI between 80-100, dependent upon gun, nail, outside temperature, and substrate.
  • Use 7d trim screws to better control expansion/contraction.
  • In temps under 40°F, pre-drilling may be required.

Fastening Schedule

To control movement of boards

Board Width Fasteners per width a maximum of every 16" on center
4" & 6" 2
8" & 10" 3
12" 3-4
16" 4-5

Recommended Fastener Screws

Fasten Master Cortex System Screw Plug System with VERSATEX Plugs

Starborn Pro Plug System

*Eliminates need to fill fasteners or screw holes.

Simpson Strong-Tie 2 1/4" Trim Screw or Equal. Can be set flush with trim.

Recommended Fastener Nails

8D Nails with Annular threads (ex. Simpson Strong-Tie Trifecta Nail). The Trifecta Nail is available collatated for use with a variety of nail guns.