Stainless steel and galvanized nails are recommended. Use No. 304 for general applications and No. 316 for seacoast exposures. Other types of fasteners are not recommended; they can rust and disintegrate resulting in iron stains and streaks. For best results use “split-less” ring shank stainless steel siding nails. These nails have thin shanks and blunt points to reduce splitting when fastening. Near edges and ends, nail holes may need to be pre-drilled to avoid splitting.
Nails must be long enough to go through the underlying materials, such as sheathing and insulation, and penetrate into at least 1-1/4” of solid wood.
NAIL WITH CARE
Nails should be driven with care. Heavy nailing distorts the wood and may cause splitting. Like all wood products, WindsorONE Trim Boards should be hand nailed. The use of pneumatic fasteners is discouraged for exterior use; but, if used, they must employ stainless steel or galvanized nails and a flush nailing device to ensure that nails are driven snug with the surface. Overdriven nails that are not filled with exterior putty will void the limited warranty.
In some situations you may choose to intentionally countersink nails. If so, follow the same procedure to fill the cavity as with overdriven nails.
Overdriven nails must be remedied immediately. Fill overdriven nail holes with exterior grade wood putty specifically designed for filling exterior nail holes. Allow putty to dry, sand smooth with 100 grit sandpaper and spot prime before painting. Over time, spackling putty may need to be replaced or touched up.