WHAT TYPE OF NAILS SHOULD BE USED WITH TREATED WOOD?
Only hot-dipped galvanised or stainless steel nails should be used with CCA, CA or ACQ-treated wood. If CCA, CA or ACQ is specified, extended periods of wetting are presumably anticipated, and common nails corrode in wood under moist conditions. Electroplated galvanising is not thick enough to resist the corrosion effects under moist conditions. Stainless steel should be used in areas near salt water. With borates, electroplated galvanised nails may prove adequate, because borates are corrosion inhibitors and borate-treated wood is presumably not going to be exposed to extensive liquid water. Further research is needed on the compatibility of fasteners with borate-treated wood. It’s possible that ordinary nails can be used with borate-treated wood, however the research to prove this has not yet been performed.
