ICC-ES AC257

Full Name

ICC-ES AC257 – Acceptance Criteria for Corrosion-resistant Fasteners and Evaluation of Corrosion Effects of Wood Treatments

Scope

AC257 ensures that fasteners used with treated wood can withstand the corrosive effects of the treatment chemicals, weather, and salt without degrading prematurely. This helps maintain the structural integrity and lifespan of constructions using treated wood.

Keywords

hot-dip galvanized fasteners; alternative fastener coatings; nail corrosion; screw corrosion; corrosion resistance testing; weather resistance testing; salt spray testing; ACQ; ammoniacal copper quaternary; wood preservative chemicals; wood decay protection; ICC-ES; acceptance criteria; corrosion-resistant fasteners; treated wood; wood treatment chemicals; building codes

Resources

• ICC Evaluation Service Website: ICC-ES AC257 – Corrosion-resistant Fasteners and Evaluation of Corrosion Effects of Wood Treatments