We do not recommend electro-galvanized screws (also called clear-zinc coated) for exterior applications. They will corrode quickly in contact with the elements. Mechanically galvanized screws are generally suitable for decks and other outdoor projects made of pressure-treated lumber.
Most rot-resistant pressure-treated lumber sold for homeowner use relies on two copper-based wood preservatives — alkaline copper quaternary and copper .
Shop our selection of Deck Screws in the Lumber & Composites Department at The Home Depot.
Square- or torx-driven screws drive faster and easier and don't strip out when you need them most. If you're using pressure-treated wood for your frame, plan on .
Choosing deck fasteners and hardware, such as joist hangers, used to be pretty. After 2004, all that changed with the phase out of CCA-treated lumber and the