I am making hurricane panels for my house using the technique described here.

The plywood I purchased is pressure treated. The sliding bolts are zinc, so I assume the screws that came with them are also zinc. Is this ok, or should I be using different screws and/or bolts?

1 Answer 1


They are not actually zinc, but zinc-coated steel, also known as galvanized steel.

The treated-wood industry recommends the use of hot-dip galvanized or stainless steel fasteners for use with treated wood. Electroplated/electro-galvanized and mechanically-galvanized coatings should not be considered to be hot-dip galvanized. (Class 55, or higher, mechanical galvanizing provides galvanizing equivalent to the hot-dip galvanizing used on connectors and fasteners.)

Source: Strong-Tie's pressure-treated wood FAQ, which has additional information about various kinds of pressure-treated wood, galvanized steel, and stainless steel.

  • +1 definitely hot-dipped galvanized steel. If you don't, the screws will rust and rot. Just did this when I built my extra room. Commented Aug 18, 2010 at 18:59

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.