A: You are building a quality deck with the best decking materials. Do you think rusty spots at each fastening location would look good? Also, stainless steel screws have no reaction with treated lumber as galvanized fasteners do which could cause them to rust out and fail to hold the deck down. You can learn more about stainless steel fasteners by visiting www.swansecure.com
Harry
Let me add a couple of other comments about stainless steel screws:
George
Photo curtesy of EB-TY® Hidden-Deck Fastening SystemsTM