I know my late mom's deck was a cheapo effort. Still, got PTW for the decking boards. Now, all the screws are rusty and pulling out and the wood is going bad, no doubt due to no kinda deck stain/preservatives and covering the deck with household carpenting, which held the moisture even longer than the Rocky Mountain snows. Plus, a buddy told me PTW will rot regular deck screws (3-1/2" ).
I plan to eventually renew the deck boards w/ new PTW boards, but what kinda screws? I don't wanna hafta do this again. ;)
nb