Starcraft Floor Replacement - Plywood? Rivets?

[Dyckens]

Hello,
I'm new to the site. Looks like a great resource. I tried searching for answers to my questions but couldn't fine any.

I'm rebuilding an 85 StarCraft, starting with the floor. The 2 questions I have are:
1. Do i need marine grade plywood or can I use standard ply and seal it with primer or Spar varnish?
2. So I need to use rivets to fasten the new floor to the ribs or are there screws that would work?

Thanks y'all.
Chris

 

[Mark ofs]

I replaced the plywood floor in our Sea Nympth last year with marine grade plywood and used Stainless steel screws in lieu of rivets, worked fine. I have read, if you use treated plywood, you should separate it from coming in contact with the aluminum.

 

[matt167]

Don't use pressure treated wood period. Modern PT has copper in it and, a little chemistry will tell you what dissimilar metals do to eachother..

ACX,BCX, or even prime sheets of CDX will be just fine. and stainless screws can work just fine