I'd use Durabak. It's a roll on bed lining type, use the textured, and your decking will last forever. Great stuff. I built a box for in my truck, I put the dog kennels on top of the box. The box is completely coated in durabak, and it has never allowed water in.

http://www.durabakcompany.com/

Doug

Last edited by Drahts; 08/31/15 09:28 AM.