Sealing Boat Floor I Have An Inflatable Boat With A Plywood Floor. What Should I Coat It With For Salt Water Resistance?

I have an inflatable boat with a plywood floor. what should i coat it with for salt water resistance? - sealing boat floor

I would like the coating spent much time as possible, good grip in wet and seal the timber. We need to get up, to mention the sun and salt water and gas may spill some. I would like very very tuff. I thought going in the direction of a lining or epoxy, which is very thick and hard. Thanks for the help