BC construction grade plywood - test results

[jtexas]

Last spring I needed a quick short-term solution for a section of flooring that had rotted out. I used 1/2 inch construction grade plywood, 3 ply, BC, with two coats each of Rustoleum water-based primer and oil-based paint. This weekend I took the floor out to do a little remodeling & thought I would share the results.<br /><br />This is a 27" by 45" section of floor with a chair pedestal, plus fuel tanks & battery resting on it. The boat is stored outside, covered. The floor gets exposed to water during use, but drainage is good. <br /><br />I kept a remnant from that same piece of plywood, about 21" x 48" in my garage; the remnant is starting to swell a little in places, showing signs of delamination. But the floor still looks in good shape, no distortion or soft spots anywhere.<br /><br />I'm going to continue with the floor in place, and I'll report again next year.