Originally Posted by BLL17
Dear Bart, do you know if it is okay to use 15/16" subfloor? I wanted to use Nylaboard but after using your post it seems better to use plywood ... the nylaboard is recommended by eco people for non toxic allergy issues. but the company is going out of business and all they have left is 15/16" thanks
You'll run into a difference in weight, and the door will be slightly easier to hit, but for a frame-off the thickness of the subfloor will have little impact.
Personally, I find plywood a nice material to work with, but opinions vary
I'm a strong believer in protecting the plywood surface from water damage; a couple of coats of epoxy & paint on the top surface will really help if your trailer should develop a leak that's not immediately detected. Painting the frame (or using roofing tar on the top, but that's messy) will help prevent
problems should that area get wet. Wet steel rusts, and the rust attacks the wood.
I would also redesign the rear hold down plate to avoid the obviously bad design that leads to rear-end separation. Keeping water away from the plywood/steel interface is important; I used stainless steel to replace the steel angle plate.