Boat Floor Plywood Thickness

The national wood flooring association recommends a minimum plywood panel thickness of 7 8 inch for joist spans of 19 2 to 24 inches and a minimum plywood panel thickness of 5 8 inch for joist spans of 16 inches or less.

Boat floor plywood thickness.

The most common thickness of plywood is 1 2 inch but plywood thickness can range from 1 8 inch to 3 4 inches. At present it is located on central fore aft bearers and others down each side eg no cross members. The soon to be back cabin area of the boat is currently floored with 1 2 inch ply. If your plywood subfloor is too thin it might not cope with the load and it might creak or squeak when you walk on it.

Plywood alternatives you can use other types of boards in place of true plywood. The short answer bluewater 26 coosa board can be used as an exact replacement for any plywood decking as long as you use the same thickness installed in the same way i e. The minimum thickness allowed for ceramic tile installations is two sheets of 5 8 inch thick plywood. The plywood must be exterior grade for all wet areas and it has to be installed in such a way that the joints between each layer do not line up using what is known as a stagger pattern to keep the pieces from ever lining up.

Photo d is a piece of plywood from the floor of a boat wreck. This was located underneath a faux teak floor meaning that it is most likely the original plywood used to build the floor of the boat. Note that even though the plywood has been snapped and left exposed to rain and wind it still holds its integrity. Floor joists are made from 2 by 8 inch or 2 by 10 inch lumber or from engineered quiet beams which are made from a thin layer of chipboard on edge between two lumber caps forming an i shape.

Our marine plywood for boats is made with cca treated douglas fir veneers and high quality marine grade glue. It s in decent nick but i m wondering about the merits of replacing with say 18mm especially as the main back cabin structure will be sitting on it.