It depends on how high you want to raise your floor.

Tile floor plywood thickness. The minimum thickness of plywood for subflooring is about 5/8 inch. 3/4” t&g subfloor installed on floor joist. So far as the level is concerned, the substrate should be within a variation of 1/16” for 3’ length.

Generally, the plywood subfloor should be ¾ inch. 1 1/8”) 2” x 10” joists 16” o.c. 12mm ply (when combined with the thickness of the floor tile and adhesive) can result in a sizeable step into the bathroom, which can represent a trip hazard.

February 18, 2023 by fatimah. That means a wood subfloor of almost ¾ inches can be used, in addition to ½ inch of. It’s also recommended to use a cement backer.

Contrasting with the wall tile which is 3 to 6 inches thick. Cdx plywood should be a minimum of 7/16 inch thick. Since it does not hold fasteners as well as plywood, osb must be a little thicker, or at least 23/32 inch.

I am about to tile my bathroom floor with 40x40cm ceramic tiles and would appreciate advice on the thickness of plywood i need to put down as a base. Plywood and osb are the two most common materials used for floor decking, and typically they are 5/8″ or 3/4″ thick. The average thickness for the floor tile is ½ inch to ¾ inch for each sq of tile.

When using a cement backer board, you can go with whether a ½ inch thickness or a ¼ inch thickness. The few exceptions could be but not limited to. The thickness of the plywood needs to be at least 18mm and of exterior grade.