Tile Floor Subfloor Thickness

Cement fiber or similarly reinforced backer board comes in standard 1 4 inch and 1 2 inch thicknesses.

Tile floor subfloor thickness.

The subfloor must be structurally sound as well as thick and stable enough to hold the weight of the tile without moving or flexing. Tile subfloor thickness deflection installing electric radiant heat pouring self leveling mortar leveling flattening the subfloor installing cement board cbu installing schluter ditra marking guidelines for tile how to lay tile how to grout tile joints there s a lot of information and mis information online about what constitutes a suitable subfloor for tile and it s tough to find a. But combined with other methods that measure the finish floor you can get a fairly accurate reading of total floor thickness. A subfloor is the bottom most structural level of your floor.

Preparation for installing floor tile depends on the type of subfloor in the room you are tiling. If it was 3 4 you could install 1 2 plywood over your existing 5 8 then 1 4 cbu then your tile. Should i install durock before laying the tile. This method only measures subfloor thickness.

I am laying the tile on a plywood sub floor above a basement. The bare minimum recommended by most tile setters is a total subfloor thickness of 1 1 8 inch. It supports your decorative floor finish whether it s carpet hardwood vinyl laminate or tile. Adding inch plywood to 5 8 ply will give you a combined nominal thickness of 7 8 inch.

I was thinking 1 4 durock and 1 4 tile which would make my floor height almost the same as my hardwoods in the other rooms. If you are removing particle board then using the same size plywood will bring you back to the right height that you had before. Regardless of the material it must be at least 1. Most prefer a minimum thickness of at least 1 1 4 inch such a inch t g subfloor with inch plywood underlayment.

I am installing ceramic 12 inch by 12 inch tiles in my foyer 150 sq ft. For more information download our pdf about types of subfloors. Uncoupling membranes aren t recommended for tiles smaller than 2 inches square and should not be used when covering old hardwood flooring due to adhesion problems. The floors joist are 19 on center.

If you have an older subfloor constructed of multiple slats rather than large sheets of plywood you can insert your straight edge between the slats.