Board Under Tile

A successful tile installation depends largely on the type substrate the tile is adhered to.

Board under tile.

Now largely regarded as the very best underlayment for ceramic tile in any application floors walls and countertops cement based backer board goes by many names. Use a polymer modified thin set a type of mortar to attach the backer board to the subfloor. This provides a solid surface under the tile that prevents flexing that could lead to cracking. Whether it s a wall floor or countertop tile installation using the right substrate is crucial for preventing cracks and breaks in the tile and grout.

The polymer modified thin set provides additional strength and helps eliminate any movement between the backer board and the subfloor. Probably under at the tile layer also. It is generically called cement board or backer board or it can also be referred to by one of the common brand names such as densshield hardiebacker and wonderboard. Backer board is the best substrate for tile.

The primary benefit of cement board is that it doesn t break down or expand or warp if it gets wet. Cement board also provides an additional layer over a plywood or particleboard subfloor adding stiffness to the tile. Cement board is a type of underlayment that is now standard for most tile installations but particularly for floor tile. This is the industry standard most preferred by construction pros when installing ceramic or porcelain tile backer board comes in four foot by eight foot and three foot by five.

July 5 2020 at 5 26 pm. Cement based backer board.