The industry standard is to use 1 2 inch thick backer board on wall tile installations such as a tub surround.
													
																	Size hardee backerboard for wall tile. 
									
	
		
	
																	Tile needs to be installed on a backer board to keep the assembly stiff otherwise the assembly will flex at the grout joints allowing water to seep behind the tile and rot the substructure. 
																	Doesn t deteriorate when wet. 
																	Tile requires a structurally sound sturdy foundation and plywood alone is unsuitable. 
																	Hardiebacker cement board is made better to install better and perform better. 
															
													
									
	
		
	
																	Works under interior floors to provide a solid foundation for tile vinyl wood and other flooring. 
																	James hardie hardiebacker 1 4 in. 
																	Cement based backer board stabilizes the plywood substrate and provides a flat even surface for tile. 
																	Cement board will also work as a countertop backerboard and underlayment for tile granite and other stone surfaces. 
															
													
									
	
		
	
																	Cement backer board comes in two standard thicknesses 1 2 inch and 1 4 inch. 
																	It is made of cement water silica limestone flour and fibers such as kevlar or fiberglass for increased strength. 
																	Here s how to choose the best tile backer board for your project.