How To Install Cement Backer Board On Floor

Cement board screws spaced every 4 in.

How to install cement backer board on floor.

Embed the cement board and screw it to the underlayment with special 1 1 4 in. Unlike wood or drywall sub surfaces cement backerboard will not rot warp or grow mold and mildew when exposed to water. Then spread thinset mortar with the flat side of a 1 4 in. Cement board is a type of underlayment that is now standard for most tile installations but particularly for floor tile.

This guide will teach you how to properly lay cement backerboard and use mortar to secure and level your subfloor before installing tile. Cement board also provides an additional layer over a plywood or particleboard subfloor adding stiffness to the tile. The primary benefit of cement board is that it doesn t break down or expand or warp if it gets wet. Floor tiles should be installed over smooth flat surfaces.

This is a distinct advantage over plywood and drywall. Notched trowel and use the notched edge to comb the mortar. Never install new tiles over existing tiles or onto an unprotected wood or plywood floor. Cement board commonly sold under trade names such as durock hardiebacker and wonderboard is now the standard underlayment used for ceramic porcelain or stone tile laid with thinset mortar adhesive cement board is used for most floor tile and has all but replaced plywood and drywall backer materials for wall tile applications in wet areas like showers and tub surrounds.

How to install a cement backer board over a plywood subfloor in the bathroom. Ceramic tile and natural stone tile installations require some type of a cement based surface for a long term.