Do You Use Backerboard For Bathroom Floor Tile

Nobleseal ts is one example.

Do you use backerboard for bathroom floor tile. Never install new tiles over existing tiles or onto an unprotected wood or plywood floor. Unlike wood or drywall sub surfaces cement backerboard will not rot warp or grow mold and mildew when exposed to water. With the plywood in place install the backer board as you normally would. 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.

It is made of cement water silica limestone flour and fibers such as kevlar or fiberglass for increased strength. Backer board is usually a simpler way to go than plywood. Alternatively instead of backer board you can use two layers of plywood topped with a waterproof uncoupling membrane which is a lightweight plastic underlayment that allows independent movement between the tile and the plywood to prevent cracks in the tiles and grout. If you don t allow the mixture to slake it won t stick to tiles or backer board.

Required tools for this project. To avoid building up the floor too high you can use 1 4 in thick backer board instead of 1 2 in. Cement backer board is a mineral based pre fabricated wall unit usually 1 4 inch or 1 2 inch thick and 3 feet by 5 feet long. Some homeowners believe that painting or priming plywood will render it suitable to use as shower tub backer board.

It is also used in shower and tub enclosures or anywhere with significant wetness issues as a means of helping to create a moisture barrier. This is not true. It is used on flooring installations as a means of creating a stable and easier to work with subfloor. Have the necessary tools for this diy project lined up before you start you ll save time and frustration.

This guide will teach you how to properly lay cement backerboard and use mortar to secure and level your subfloor before installing tile. The membrane would have to be a crack isolation membrane a118 10 and also a waterproofing membrane. Slaking time may vary by brand so be sure to read and follow the manufacturer s instructions. Make sure to tape the seams and corners of the backer board according the manufacturer recommendations.

Here s how to choose the best tile backer board for your project. Doesn t deteriorate when wet. Otherwise you could use a membrane over the backer board walls similar to how you would go over a concrete floor that has cracks in it. Backerboard or cement board comes in sheets much like drywall and is used in a couple of ways.