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Installing Floor Tile Backer Board

When you decide to lay tile in your home, installing floor tile backer board is important. Through installing floor tile backer board, you set up your tiling project to turn out beautifully. Not only that but it will last a great deal longer than if you skip this part of the installation process. There are several important steps for installing floor tile backer board that are good to keep in mind.

The first thing to realize is that installing floor tile backer board enables you to have a solid base for placing your tiles. Tiles are less likely to sink through the years and will withstand high traffic, heavy furniture and other uses much better after installing floor tile backer board to lay them on initially. Even though the process is a little time consuming, it is important not to skip it.

First Steps

The first step for installing floor tile backer board is to go ahead and measure your room.

You will then want to cut the backer board prior to starting the actual tiling part of the job. The backer board will be placed over the sub-floor and the joists.

Mortar Mix

Once you have completed cutting the backer board, mix a solution of thin-set tile mortar and acrylic admixture. Read the directions on the thin-set tile mortar for mixing and substitute the acrylic admixture instead of water for the mortar compound.

Mix very well together to make certain that everything in the bucket is well blended. It is highly recommended that you purchase a mixing paddle for this project to have the entire compound evenly mixed.

The next tool for installing floor tile backer board is a one-quarter inch square-notched trowel.

Spreading Mortar

Take the mortar and admixture compound that you made in the previous step and spread it evenly over the entire subfloor. It is easiest to work in section. Apply extra compound where it is needed to fill in gaps, grooves and other indentations in the sub-floors.

Work quickly and use the notched side of the trowel to create grooves in the mortar compound bed.

Placement of Backer Board

Next, place the backer board on top of the mortar base. You should only work in sections that are the same size as the backer board to prevent walking through the mortar base to lay the backer board on top.

The backer board should be walked on to make certain that it is resting well in the mortar bed.

Using cement screws affix them to the board and joists every six to eight inches. The screws should be tightened into the backer board until they are slightly lower than the actual board. This will prevent ruts in the project. Repeat the procedure for installing floor tile backer board until all the backer board is laid.

Cover the seam areas with fiberglass mesh tape and coat with a thin layer of the mortar compound you mixed earlier. Use chalk for making the base line to follow for laying your tiles. Allow 24 hours to cure and then you are ready to lay the tiles. Depending on the size of the room, it typically takes about half an afternoon for installing floor tile backer board.