installing backerboard on non square wall

Old 01-14-00, 08:03 PM
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We are in the process of installing backerboard above our tub, and just found out that one of our walls is not square. Do you have any good suggestions on the best way (and easiest) to tackle this? Will this also effect how are tile will look?
Old 01-15-00, 07:34 AM
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Hi CindyC:

Finding a wall that isn't square doesn't surprise me in the least. Remember, the finished product is only as good as the base. With the wall out of true, your tiles in the corner will have to follow the line of the wall. Depending upon your ability, you may want to true up the offending wall. This may turn into a major project, but the finished product will be much better. Before we go any further, which is the wall that is off?


Carpenter's rule:- Cut to fit - Beat into place :-)

Old 02-10-05, 10:29 AM
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There are no square walls. You did not say how far out of square your walls are. Walls in a bath area that are out of square may be tiled to look great by choosing the right tile. A back wall with a nominal finished width of 59" where a wall is 1/2" out of square may be tiled with 6x6 tiles in a regular square pattern with the tile centerd on the wall. This will result in the outside tiles being trimmed to between 5x6 and 5.5x6, or 5x6 and 4 1/4x6. Ten inch tiles may be used so that the tile cut from each end tile is proportionally no as great. Different tiling patterns hide out of square imperfections better than others. Larger tiles ( 16 x 12 ) may be used in a brick pattern on the back wall and end walls and may be cut to hide out of square walls. This size tile works well provided the bath area is not more than 32" wide. Rogerb

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