With traditional tile that is less than 15 x 15 there can be up to a 1 4 variance in the substrate over a 10 span.
Setting large wall tiles.
Mark a horizontal line along the bottom of the wall coming up from the floor by the height of your tile plus one quarter inch.
For tile with at least one edge greater than 15 the american national standards institutes ansi recommends a maximum variance of 1 8 over a 10 span and 1 16 over a 24 span.
Keep the tiles in a.
Instead bring it up to about 3 4 of the height of your tiles.
A batten board is nothing more than a 1 x4 or 1 x2 board screwed directly into the wall horizontally.
Don t start it at the floor.
Try to achieve a full tile height above the side of a bath worktop.
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So if you re dealing with four inch tiles your batten board would start three inches off the floor.
So if the tiles are 10 inches high the line should be 10 25 inches off the floor.
Set the tiles evenly about a horizontal feature window basin etc.
Where a recess is more than one tile deep have a complete tile on the front edge.