Tile Installation Using the Ashlar Method
Calculate the border tile sizes for the room and install the furring strips according to the normal instructions. Snap a chalkline
at the border measurement down the center of the second furring strip as directed.
If the calculated border on the end wall is less than 9 inches, add 3 inches to it.
The border perpendicular to the furring strips will be 7" (take the 8", add 12", divide by 2 and add 1/2"). But that is less than 9", so you add 3"
to the 7" to make 10". Add 1/2" for the stapling flange. Snap a second chalkline at a right angle to the first one 10-1/2" in from the end wall.
Now measure 6" closer to the wall from the second chalkline and snap a third chalkline parallel to the second.
Now refer to the figure below for the suggested sequence of installing the tiles. When you see how the tiles line up with
the chalklines in the figure, and you understand how they are used to line up the tiles in an offset fashion, the exact sequence
does not have to be followed to the letter.