Installation Guide

REV 11.14.2019

INSTALLATION FOR TILE

SQUARE 18”x18” TILE

Layout of the Room for Squarely Laid Fields

To square the area to be covered, first find the center of one end of the main

rectangle. Locate the same point at the other end wall. Snap a chalk line

between these points to mark the center line on the floor. Then measure

along this center line to find the middle of the room.

Figure 1

At the center point, mark off a line across the room at exactly right angles to

the first line. This may be accomplished by the 3-4-5- triangle method as

shown in Figure 1. Then measure 4 feet toward each side wall from the

center point. Then measure 3 feet from the center point along the longer

line, measure exactly 5 feet from the 3-foot mark on the center line to the 4-

foot mark on the crossline. If the 5-foot measurements do not come out

exactly 5 feet, the center crossing lines are not at a true right angle. For large

rooms, multiples of the above dimensions may be used to obtain greater

accuracy (6-8-10 or 9-12-15, etc.).

Dry-lay a row of tiles from the center line to the side wall to determine the

space left for the borders. If the resulting border is too small, move the

starting point over a half tile width so that it straddles the center line. Repeat

the same procedure lengthwise of the room. (This can readily be figured out

from the room dimensions without putting down the tiles if desired.)