How to Install Carpet Tiles

Snap chalk lines between midpoints of opposing walls. Like other tiles, carpet tiles are laid out and installed from the centre of the room. Find the midpoints of the walls, and snap a line between the midpoints on opposite walls. The lines will cross in the centre of the room. To make sure the lines are square with each other, check for square with a 3-4-5 triangle. Measure 3 feet from the centre point along one line and 4 feet from the centre point along the other line. The lines are square if the points are 5 feet apart. Move the end of one line to make any necessary corrections.

Make sure the tiles that meet the wall will be at least half a tile wide. Lay tiles along the layout lines without applying adhesive. Stop laying tiles at the last full tile before the wall. If the space between the tile and the wall is less than half a tile wide, reposition the line parallel to the wall. Move the line by the width of a half tile in either direction, keeping it parallel to the original line. The resulting tiles will be wider at the wall, but will still be equally sized on opposite sides of the room.

The pile will lean in a particular direction on each tile, and an arrow on the back tells you which way. Any two tiles with pile facing in different directions will look to be slightly different colours. Depending on the carpet, you will lay the arrows in the same direction, turn every other one 90 degrees, or lay the arrows randomly. Follow the manufacturer's directions. In this case, every other tile is turned 90 degrees to create a checkerboard pattern.

One by one, peel off the backing, and put the corner of a tile in one of the corners formed by the layout lines. Put a tile in the corner of each quadrant, so that the tiles form a square. The next group of tiles will be laid in a square surrounding the one you've just laid.

Lay a square surrounding the first square. Work along the layout lines and lay a tile against each edge of the square already in place. Remove the backing one tile at a time. Pay attention to the direction of the arrows, and lay the tile in the pattern recommended by the manufacturer. Always nestle a tile tightly against the corner created by neighbouring tiles. Lay the starting corners of the second square. The tiles you have laid so far have left a void in each corner of the square. Lay tiles to fill in the corners, nestling the tile tightly against its neighbours. Lay a third square, and work your way to the wall. Lay tiles around the square you just laid to create a stair-step pattern. Start at the layout lines and work along the edge of the tiles already laid. Once you've laid the stair-step pattern, fill in each of the steps with a single tile, which creates a second and larger stairway. Continue filling the steps with tiles, working your way to the wall.

The tiles next to the walls will probably need to be cut to fit. Measure the space between one of the tiles and the wall at the two corners of the tile nearest the wall. Draw a matching layout line on the back of a new tile. Cut along the line with a utility knife guided by a straightedge. Lay the tile, and repeat the process until you've laid all the tiles. Once all the tiles are down, roll the floor with a 75-pound floor roller to seat the tiles in the adhesive.