Squaring Corners Made Easy – Simple Tips for Perfect Tiles

When you start a tiling job, the first thing that can trip you up is getting the corners square. A crooked corner makes the whole room look off, even if the rest of the work is spot on. The good news? You don’t need fancy tools or a degree in engineering. With a few easy steps you can line up walls, measure accurately, and cut tiles so they fit like a puzzle.

Why Squaring Corners Matters

Square corners keep the visual flow of the room. They help grout lines stay even and prevent gaps that let water seep in. If the corner is out by just a few millimetres, every tile after it will drift, and you’ll end up with a lopsided look. That’s why a quick check with a carpenter’s square or a line level at the start saves you time and money later.

Step‑by‑Step Guide to Square Every Corner

First, snap a tight chalk line along the longest wall. Use a 45‑degree square to extend the line onto the adjoining wall – this is your reference line. Measure the distance from the line to the opposite wall at several points; any variation means the walls aren’t true. If they’re off, use shims or a thin backer board to level the surface before you lay the first tiles.

Next, lay a starter row of tiles along the reference line, leaving a small gap for expansion. Check the angle with a framing square; it should read 90 degrees. If it’s a little off, adjust the tiles with a slight push or pull until the line is straight. Once the first few tiles look good, you’ve set the pattern for the whole room.

When you reach the corner, measure the exact space left and transfer that measurement onto a new tile. Use a tile cutter or a wet saw for a clean cut – a straight cut is easier than a diagonal one. If the space is odd, consider a small trim piece or a decorative corner tile to hide any tiny mismatch.

After the tiles are set, fill the joints with grout and wipe away excess. Watch the corners closely; any unevenness shows up fast. A quick tap with a grout float smooths out the lines, and a damp sponge cleans the surface without pulling grout out of the seams.

Common mistakes include forgetting to check wall plumb, using the wrong size spacer, or cutting tiles too short. Double‑check your measurements, keep your spacers consistent, and always dry‑fit tiles before you commit. A little patience at the start means a flawless finish that lasts years.