What's the best way to remove and replace a single damaged subway tile on a Calgary kitchen backsplash?

Removing and replacing a single subway tile is a manageable DIY repair that most Calgary homeowners can handle with the right tools and patience. The key is working carefully to avoid damaging surrounding tiles, especially in Calgary's dry winter climate when grout becomes more brittle.

Start by removing the grout around the damaged tile using a manual grout removal tool, oscillating multi-tool with a grout blade, or a grout saw. Work slowly and keep the tool angled away from adjacent tiles to avoid chipping their edges. Calgary's low winter humidity (15-20% indoors) makes grout harder and more brittle, so it may come out in larger chunks than expected. Remove all grout from the four sides of the damaged tile before attempting to extract it.

Once the grout is cleared, carefully break out the tile using a hammer and cold chisel or a rotary tool with a cutting disc. Start from the center and work outward to avoid putting pressure on surrounding tiles. Wear safety glasses — tile fragments can be sharp. After removing the tile pieces, scrape away the old thinset from the wall surface using a putty knife or chisel. The substrate should be clean and level before installing the replacement tile.

For the replacement tile, use a high-quality polymer-modified thinset rather than pre-mixed mastic, even for this small repair. Apply thinset to the back of the new tile (back-buttering) with a small notched trowel, ensuring full coverage. Press the tile into place, checking that it's flush with surrounding tiles. Use tile spacers or wooden shims to maintain consistent gaps while the thinset cures.

Calgary's extreme dryness affects small repairs significantly — thinset and grout cure too quickly in low humidity, which can weaken the bond. Lightly mist the substrate before applying thinset, and consider covering the fresh repair with a damp cloth for the first few hours to slow the cure rate. Wait 24 hours before grouting to ensure the thinset has properly set.

When grouting the repair, use unsanded grout for subway tile (which typically has 1/8-inch joints) and work it into all four sides of the new tile. Clean excess grout immediately with a barely damp sponge, working diagonally across the tile face. In Calgary's dry climate, mist the fresh grout lightly and avoid over-cleaning, which can pull grout out of the joints before it fully cures.

This repair requires basic tools — grout removal tool ($15-25), replacement tile (usually $2-5 per piece), small bag of thinset ($8-12), and matching grout ($5-10). The total material cost is typically under $50, making it much more economical than hiring a professional for a single tile replacement.

Consider hiring a professional if you're uncomfortable with power tools, the damaged tile is part of a larger pattern that requires precise alignment, or if removing the damaged tile reveals substrate problems like water damage or loose drywall that needs repair before retiling.