Install Subway Tile Backsplash

Category: Tile · Difficulty: Intermediate · Time: 5.2h · Estimated cost: $220

Tools needed

Prep wall
Wash wall with TSP solution to remove grease. Mark a level horizontal line at one tile height up from the counter — your starting line.
Duration: 30 min
Dry-fit center
Find the visual center of each wall section. Lay out tiles dry on the counter to check for slivers at edges; shift starting point if needed.
Duration: 20 min
Spread mastic
Using the notched trowel, spread enough mastic for ~3 sq ft. Hold trowel at 45°; combs leave even ridges.
Duration: 15 min
Set tiles
Press tiles in place along the level line. Insert spacers between each. Work outward and up. Tap with rubber mallet to set evenly.
Duration: 1h 30m
Cut edge tiles
Measure and score full tiles with the cutter, snap off. Around outlets, score the cuts with a wet saw or rotary tool.
Duration: 1h
Let mastic cure
Wait 24 hours before grouting.
Duration: 5 min
Grout joints
Mix grout per package. Push diagonally across joints with a rubber float. Wait 15 min, then wipe haze with damp sponge in circular motion.
Duration: 1h
Final caulk and seal
After 24 hours, run silicone caulk where the tile meets countertop, cabinets, and outlets — never grout these joints, they will crack.
Duration: 30 min

Wear safety glasses when cutting tile — chips fly.
Tile dust is silica — wear an N95 mask if cutting more than a few tiles indoors.
Shut off and tape over any electrical outlet covers in the work area.

Backsplashes that wrap around windows or hoods with custom angles, or any natural stone tile, deserve a pro tile setter.