Overview

A tiled backsplash is a hard, easy-to-wipe wall covering installed between the countertop and upper cabinets (or in a bathroom behind a sink), typically made of ceramic, porcelain, glass, or stone tile set in adhesive and finished with grout. It's a realistic weekend project for a homeowner who is comfortable measuring carefully, working with basic hand tools, and being patient through a multi-stage, multi-day process rather than rushing it in one sitting.

Tools & materials

  • Tile of your choice (sheet-mounted mosaic or individual tiles)
  • Tile spacers
  • Notched trowel (size matched to your tile)
  • Putty knife or margin trowel
  • Thinset mortar or premixed tile mastic/adhesive
  • Grout (sanded or unsanded, matched to your joint width) and grout float
  • Tile caulk for the countertop seam and inside corners
  • Tile cutter, wet saw, or tile nippers for cuts
  • Level and tape measure
  • 1x2 ledger board (optional, to support the first row)
  • Drill with mixing paddle attachment
  • Sponges and buckets for cleanup
  • Painter's tape and drop cloths to protect countertops
  • Safety glasses, work gloves, and a dust mask or respirator
  • Outlet/switch box extenders sized for your tile thickness
  • Non-contact voltage tester

Steps

  1. Measure the wall area and sketch the layout on paper (or graph paper) so you know how many tiles you need, including 10-15% extra for cuts and waste, and where any cut pieces will fall.
  2. Clear the counters, remove any switch/outlet cover plates you'll be tiling around, and cover countertops and cabinets with drop cloths and painter's tape.
  3. Clean the wall thoroughly to remove grease and dust, then patch, sand, and level any rough or damaged drywall so the surface is flat and dry.
  4. Mark a level horizontal reference line above the counter (using a level or a temporary ledger board) and, if needed, a plumb vertical centerline so your pattern stays straight and symmetrical.
  5. Dry-fit a row or two of tile along the layout lines to check spacing, pattern, and where cut pieces will land, adjusting the starting point so you avoid tiny slivers at the edges.
  6. Mix thinset (or use premixed mastic) and spread a thin layer on the wall with the flat side of a trowel, then comb it with the notched side at a consistent angle.
  7. Press tiles into the adhesive, working from your reference line outward, inserting spacers between tiles to keep grout lines even and checking regularly with a level.
  8. Cut tiles as needed for edges, corners, and outlets using a tile cutter, wet saw, or nippers, dry-fitting each cut piece before it goes on the wall.
  9. Let the adhesive cure for the time listed on the product (often 24 hours) before grouting.
  10. Mix grout to a thick, peanut-butter-like consistency and pack it into the joints with a rubber grout float held at roughly a 45-degree angle, working diagonally across the tile.
  11. Wipe off excess grout with a damp sponge, rinsing frequently, then buff away the remaining haze with a soft cloth once it dries.
  12. After the grout cures (check product instructions), caulk the countertop seam and any inside corners instead of grouting them, since these joints need to flex.
  13. Reinstall outlet/switch box extenders and cover plates once everything is fully cured.

Safety warnings

  • Turn off power to the outlets/switches at the breaker (and confirm with a non-contact voltage tester) before removing any cover plates or tiling near them, even though this is a tiling task and not electrical work.
  • Dry-cutting ceramic, porcelain, or stone tile creates fine respirable silica dust, which OSHA identifies as a serious inhalation hazard; cut tile wet on a wet saw whenever possible, or wear a properly fitted dust mask/respirator (not just a paper mask) and work in a ventilated area if dry-cutting is unavoidable.
  • Wear safety glasses and cut-resistant gloves when scoring, snapping, or nipping tile — edges and shards are sharp.
  • Wear hearing protection when running a wet saw or angle grinder for extended periods.
  • Keep the work area dry underfoot when using a wet saw to avoid slipping, and keep water away from any live electrical components.
  • Ventilate the room when mixing thinset, mortar, or grout, and when using adhesives, since dust and fumes can irritate lungs and eyes.
  • Do not use the stovetop, sink, or affected countertop area until adhesive and grout have fully cured per the manufacturer's instructions.

When to call a pro

  • You need to move, add, or rewire an outlet, switch, or light fixture — that's electrical work for a licensed electrician.
  • The wall behind the tile shows signs of water damage, soft/spongy drywall, or mold when you remove old tile or backsplash.
  • You're tiling a large area (full wall, floor-to-ceiling) or working with heavy natural stone slabs that are difficult to handle solo.
  • The wall is significantly out of level or plumb and needs structural correction before tile will lie flat.
  • You discover the wall was tiled directly over plumbing or gas lines that need to be relocated.
  • You want a warranty on workmanship for a kitchen remodel tied to a home sale or insurance claim.

Cost estimate

Roughly $150-$600 DIY for a typical kitchen backsplash (tile, thinset, grout, tools), versus $600-$1,500+ if hiring a professional for labor and materials.

Sources