What You'll Need

Before you begin, gather all necessary tools and materials. Proper preparation makes installation significantly easier and ensures a professional result.

  • Mirror tiles (plus 10–15% overage)
  • Mirror adhesive (mastic) or double-sided mirror tape
  • Spirit level
  • Tape measure and pencil
  • Tile spacers (if grouting)
  • Notched trowel or adhesive spreader
  • Grout (optional — many mirror tile installs are left ungrouted)
  • Rubber mallet or hand pressure pad
  • Safety gloves and eye protection
  • Tile cutter or glass cutter (for edge tiles)

Step 1: Prepare the Surface

A flat, clean, and dry surface is essential. Mirror tiles will not adhere well to dusty, damp, or uneven walls. Follow these steps:

  1. Remove any old tiles, wallpaper, or flaking paint.
  2. Fill any holes or cracks with filler and sand smooth once dry.
  3. If the wall is painted, lightly sand the surface to improve adhesion.
  4. In bathrooms or damp areas, apply a moisture-resistant primer or use a marine-grade adhesive.

Important: Do not install mirror tiles directly onto standard drywall in bathrooms without proper waterproofing. Use a cement board or waterproof membrane behind the tiles in wet areas.

Step 2: Plan Your Layout

Planning saves you from costly mistakes. Dry-lay your tiles on the floor first to visualise the pattern and identify how many edge cuts you'll need.

  1. Find the centre of your wall and mark it with a pencil.
  2. Use a spirit level to draw a horizontal reference line at the midpoint.
  3. Plan the layout so cut tiles are at the edges (and ideally equal on both sides) for a balanced look.
  4. Consider whether you want grout lines or a tight, seamless look.

Step 3: Apply the Adhesive

Choose the right adhesive for your tile type and wall surface. Mirror mastic is the most widely used option for glass mirror tiles. Avoid standard tile adhesive (cement-based) as it can damage the silver backing of mirror tiles over time.

  • Apply adhesive to the back of each tile in small blobs or a serpentine pattern — do not spread it fully across the back, as this can trap air and cause tiles to pop off.
  • Alternatively, use double-sided mirror mounting tape for lighter tiles and smoother walls.
  • For heavier tiles, use a combination of adhesive and mechanical fixings (mirror screws or clips) for safety.

Step 4: Set the Tiles

  1. Start at your reference point (centre of the wall) and work outward.
  2. Press each tile firmly against the wall, applying even pressure across the entire surface.
  3. Use a rubber mallet and a soft pad to tap tiles gently into position — never strike glass directly.
  4. Use tile spacers if you want consistent grout lines.
  5. Check level frequently — mirror tiles amplify any misalignment because the reflections will make it obvious.

Step 5: Cutting Edge Tiles

Edge tiles that need cutting require care. Use a glass cutter and straight edge for straight cuts, or a wet tile saw with a diamond blade for more complex shapes. Always wear safety gloves and eye protection when cutting glass tiles. Score firmly, snap cleanly, and polish any rough edges with a wet diamond hand pad.

Step 6: Grouting (Optional)

Many mirror tile installations look best without grout — a tight joint gives a sleek, seamless appearance. If you do grout:

  • Use unsanded grout for joints under 3mm.
  • Choose a colour that complements your tiles — silver, white, or black are most popular.
  • Apply carefully and wipe off excess immediately. Grout can etch glass if left too long.
  • Seal the grout once dry to prevent staining.

Step 7: Finishing and Cleaning

Once adhesive has cured (usually 24–48 hours), remove any tile spacers and clean the surface with a non-ammonia glass cleaner. Ammonia-based cleaners can damage the mirror backing over time. A microfibre cloth leaves a streak-free finish.

Safety Reminders

  • Always wear gloves when handling cut glass tiles.
  • In high-traffic areas or homes with children, consider safety-backed mirror tiles (with a film that holds fragments together if broken).
  • For tiles installed above head height, always use mechanical fixings in addition to adhesive.