Hanging a Mirror in a Bathroom: Tiles, Damp and Fixings
How to hang a bathroom mirror on tiles or painted walls, with advice on damp, adhesive versus screws, safe positions and keeping clear of electrics.
Bathrooms are the hardest place to hang a mirror. Tiled walls, steam, splashes and restricted positions near the sink and electrics all complicate what would otherwise be a simple job. A little planning avoids cracked tiles, rusted fittings and a mirror that peels away from the wall.
Choose the position first
- Hang it so the centre is around eye level of the main user, which is typically near 150 to 160 cm from the floor.
- Leave a sensible gap above the basin so taps and splashes do not reach the frame.
- Keep clear of bathroom lights and any shaver socket. Electrical safety in bathrooms is based on zones around the bath and shower; do not move or add sockets or lights without a qualified electrician.
- Check the wall behind for pipes, particularly if there is a boxed-in section.
Read how to find studs, pipes and cables before drilling before marking holes.
Fixing methods
Screws and plugs through tiles
This is the most secure method for heavier mirrors, and requires care. You will need a tile drill bit, masking tape and patience. Drilling into tiles without cracking them explains the technique.
Once through the tile, switch to a masonry bit for the wall behind, and fit plugs. Use stainless steel or corrosion-resistant screws, and cover the heads with caps.
Adhesive
Mirror adhesive and mounting tape suit lighter mirrors and rented homes, but moisture and heat reduce grip over time.
- Clean and degrease the wall before sticking.
- Check the adhesive is suitable for damp rooms and for the weight of the mirror.
- Give it curing time before removing any temporary supports.
Never use ordinary double-sided tape on heavy glass.
Mirror clips or J-channels
Frameless mirrors are commonly held by clips at the base and edges. Space them evenly, with the weight carried by the bottom clips. Plastic or metal buttons hold the sides.
Back-fixed cabinets and bathroom cabinets
If the mirror is a cabinet, fix it through the back panel into studs or masonry, with the correct cavity fixings for hollow walls.
Damp and ventilation
Moisture can creep behind a mirror, damaging the silvering at the edges and encouraging mould. Leave a small gap at the back for air movement where possible, and use an extractor fan. Seal any holes through tiles with a bathroom sealant to keep water out of the wall.
Mirror weight and size
Large bathroom mirrors can weigh as much as a living room mirror. How to hang a heavy mirror safely covers weight checks and lifting.
Step by step
- Mark the height with masking tape.
- Level a pencil line and mark the fixing holes.
- Scan for pipes and cables.
- Drill through the tile with a tile bit, using low speed.
- Switch to a masonry bit and drill into the wall.
- Insert plugs and screws, tightening just snug.
- Hang or clip the mirror with a helper, and check level.
Mistakes to avoid
- Drilling at full speed and cracking the tile.
- Using plain steel screws that rust.
- Hanging above the basin with no consideration of splash.
- Putting a heavy mirror on tile adhesive alone.
- Moving electrics without a qualified person.
A worked example: a 60 x 80 cm mirror above a basin
Mark the centre of the basin, then mark the mirror's height so the bottom edge sits a few centimetres above the taps and the top is around eye level for the tallest user. Use a spirit level on the wall, tape a template and drill through the tiles with a tile bit before the masonry bit. Use plugs rated for damp, screws in stainless steel or a similar corrosion-resistant finish, and caps or sealant to stop moisture getting behind the glass. Allow about 30 to 45 minutes.
Bathroom-specific points
- Zones. Electrical equipment, including lit mirrors and shaver sockets, is subject to strict rules in bathrooms; use an appropriately qualified electrician for fixed wiring.
- Condensation. Plastic spacers behind a mirror allow air flow and reduce mould behind the glass.
- Weight. Large mirrors can weigh more than expected; consider two people and check the fixings.
- Edges. Glass edges can chip when handled or when they bump tile.
Mistakes to avoid
- Drilling over a stud or pipe without checking.
- Using standard steel screws that rust.
- Choosing an adhesive not rated for damp areas.
- Resting the mirror on a basin or tap ledge while marking.
See drilling into tiles without cracking for a technique guide for the drilling stage.
Cleaning and maintenance
Wipe condensation from the glass and surround regularly, and check fixings and sealant a few times a year. Black spots on the edge of the silvering indicate moisture getting in, which means the sealing or ventilation needs attention.
Frequently asked questions
Can I hang a mirror on tiles without drilling?
Yes for light mirrors, with adhesive strips or mirror adhesive designed for tiles. Heavier ones are safer with screws into the wall.
How high should a bathroom mirror be?
The middle of the mirror around eye level, usually 150 to 160 cm from the floor, adjusted for who uses it most. Above a basin leave a little clearance from the taps.
Are there rules about lights and sockets near a bathroom mirror?
There are safety zones around baths, showers and basins, and only certain fittings are allowed in each. Leave any electrical change to a qualified electrician.