How to Install a Bathroom Mirror: Height, Wall Types and Fixings

Two things decide how a bathroom mirror installation goes: the height it's hung at, and whether the fixings suit both its weight and the wall behind it. Height is a matter of measuring and checking. Fixings are where jobs tend to go wrong, because a plug that holds well in solid brick can be useless in a stud partition, and a tiled surface tells you nothing about what's supporting it.

The method also depends on the mirror. Some hang on brackets or a hanging plate, some are screwed through the frame or held by clips, a few are made for adhesive, and illuminated models bring an electrical connection into the picture.

In short: put the centre of the mirror at roughly eye level for the person who uses it most, choose fixings for your wall type and the mirror's weight, and leave any fixed electrical connection to an electrician. If you haven't picked a mirror yet, our [bathroom mirrors category - link] covers size and style. This guide starts once it's in the box.

What height should a bathroom mirror be hung at?

No single height works for every bathroom. It depends on the size of the mirror, how tall the basin and taps are, and who uses it every day. A 500 mm round mirror over a pedestal basin sits in a different place from a 1,000 mm tall rectangle over a vanity unit with a tall mixer tap.

If you want a number to start from, the centre of the mirror at around 145 to 165 cm from the floor is a commonly quoted range, which is roughly eye level for an average adult standing at the basin. Treat it as a guideline rather than a fixed standard. Someone who is 1.55 m tall will want the mirror in a different place from someone who is 1.90 m.

Here's how to work out where yours should go:

• Start with the fittings below it. The bottom edge should clear the tap spout and any upstand or splashback, with enough of a gap that it isn't taking the worst of the splashes.  
   
• Think about who uses it. If the main users are very different heights, look for a position that works for all of them rather than the one that suits whoever is holding the drill. A taller mirror makes this easier. With a small one it matters more.  
   
• Test the reflection. Ask the main user to stand at the basin as they normally would. Check they can see their face without stretching up or stooping, and that it still works when they lean in close.  
   
• Check the mounting points and clearances. Hanging brackets, hooks or fixing holes aren't always at the top edge of the glass, so the fixings can sit somewhere different from where you'd expect. Look for any minimum clearances in the manufacturer's instructions too, as they can override your preferred height.  
   
• Line it up. Centre it on the basin or vanity unit unless it's meant to be offset, and look at how it sits against the taps, any wall lights, shelves and cabinet doors.

Mark the proposed position lightly before you drill anything. Masking tape works well on tiles and painted walls, and pencil is fine on bare plaster. Put tape at the top, bottom and sides, then step back and check it from where you'd normally stand at the basin. For a large or heavy mirror, mark the bracket positions as well and leave room above for lifting, since many bracket systems involve raising the mirror above its final position before lowering it into place.

Can I install a bathroom mirror myself?

For a standard mirror with no electrical connection, usually yes, provided the wall is sound, you have fixings that suit it and you can lift the mirror safely. Most of the skill is in marking accurately and drilling carefully, not in anything specialist.

Professional help makes sense when:

• The mirror is particularly heavy, oversized or awkward to handle.
• The wall construction is unclear, or you can't be confident it will support the load.
• The mirror calls for specialist mounting, or its instructions say to use a professional fitter.
• The job involves a fixed electrical connection or any change to the bathroom wiring.

Glass is heavier than it looks, and a large mirror is awkward to hold level while someone else lines up brackets. If it's big or heavy, get a second person for the lift and positioning. Handing the job to a fitter is a sensible call if any of the points above apply and you're unsure.

What fixings do I need for my wall type?

The right fixing depends on what's behind the surface you're drilling into, and on the weight of the mirror. Check the wall first, then choose the fixing. The table covers the four most common situations.

Not sure what you've got? Tapping the wall can give you a clue, but it isn't conclusive, because stud walls and dot-and-dab walls can both sound hollow. A suitable stud detector may help identify framing and hidden services, although detectors have limitations. Check the wall construction before choosing your fixings. If you're still unsure what's behind the surface, get advice from a suitable installer rather than drilling an exploratory hole.

Some mirrors are designed for adhesive mounting or arrive with their own brackets. For those, the manufacturer's approved fixing method takes priority over anything generic here. The same goes for fixing packs: the rated load printed on the pack applies to the wall type it names, so compare it with the mirror's weight (usually in the product specification) for the wall you actually have. There's no universal screw size, plug type or weight limit. It all varies with the mirror, the wall and the fixing system.

What tools and materials do I need?

Which of these you use depends on the mounting method and the wall. Few jobs use everything, and the fixing kit supplied with a mirror won't suit every wall.

• Tape measure
• Pencil, and masking tape for marking tiles
• Spirit level
• Drill and drill bits suited to the wall (masonry, tile or general-purpose)
• Stud, cable and pipe detector
• Wall fixings, screws and brackets that suit your wall and the mirror's weight
• Eye protection, plus a dust mask when drilling masonry or tile
• A second person to help with lifting, if the mirror is large or heavy

How do I install a bathroom mirror step by step?

• 1. Read the mirror's fitting instructions Look at the template, bracket arrangement, orientation, weight and fixing requirements before anything else. Confirm how the mirror is meant to be mounted: screws, clips, a hanging plate, adhesive or something else. If the instructions rule out your wall type, or call for a professional, that settles it.  
   
• 2. Choose and mark the position Measure the position you settled on above the basin and mark it with masking tape or a light pencil line. Stand where you'd normally stand at the basin and check the height. Then check how it lines up with the basin, vanity unit, taps and anything nearby.  
   
• 3. Check the wall and locate hidden services Work out what the wall is made of and where the fixing points could go. Then scan the area with a detector for cables, pipes and studs before you drill anything.  
  
  Detectors have limits. Some miss plastic pipes, cables that aren't live or services buried deeper in the wall, and metal framing or foil-backed board can confuse them. Cables often run in straight lines to and from sockets, switches and light fittings, and pipes run to taps and radiators, so be extra wary of the lines above, below and beside them. If you're unsure about a drilling position, stop and investigate. Moving the fixing point or getting someone to check is better than drilling and hoping.  
   
• 4. Mark the mounting points accurately Use the manufacturer's measurements or the supplied template. Measure the actual positions of the hooks, brackets or holes on the mirror rather than the outer edges of the glass, because they aren't always symmetrical. Hold the template or bracket up to check your marks, measure between the fixing points carefully and confirm everything is level with a spirit level. On tiles, mark each point on masking tape rather than directly on the glaze.  
   
• 5. Drill the holes using the correct method The bit has to match the material: a masonry bit for brick or block, a general-purpose bit for timber or board, and a tile bit for tiles. A strip of tape wrapped round the bit at the right depth helps you stop in the right place.  
  
  Through tile, use a suitable tile or ceramic bit, drill slowly with light pressure and follow the bit maker's guidance. Switch the hammer action off while you're going through the tile itself. Once you're through, change to whatever suits the substrate behind it. Hammer action may be suitable for masonry at that point, depending on the substrate and the fixing maker's guidance. Wear eye protection throughout.  
  
  Stop if the tile starts to crack, if the wall behaves unexpectedly (much softer or harder than you expected, or something metallic stops the bit) or if you think you may have met a hidden service. Where to drill in relation to tile edges and joints depends on the tile and the mirror, so follow the manufacturers' guidance rather than a general rule.  
   
• 6. Fit the correct fixings Insert the plugs, anchors, screws or brackets as their instructions describe, including hole size and depth. Tighten until firm and stop there. Overtightening can crack tiles, strip plugs or damage the mirror's mounting hardware. Check that any brackets are level before the mirror goes on.  
  
  The fixing and the wall construction carry the load, not the tile, paint or plaster finish on the surface.  
   
• 7. Hang and secure the mirror With a helper if the mirror is large or heavy, lift it into position using the manufacturer's method. Engage every bracket, hook or fixing, then check that the mirror is secure, level and sitting flat against the wall. If the supplied mounting arrangement doesn't fit your wall, don't improvise one. Stop and check with the manufacturer or the retailer, or ask a professional.  
   
• 8. Complete the final checks Check that the mirror is stable and doesn't rock, and that its edges and frame aren't being pushed or pulled out of shape by the wall or the fixings. Open any cabinet doors and try the taps and other fittings nearby to confirm they work without catching.  
  
  An illuminated mirror is a different case. Any fixed electrical connection, and the checks that go with it, belong to a suitably qualified electrician (see the illuminated mirror section below), so it shouldn't be treated as an ordinary mirror.

How do you fit a bathroom mirror to a tiled wall?

Tiles are a finish. The mirror's weight is carried by whatever is behind them, usually plasterboard, backer board or masonry, so the first job is to find out which. Use the matching row of the fixings table above to choose the fixing, and allow for the thickness of the tile and adhesive when you work out how long it should be.

Marking and drilling are covered in steps 4 and 5, so these are the points particular to tiles:

• Pick a bit for the tile. Softer ceramic often drills with a carbide-tipped tile bit, while dense porcelain usually calls for a diamond-tipped one. Check the bit maker's instructions.
• Fix into what's behind the tile. The mirror's weight shouldn't rest on the tile, so choose a fixing that anchors in the substrate and is long enough to pass through the tile and adhesive first.
• No hammer action through the tile. Once you're through, switch to the method that suits the material behind it.
• Stop if the tile cracks or the wall isn't what you expected.

No technique guarantees a tile won't crack. Tiles that sound hollow when tapped, and holes planned close to an edge, can be more vulnerable, so check the tile and mirror manufacturers' guidance before drilling in those spots.

How do you install an illuminated bathroom mirror?

Think of this as two separate jobs: mounting the mirror on the wall and connecting its electrical supply. The mounting follows the steps above, with a few extra checks. Any fixed electrical connection or alteration to the bathroom wiring should be handled by a suitably qualified electrician. If the mirror has a plug, follow the manufacturer's instructions and make sure the socket is suitable and permitted for that spot in the bathroom. If you can't tell, ask an electrician before plugging it in.

Start with the manufacturer's installation instructions and the product's electrical specification, including its IP rating. Confirm the mirror is suitable for where it will hang. Bathroom electrical zones, set out in the wiring regulations (BS 7671), are based on where the bath or shower is, and they affect what equipment can go where. IP ratings vary between mirrors, and a rating that suits one position isn't automatically right for another, so check rather than assume. An electrician can confirm what's suitable for your layout.

Hanging the mirror is an ordinary fixing job, though it's worth checking where its cable or connection point sits, because that can affect both the mirror's position and where the supply comes from. A fixed connection, or any addition to or alteration of the bathroom wiring, is electrical work for a suitably qualified electrician. It often makes sense to have them fit the mirror and make the connection in the same visit, so the mirror's position and the supply are settled together. This guide doesn't cover mains wiring, and that's deliberate.

Depending on the model, features such as lighting, demister pads and shaver sockets may have different electrical requirements, so follow the mirror's own installation instructions. If you're still choosing, our [illuminated bathroom mirrors category - link] sets out the options. Check the IP rating and specification against where the mirror will hang.

What mistakes should I avoid when hanging a bathroom mirror?

• Choosing fixings by looks or by a generic kit. The wall type and the mirror's weight should decide.
• Assuming plasterboard alone will carry any mirror. It won't, particularly on a heavy one.
• Drilling before checking for hidden pipes and cables. A detector helps, but doubt about a spot is a reason to stop.
• Measuring the mirror instead of its mounting points. The hooks or holes are what have to line up with the wall.
• Using adhesive the mirror manufacturer hasn't approved. Weight, damp and the mirror's backing all come into it.
• Tightening fixings until the glass or tiles are under stress. Firm is enough.
• Attempting electrical work without the competence for it. Leave fixed connections and wiring changes to an electrician.