How High to Tile a Bathroom: 1.2m Line vs Floor to Ceiling

How high to tile a bathroom comes down to one question per wall: does water hit it? Shower walls get wet every day and should be tiled floor to ceiling. The bath, basin and toilet walls only take splashes, so tiling them to about 1.2m and painting above with a bathroom emulsion is a sound, cheaper finish. No law sets a tiling height. What makes the difference is planning the rows so the top course lands on a whole tile at a level that lines up across the room.

Below is the wall-by-wall answer we give customers around Bromley, with the measurements behind it and the setting-out trick that stops a half-height scheme looking like the tiler ran out of tiles.

The short answer, wall by wall

Walk-in shower or shower enclosure: floor to ceiling on every wall the spray can reach. Mira Showers gives 200cm as the average shower head height and recommends fitting the head at least a foot above the user’s head, so in a room with a 2.4m ceiling there is very little wall left above the spray anyway.
Shower over a bath: full height on the wall the shower faces and along the length of the bath, including the wall at the tap end if the screen does not cover it.
Bath with no shower: a tiled band above the rim. A standard UK bath is 51cm high according to Mira, so a 1.2m line gives you roughly 70cm of tiles above the rim, enough for bath-time splashing.
Basin wall: to the same 1.2m line, or at minimum a splashback that rises well above the taps. Mira puts the standard basin height at 80cm to 85cm, so 1.2m leaves 35cm to 40cm of tile above the rim.
Toilet wall: 1.2m to match the rest, or not at all. Behind a WC, tiles are about wiping clean rather than keeping water out.
Window and door walls: follow the room’s line. Stopping the tiles at the window sill height can work if the sill sits close to 1.2m.

Floor to ceiling vs half height vs door height

There are three common schemes, and each has a place.

Diagram of bathroom tiling heights: shower walls floor to ceiling, bath, basin and WC walls tiled to 1.2m with paint above — Tiling heights by wall in an example room with a 2.4m ceiling, using Mira’s average shower head, bath and basin heights | Graphic by Bromley Tilers

Half height, about 1.2m

The traditional British bathroom. It covers the splash zone around the basin, bath and toilet and roughly halves the tile area compared with going to the ceiling. The painted band above lets you change the colour later without touching the tiles. It suits rooms with no shower, cloakrooms and period houses where a dado line already exists.

Door height, about 2m to 2.2m

Tiling to the top of the door frame gives a strong horizontal line around the room and keeps a narrow painted strip below the ceiling. It works well when the ceiling is uneven or sloping, since you avoid cutting a row to follow a wavy line at the top.

Floor to ceiling

The most hard-wearing option and the one that looks most finished in a small room, because there is no break line to cut the walls in half. It is the right choice for shower rooms, ensuites and any bathroom where steam regularly runs down the walls. It costs more in tiles, adhesive and labour, and the top row usually needs cutting to the ceiling unless your heights happen to work out.

Tile the shower area to the ceiling, and tank behind it

Shower walls are the one place where height is not a style decision. Spray, steam and water running off a body reach well above the head, and rainfall heads are often fitted in line with the ceiling, as Mira notes in its bathroom fixtures height guide. A tiled band that stops at 1.8m leaves bare plaster or paint in the wettest part of the room.

Tiles and grout are not waterproof on their own. The British Standard for wall and floor tiling, BS 5385-1:2018, recommends that in wet areas such as showers, wet rooms and steam rooms the backing is protected with a proprietary tanking membrane system. We tank shower walls to the full height we tile, and on a shower over a bath we take the membrane the full length of the bath. Our tanking guide covers the products and the order of work.

Two other heights matter in a shower. Mira says most shower mixers and valves sit 75cm to 100cm above the floor, so plan the tile layout around the valve plate rather than cutting a sliver of tile around it. And if you are adding a niche, set its base on a grout line so the shelf does not land mid-tile.

Plan the rows so the top course is a full tile

This is where most DIY half-height schemes go wrong. Tiles start at the floor or the bath rim, the rows climb, and the last row ends up as a thin cut strip at the height you picked. The fix is to choose the finished height first and work down from it.

Pick the line. With 300 x 600mm tiles laid landscape, each row is 300mm plus the grout joint, so four rows give a line just above 1.2m. Eight rows come to about 2.4m, so in a 2.4m room the top row usually still needs a small cut at the ceiling.
Mark that line around the whole room with a laser level, not by measuring up from the floor, because floors and bath rims are rarely level.
Fix a straight batten one row below the line and tile the top rows first, working up from the batten. Remove the batten later and fill the bottom row, so any cut lands at the skirting or is hidden behind the bath.
Check where the line falls against the window sill, the mirror and any shelf. Moving the whole line up or down 20mm to meet a sill is worth doing.

For the same reason, run the line at one height around every wall, not at a different height on each one. The bath, basin and toilet walls should all stop on the same course.

How much tile each option uses

Take an example bathroom 2.0m by 2.5m with a 2.4m ceiling and an 80cm wide door. The wall run is 9.0m, or 8.2m once you take the door out.

Floor to ceiling: 8.2m x 2.4m = about 19.7m² before you deduct the window and the wall hidden by the bath.
Half height: 8.2m x 1.2m = about 9.8m².
Mixed (corner shower to the ceiling, rest at 1.2m): with a 900mm corner enclosure, 1.8m of wall at 2.4m is 4.3m², plus 6.4m at 1.2m is 7.7m², about 12m² in total.

The mixed scheme is what most family bathrooms in Bromley end up with: full protection where the water is and a lower, cheaper line elsewhere. Add 10 to 15 per cent for cuts and breakages on top of these figures. Our bathroom tiling cost breakdown shows how the area feeds into the labour price.

Finishing the top edge

A half-height or door-height scheme leaves an exposed top edge, and how it is finished decides whether the wall looks deliberate.

Period bathroom basin with green relief tiles capped by a blue border row and painted wall above — A period bathroom at Beamish Museum, where a border row finishes the top of the tiling | Bathroom in the Beamish Museum 02 by Immanuel Giel (Public domain), via Wikimedia Commons, https://commons.wikimedia.org/wiki/File:Bathroom_in_the_Beamish_Museum_02.JPG

Metal or PVC trim: the neatest option for porcelain, whose cut edge shows the body colour. Brushed steel, chrome and matt black all work; see our tile trim guide.
Pencil or dado border: a ceramic moulding that caps the top row, the classic choice for metro and Victorian-style schemes.
Factory edge up: some glazed wall tiles have a finished edge that can sit exposed if the top row is uncut.

Above the tiles, use a paint made for the room. Dulux Easycare Bathroom Soft Sheen is sold as moisture and steam resistant with a mould-resistant formulation; Dulux asks for two coats, six hours between them and 24 hours before the room sees condensation. Make sure the extractor fan is working, because no paint copes with a bathroom that never dries out.

When panels or paint are the better choice

If the shower is the only wet zone, some people tile the shower and panel or paint the rest of the room. Waterproof wall panels go up faster and have no grout to clean, but they look like panels. We compare the two in tiling vs wall panels. For a basin in a cloakroom, a single row of tiles or a glass splashback is often enough, and the same height logic as a kitchen splashback applies.

Frequently asked questions

Do you have to tile a bathroom floor to ceiling?

No. Only the shower walls really need tiles all the way up. The rest of the bathroom can be tiled to about 1.2m and painted above with a moisture-resistant bathroom paint.

Do building regulations say how high to tile a bathroom?

No. Building regulations do not set a tiling height. BS 5385-1, the code of practice for wall and floor tiling, recommends tanking the substrate in wet areas such as showers, which is why shower walls should be tiled and waterproofed to their full height.

Is a half-tiled bathroom outdated?

Not if it is set out well. A half-height line that runs level around the room on a full tile, finished with a trim or border, looks deliberate and suits period houses. What looks dated is a line that changes height from wall to wall or ends on a thin cut row.

How high should tiles go behind a bathroom basin?

At least high enough to clear the taps by a good margin, and ideally to the same line as the rest of the room. With basins at 80cm to 85cm, a 1.2m line gives 35cm to 40cm of tile above the rim, enough for splashes from washing and brushing teeth.

How high should you tile around a bath without a shower?

A band of at least two or three rows above the rim. With a standard 51cm bath, tiling to 1.2m gives about 70cm of tile above the rim and lines up with the basin and toilet walls.

Should you tile behind a toilet?

It is not essential, but tiling the toilet wall to the same height as the rest of the room makes the wall easy to wipe and keeps the line continuous. If you skip it, use a wipeable bathroom paint.

If you are planning a bathroom in Bromley or south east London and want the heights and setting out worked out before any tile goes on the wall, Bromley Tilers can measure up and quote.

020 8058 5574

contact@bromleytilers.co.uk