UK bathroom cabinets cluster around a small set of dimensions because they are working around fixed plumbing and fixed door swings. Wall cabinets are typically 12cm to 20cm deep, mirror cabinets 12cm to 16cm, and floor standing vanity units 35cm to 50cm deep with a height of 80cm to 90cm including the basin. Widths repeat at 40cm, 50cm, 60cm, 80cm and 100cm because basins are made to those sizes.<\/p>\n
The dimension that causes the most trouble is not width but depth. A cabinet deeper than 20cm on a wall beside a door, or a vanity deeper than 45cm in a room under 200cm across, produces a bathroom that works on paper and obstructs in use. In the compact bathrooms common in British terraced housing and flat conversions, depth is the number to fix first.<\/p>\n
A bathroom is a room people move through in a confined space while bending, reaching and standing at a basin. Every centimetre a cabinet projects from the wall is taken from that movement, and unlike a living room, there is no slack. This is why bathroom cabinets evolved shallow: a 20cm wall cabinet above a basin still allows someone to lean forward to the tap without contacting it, while a 30cm unit does not.<\/p>\n
Width then follows the sanitaryware. Basins are manufactured in a standard set of widths, and vanity units are built to carry them, so the widths available are effectively decided before the cabinet is designed. A 60cm vanity is the workhorse of UK bathrooms because a 60cm basin suits a room that also has to contain a bath and a toilet.<\/p>\n
Height is more variable than either. A wall cabinet is usually mounted with its base 130cm to 140cm above the floor, which clears the basin and the tap and keeps the shelves reachable. A vanity unit brings the basin rim to between 80cm and 90cm, and a cloakroom basin may sit slightly lower where it is used by children.<\/p>\n
Three clearances determine whether a bathroom layout works. In front of the basin, allow at least 70cm of clear floor so someone can stand and bend without contacting the opposite wall or the toilet. In front of the toilet, allow 60cm minimum with 20cm to either side of the centre line. In front of a bath, allow 70cm for getting in and out and for drying.<\/p>\n
Door swing is the fourth and the one most often forgotten. An inward opening bathroom door sweeps an arc of around 80cm, and any cabinet placed within that arc will be struck. In very small bathrooms and en suites, changing the door to open outwards or fitting a sliding door frequently releases more usable wall than any change of cabinet ever could.<\/p>\n
Mirror cabinet doors add a second arc at head height. A 60cm wide single door swings through 60cm, and in a narrow bathroom that arc can meet a shower screen or a towel rail. Where space is genuinely tight, sliding door mirror cabinets remove the problem entirely, which is why they persist in the category despite being more complex to build.<\/p>\n
The table below sets out the dimensions the category is built around, together with the clearance each unit requires. These are product specifications and planning clearances rather than statistics.<\/p>\n
| Cabinet type<\/th>\n | Typical width<\/th>\n | Typical height<\/th>\n | Typical depth<\/th>\n | Clearance required<\/th>\n<\/tr>\n<\/thead>\n |
|---|---|---|---|---|
| Wall mounted cabinet, single door<\/td>\n | 30cm to 45cm<\/td>\n | 50cm to 70cm<\/td>\n | 12cm to 18cm<\/td>\n | Door swing of 30cm to 45cm<\/td>\n<\/tr>\n |
| Wall mounted cabinet, double door<\/td>\n | 50cm to 80cm<\/td>\n | 55cm to 70cm<\/td>\n | 12cm to 20cm<\/td>\n | Two arcs of 25cm to 40cm each<\/td>\n<\/tr>\n |
| Mirror cabinet, hinged<\/td>\n | 40cm to 80cm<\/td>\n | 55cm to 70cm<\/td>\n | 12cm to 16cm<\/td>\n | 30cm to 40cm in front at head height<\/td>\n<\/tr>\n |
| Mirror cabinet, sliding<\/td>\n | 60cm to 120cm<\/td>\n | 55cm to 70cm<\/td>\n | 13cm to 18cm<\/td>\n | None beyond the unit face<\/td>\n<\/tr>\n |
| Floor standing vanity unit<\/td>\n | 40cm to 100cm<\/td>\n | 80cm to 90cm with basin<\/td>\n | 35cm to 50cm<\/td>\n | 70cm of clear floor in front<\/td>\n<\/tr>\n |
| Wall hung vanity unit<\/td>\n | 50cm to 120cm<\/td>\n | 50cm to 60cm unit depth of body<\/td>\n | 35cm to 46cm<\/td>\n | 70cm in front, floor left clear beneath<\/td>\n<\/tr>\n |
| Cloakroom vanity unit<\/td>\n | 35cm to 50cm<\/td>\n | 80cm to 85cm with basin<\/td>\n | 22cm to 30cm<\/td>\n | 60cm of clear floor in front<\/td>\n<\/tr>\n |
| Tall bathroom storage unit<\/td>\n | 30cm to 40cm<\/td>\n | 160cm to 190cm<\/td>\n | 25cm to 35cm<\/td>\n | Door swing plus a stable fixing<\/td>\n<\/tr>\n |
| Under basin storage unit<\/td>\n | 40cm to 60cm<\/td>\n | 50cm to 60cm<\/td>\n | 25cm to 35cm<\/td>\n | Clearance for the trap and pipework<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nPlumbing and electrics set limits before furniture does<\/h3>\nThe waste trap beneath a basin is the reason many vanity units have a cut out or a reduced internal depth, and it is the reason a drawer under a basin is rarely full depth. When choosing a unit, check whether the internal layout accommodates a bottle trap and whether the waste exits to the rear or the floor, because a unit designed for one will not easily accept the other.<\/p>\n Electrics are governed by zones. BS 7671, the IET Wiring Regulations, defines bathroom zones based on proximity to the bath and shower, and the IP rating required of any fitting follows from the zone it sits in. An illuminated mirror cabinet, a shaver socket or an integrated demister pad all fall within this, and the installation is work that should be carried out by a competent electrician. Approved Document G of the Building Regulations covers sanitation and hot water provision in dwellings and is the reason basin positions and hot water arrangements are not a matter of preference alone.<\/p>\n Ventilation deserves a mention because it affects the furniture. Bathrooms generate persistent moisture, and cabinets in poorly ventilated rooms suffer at the edges where panel meets panel. Units with sealed edges and moisture resistant cores last considerably longer, and a working extractor does more to protect bathroom furniture than any surface treatment.<\/p>\n Making a small UK bathroom work<\/h3>\nWall hanging is the most effective single change available in a small bathroom. Lifting a vanity unit off the floor exposes the tiling beneath, which makes the floor read as continuous and the room as larger, and it makes cleaning straightforward. The fixing has to suit the wall construction, and a stud or plasterboard wall needs appropriate support behind the unit for the combined weight of cabinet, basin and water.<\/p>\n Go tall rather than deep where storage is short. A 30cm deep tall unit in a corner holds more than a 50cm deep low unit occupying the same floor and obstructs far less. Mirrored fronts compound the benefit by reflecting the light already in the room, and a mirror above the basin remains the highest value square metre in any bathroom.<\/p>\n Choose surfaces for the environment. Gloss fronts wipe clean and reflect light, matt finishes hide water spotting, and chrome fittings are easier to keep clear of limescale in hard water areas than brushed finishes. The units in our bathroom cabinets UK<\/a> range include both wall hung and floor standing formats at the standard widths above, and the wider modern bathroom furniture UK<\/a> selection covers vanities and tall storage in matching finishes.<\/p>\n Measure the room, then draw the arcs. Put the door swing and every cabinet door swing on the plan before choosing anything, because those arcs eliminate more options than dimensions do. Then set the depth limit for each wall, and only after that consider width and finish.<\/p>\n Buy to the plumbing, not around it. Moving a soil pipe or a waste run is the most expensive change in a bathroom, so a unit that accommodates the existing waste position will nearly always be the better decision than a unit that requires the pipework to move. Where storage is needed beyond the basin, a slim bathroom storage units UK<\/a> option against a clear wall adds capacity without touching the plumbing at all.<\/p>\n |