Painting a London Cloakroom: Small Space, Bold Colour & Moisture-Resistant Finishes

Why Cloakrooms Deserve Special Attention

The cloakroom is one of the most frequently overlooked rooms in a London home, yet it is one of the spaces guests use most. Whether tucked beneath a staircase in a Belgravia townhouse or carved from a hallway in a Chelsea flat, the cloakroom presents a unique set of decorating challenges: limited square footage, minimal natural light, exposure to moisture, and the need to make an impression in a very compact area.

Because the room is small, the cost of painting it is modest — which makes it the ideal place to take a risk with colour. A deep teal, a rich aubergine, or a dramatic charcoal that might feel overwhelming in a living room can be extraordinarily effective in a cloakroom. The key is understanding which finishes cope with the moisture environment and which preparation steps prevent peeling and mould in the months that follow.

Choosing Colour for a Small Space

Conventional advice often suggests painting small rooms in pale, neutral tones to make them feel larger. In a cloakroom, this logic rarely applies. The room is small, everyone knows it is small, and attempting to disguise the fact with magnolia tends to produce a space that feels bland rather than spacious.

Instead, consider the following approaches:

• Dark, saturated colour on all walls and ceiling. Wrapping the entire room in a single deep shade — Farrow & Ball's Hague Blue, Little Greene's Basalt, or Mylands' Sinner — eliminates visual boundaries and creates a cocoon-like intimacy that suits the room's proportions.
• A feature wallpaper with complementary paint. Many London decorators pair a bold wallpaper on one or two walls with a paint colour pulled from the pattern on the remaining surfaces. This works well in cloakrooms with alcoves or recesses.
• High-contrast schemes. A dark lower wall with a lighter upper section, divided by a dado rail or shadow gap, can add visual height without sacrificing drama.

When sampling colours, remember that cloakrooms are usually lit artificially. Test your chosen shade under the actual light fitting that will be used, not under a temporary builder's lamp or in daylight from another room.

Moisture and Finish Selection

Every cloakroom contains a basin and typically a WC. Some include a small shower. Even without a shower, the combination of hand washing, flushing, and limited ventilation means humidity levels spike repeatedly throughout the day.

For this reason, finish selection matters:

• Eggshell or satin for walls. A mid-sheen finish resists moisture better than flat matt and is easier to wipe clean. Mylands' Eggshell No. 5, Little Greene's Intelligent Eggshell, and Farrow & Ball's Modern Eggshell all perform well in damp conditions while maintaining an attractive depth of colour.
• Satinwood or semi-gloss for woodwork. Architraves, skirting, and any boxing around pipework should be finished in a durable satinwood. Water-based acrylics dry quickly with low odour, which is helpful in a room with limited ventilation.
• Ceiling paint. If the room has an extractor fan, standard ceiling matt is usually sufficient. Without extraction, consider a kitchen and bathroom ceiling paint with anti-mould additives.

Avoid using dead-flat matt finishes on walls adjacent to the basin. Splashback areas see frequent water contact, and flat paint absorbs moisture rather than repelling it.

Preparation in Tight Quarters

Working in a cloakroom requires a methodical approach to preparation. The confined space means dust and debris have nowhere to settle except on surfaces you have already prepared, so sequencing matters.

Step one: clear and protect. Remove the mirror, any shelving, the toilet roll holder, and towel hooks. If the basin is wall-mounted, mask it carefully with polythene sheeting. Lay a dust sheet over the WC and tape it down — there is nothing worse than paint splashes on porcelain.

Step two: wash down. Sugar soap the walls thoroughly. Cloakrooms accumulate a film of soap residue and hand cream transfer that prevents new paint from bonding. Rinse with clean water and allow to dry.

Step three: fill and sand. Any cracks, nail holes, or areas of loose plaster should be filled with a flexible filler and sanded smooth once dry. In older London properties — particularly Victorian and Edwardian houses in Pimlico, Fulham, or Mayfair — you may encounter blown plaster behind the basin where moisture has worked its way in over decades. If the plaster sounds hollow when tapped, it needs replacing before painting.

Step four: prime. On bare plaster, apply a mist coat (emulsion thinned with 10-15 per cent water) or a dedicated plaster primer. On previously painted surfaces in good condition, a light sand and direct recoat is usually sufficient.

Application Technique

The confined space of a cloakroom means rollers are less useful than in larger rooms. A four-inch mini roller handles wall sections between obstacles, while a two-inch angled brush manages the cutting in around the basin, WC, and pipework.

Work from the ceiling downward. Paint the ceiling first, then the walls, then the woodwork. In a room this size, you can often complete each stage in a single session, which means wet edges are easy to maintain and lap marks are unlikely.

Two full coats are the minimum for walls. If you are moving from a light colour to a very dark one, a tinted undercoat — or a third coat of the topcolour — may be needed to achieve even opacity.

Ventilation and Drying

Drying times extend in poorly ventilated spaces. If the cloakroom has an extractor fan, run it continuously during and after painting. If there is no extraction, open the door and place a small fan in the doorway to draw air through. Water-based paints release moisture as they cure, and in a sealed cloakroom, this moisture has nowhere to go — leading to extended drying times and potentially compromised film integrity.

Allow a minimum of four hours between coats for water-based eggshell, and preferably overnight. For oil-based finishes, allow sixteen to twenty-four hours between coats.

When to Call a Professional

A cloakroom is a manageable DIY project for a confident homeowner. However, if the room has significant plaster damage, exposed pipework that needs boxing, or if you want a high-gloss lacquer finish on woodwork, a professional decorator will deliver a noticeably better result. The small footprint keeps the cost reasonable — typically a day's work for preparation and two coats — and the finish quality in a room that guests see regularly is worth the investment.

For properties in Belgravia, Knightsbridge, Chelsea, and the surrounding areas, our team regularly decorates cloakrooms as part of wider refurbishment projects or as standalone commissions. We are happy to advise on colour, finish, and moisture management for any cloakroom configuration.