Best Paint for Bathrooms: Beating Steam and Mould
How to choose paint for a UK bathroom, including moisture-resistant finishes, ventilation, ceilings, woodwork and the prep that stops peeling and mould.
A bathroom is the most humid room in most homes. Hot showers, little airflow and cold surfaces make it prone to condensation, peeling paint and mould. The right paint helps, but ventilation and preparation matter just as much.
Understand the problem first
Paint does not create a waterproof barrier in the way tiles do. In a bathroom, it has to cope with:
- Repeated steam and condensation
- Occasional splashes, particularly near baths and showers
- Cold external walls where moisture settles
- Warmth cycling up and down
If mould or peeling keeps coming back, the cause is often poor ventilation or an underlying damp issue. See damp and mould before painting.
Choosing the paint
Look for a bathroom-specific formulation
Many manufacturers offer emulsions marketed for kitchens and bathrooms, often with moisture-resistance and an anti-mould or anti-fungal component. These are typically more suitable than a standard wall emulsion, although they are not a cure for severe damp or poor ventilation.
Finish
| Finish | Suitability |
|---|---|
| Soft sheen or silk | Common choice; wipes easily and resists steam |
| Washable matt | Hides imperfections, increasingly durable |
| Eggshell or satin | Good for woodwork, sometimes for walls |
| Gloss | Durable but shows flaws, mostly for woodwork |
For walls in good condition, a soft sheen is usually a safe option. For the differences between sheens, see matt vs silk vs eggshell.
Ceilings
The ceiling is where steam collects, and it is often the first area to show mould. Use a moisture-resistant paint, usually matt, and clean the surface with a suitable mould treatment before repainting. Check the extractor fan is working effectively.
Woodwork and fittings
Skirting boards, door frames and window frames need a water-resistant finish such as satin or eggshell, ideally water-based to reduce yellowing. Prime any bare wood or exposed areas thoroughly, as swollen wood lets moisture creep behind the paint. See how to prepare woodwork for painting.
Preparation steps
- Fix leaks and ventilation issues. Check seals, extractor fans and any dripping.
- Clean and treat mould. Follow the instructions and wear protection.
- Wash walls to remove soap residue and grime.
- Fill and sand damaged areas.
- Spot prime repairs and stains.
- Ensure surfaces are fully dry before painting.
Where not to rely on paint
Shower enclosures and areas with direct, constant water contact need tiles, waterproof panels or an appropriate waterproof system. Painted plaster is not suitable there.
Ventilation during and after painting
Keep windows open while painting and for a few days afterwards where possible. Avoid steamy showers until paint has had time to dry and start to cure, following the tin's guidance, because early moisture can cause blistering or dullness.
Colour thinking
Small bathrooms often benefit from lighter tones to feel larger, but deep colours can look dramatic if there is enough light. Test samples in the room, because artificial lighting changes colours. See how to test paint colours with samples and colour schemes for small rooms.
Getting help
If you want a decorator to handle bathroom work, mention the ventilation, any past mould and whether the ceiling is included. Compito requests let you describe those details and include photos so quotes are based on what is really there. For typical prices, see how much it costs to paint a room.
A realistic example: a family bathroom with no window
Picture an internal bathroom with only an extractor fan. Steam lingers, the ceiling is speckled and the paint has blistered above the bath. A sensible plan is to check the fan is actually moving air (hold a tissue to it), clean off the mould, let the ceiling dry fully, spot-prime the blistered patches and apply two coats of a moisture-resistant matt. Without the ventilation fix, the same patches would usually be back within a season.
Choosing by situation
| Situation | What usually works |
|---|---|
| Small bathroom, shower used daily | Soft sheen walls, matt ceiling, extractor running after use |
| Bathroom with a window and radiator | Washable matt or soft sheen on walls |
| Rented bathroom, neutral scheme | Soft sheen in a light neutral, easy to touch up |
| Wet room or shower enclosure | Not paint: tiles or waterproof panelling |
Common mistakes
- Painting over mould without treating it. The spores sit beneath the new coat and grow through.
- Using bargain wall paint on the ceiling. Standard emulsion tends to absorb moisture and discolour first.
- Painting a cold, damp wall. Moisture trapped underneath causes blistering within weeks.
- Forgetting the back of the door and window reveals. These are the corners where condensation sits.
- Taking a hot shower the same evening. Fresh paint needs time before heavy steam.
Check ventilation before spending on paint
Run the extractor while someone showers and see whether the mirror still fogs heavily ten minutes later. If it does, the fan may be undersized or blocked. Fan replacement or ducting problems are for a builder, and any wiring work is a job for a registered electrician, not the decorator. Simple habits help too: keep the door closed during a shower so steam is drawn out by the fan rather than into the landing, and wipe the window sill and tiles afterwards.
Maintenance after painting
Wipe condensation from walls and sills in winter, and wash light marks with a damp cloth rather than strong chemicals. Repaint small patches early. A bathroom repainted every few years while still in good condition is easier and cheaper than one left until it needs full stripping and treatment.
If paint keeps failing in the same spot, it is usually telling you about moisture, not about the product.
Frequently asked questions
Is bathroom paint waterproof?
Not in the sense of tiles. It is designed to resist moisture and steam, but it still depends on good ventilation and dry surfaces.
Can I use kitchen paint in a bathroom?
Often yes, as many are sold as kitchen and bathroom ranges. Check the label for suitability.
How soon can I use the shower after painting?
Check the manufacturer's instructions. Many suggest waiting at least a day or two so the paint can harden, with good ventilation.