Home / Advice / Does Dulux anti-mould paint stop mould?
Does Dulux anti-mould paint stop mould?
Mould-resistant paint can help a finished wall resist mould growth on its surface, but it does not remove the moisture that causes mould. Clean off existing mould, fix ventilation and leaks, then paint, and follow the tin for preparation.
Last reviewed:What does anti-mould paint do?
Dulux and several other brands sell paints for bathrooms and kitchens that are described as anti-mould or mould resistant. These paints usually contain ingredients meant to stop mould growing on the painted surface, and they are made to cope with steam and wiping.
What the paint does not do is remove moisture. Mould grows where there is damp, and the paint film only protects its own surface. If the wall stays wet, mould can still grow on dirt, soap film or anywhere the paint is damaged, and damp can still harm the plaster behind.
This page does not test or rate any Dulux product. If you are looking at a Dulux tin labelled anti-mould or mould resistant, read the label for what the maker says it does, how long the protection is described as lasting, and how to prepare the wall.
QuoteZila starts in Cheshire, with Crewe, Nantwich and Sandbach first, and anyone in the UK can post a decorating or damp job.
Why does mould keep coming back?
GOV.UK says simply removing surface mould will not prevent damp and mould from reappearing [S1]. It says condensation is one of the most common causes of damp and mould in homes, and that moisture from showering, drying laundry and cooking builds up in the air if it cannot be removed [S1]. It also says kitchens and bathrooms in particular need adequate ventilation [S1].
Common reasons mould returns:
- an extractor fan that is missing, too weak, blocked or switched off
- windows kept shut after showers and baths
- washing dried indoors on radiators
- a cold wall or ceiling where steam condenses
- a hidden leak from a pipe, shower tray or gutter
Fixing the cause matters more than the paint. Our damp proofing page covers damp specialists if you suspect the damp is coming through the wall.
How should a mouldy wall be prepared?
Follow the instructions on the paint tin, because preparation steps vary. In general:
- Clean the mould off. GOV.UK says mould and mildew products should be used in preference to bleach, for health and safety reasons [S1].
- Let the wall dry fully. Painting damp plaster traps moisture.
- Check the surface. Flaking paint should be scraped back and holes filled.
- Prime if needed. Some stains need a stain-blocking primer.
- Apply the paint in the coats and recoat times shown on the tin.
Cleaning products and some paints carry safety labels. HSE explains that hazard pictograms, shown as a diamond with a red border, alert us to a hazardous chemical that might cause harm [S2]. Wear gloves, keep the window open and follow the label.
GOV.UK says larger areas of mould should only be dealt with by qualified professionals [S1]. If mould covers a large area, or keeps returning after cleaning, our mould removal cost guide explains what a specialist quote covers.
Where does anti-mould paint make sense?
It suits rooms where some condensation is hard to avoid even with good ventilation:
- bathroom and shower room ceilings and walls
- kitchens, especially around the hob and window
- utility rooms where washing is dried
- cold north-facing bedrooms that tend to collect condensation
In these rooms, a wipeable mould-resistant finish plus a working extractor fan is a sensible pairing. Our bathroom paint guide explains how to choose a finish that copes with steam.
When should you call a trade?
Call a decorator if you want the wall cleaned, prepared and painted properly, especially on a high or awkward ceiling. Call an electrician if the extractor fan needs replacing or upgrading. Call a damp specialist or builder if you suspect penetrating or rising damp, or a leak.
Ask each one what they think is causing the mould before they quote for painting. Our painters and decorators page covers the trade.
Jobs you might post
These are examples, not taken from real job posts.
- "Bathroom ceiling with black mould spots that come back after cleaning. Please quote to treat, prepare and repaint in a mould-resistant paint."
- "Kitchen wall behind the fridge has mould. Please advise on the cause and quote to redecorate."
- "Bedroom window reveals going mouldy every winter. Please inspect and advise."
QuoteZila is free for customers and local businesses [QZ1]. Your job goes to up to five matched local businesses [QZ2].
Honest status: QuoteZila is new. We're starting in Cheshire, beginning with Crewe, Nantwich and Sandbach, and growing area by area. Anyone in the UK can still post a job or register a business. How fast you get quotes depends on how many local businesses have joined near you. Businesses can register and receive jobs straight away. We don't check insurance, qualifications or registrations, so please check these yourself before you hire.
Posting a job is not open yet
Questions about anti-mould paint
Can I paint straight over mould?
No. Paint over mould does not kill what is underneath, and the mould often shows through again. Clean the mould off first, let the wall dry, and follow the paint maker's preparation instructions on the tin.
Should I use bleach on mould before painting?
GOV.UK says mould and mildew products should be used in preference to bleach, for health and safety reasons. Read the product label and keep the room ventilated.
Is anti-mould paint worth it in a bathroom?
It can be a sensible finish in a steamy room, alongside good ventilation. It is not a cure for damp. If mould keeps coming back quickly, find out why before redecorating.
Does QuoteZila check decorators?
No. We don't check insurance, qualifications or registrations, so please check these yourself before you hire. You can report a quote or a business from your job page.
This page is general information, not professional or legal advice. QuoteZila does not check Gas Safe, WaterSafe, NFRC, NICEIC or other registrations against the register on your behalf: look them up yourself.
Part of Advice. All services
Related trades
Cost guides
Related questions and guides
Related pages
- How Many Mist Coats Does New Plaster Need?. How to judge how many mist coats new plaster needs, what a properly sealed wall looks like, when a second coat helps, and what to ask a decorator to include.
- How to Caulk Skirting Boards Before Painting. When to caulk skirting boards, which gaps decorator's caulk suits, why silicone is a different product, and how to get a neat line along the wall to paint.
Sources
- QZ1: QuoteZila product fact. QuoteZila home and FAQ copy.
- QZ2: QuoteZila product fact. QuoteZila FAQ How does getting quotes work.
- S1: Understanding and addressing the health risks of damp and mould in the home, GOV.UK (DHSC and MHCLG). Accessed 2026-11-02. https://www.gov.uk/government/publications/damp-and-mould-understanding-and-addressing-the-health-risks-for-rented-housing-providers/understanding-and-addressing-the-health-risks-of-damp-and-mould-in-the-home--2
- S2: Hazard pictograms (symbols), Health and Safety Executive. Accessed 2026-11-02. https://www.hse.gov.uk/chemical-classification/labelling-packaging/hazard-symbols-hazard-pictograms.htm