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Ronseal Problem wall White Matt Interior Anti-mould paint, 2.5L

Sold & shipped by B&Q
£42£16.80 per l

Product Features

  • Tough & Scrubbable
  • Resists steam
  • Easy wipe-clean emulsion

Product details

Product information

Product information

Ronseal Anti Mould Paint resists moisture and steam and stops common mould growing on your walls or ceilings for up to six years. It’s ideal for kitchens, bathrooms, cellars and anywhere else that attracts mould.

  • Guarantee - Statutory
  • Suitable for use on Plaster
  • Surface Preparation - Make sure the room is above 10 °c and open doors and windows for extra ventilation. Put down dust sheets to protect anything you don’t want to get paint on. To prepare newly plastered walls - If you’ve recently plastered your walls or ceilings, they need to be left to dry for seven days. You will then need to seal the plaster before using the Anti Mould Paint. To prepare previously painted walls - If you already have mould, use mould killer to get rid of it. Don’t try and sand the mould off the wall otherwise you risk spreading the spores. Sand off any flaking paint so you have a smooth surface ready for painting.
  • Instructions for Use - Thoroughly stir the paint so the consistency is smooth. Pour the contents of the tin into a tray and coat your brush or roller. Wipe off any excess on the rim of the tray. Apply the first coat and wait four hours for it to dry. Apply the second coat and wait four hours for it to dry. If you can still see colour through the paint, apply more coats until the colour is no longer visible. Once you have applied the last coat, wait 24 hours before letting condensation build up in the room again.

Features and benefits

  • Tough & Scrubbable
  • Resists steam
  • Easy wipe-clean emulsion
  • Lasts for six years
  • Stops mould from growing
  • Moisture & steam resistant
  • Paint stays mould free

Legal information

  • Contains 1,2-benzisothiazol-3(2H)-one and reaction mass of 5-chloro-2-methyl-2Hisothiazol-3-one and 2-methyl-2H-isothiazol-3-one (3:1). May produce an allergic reaction.Warning! Hazardous respirable droplets may be formed when sprayed. Do not breathe spray or mist.

Health and safety

Please note that this item has additional safety or regulatory datasheets available. The product may have possible health and safety hazards covered in these documents. Refer to the container for full information and always follow the instructions.

Specifications

BrandRonseal
Application methodBrush or roller
BaseWater-based
ColourWhite
Container typeTin
Coverage30m²
Drying time1-2 h
FinishMatt
LocationInterior
Minimum touch dry time1h
Number of coats2
Paint base densityMedium base
Paint typeProtector
Quick dryQuick dry
Recoat time4 hours
RGB value255, 255, 255
Room useBathroom
VOC levelLow
Volume2500ml
Product code5010214866243

Documents

Safety Data Sheet

Safety Information

Read carefully and follow all instructions. Keep out of reach of children. If medical advice is needed, have product container or label at hand. Contains a biocidal product. Contains Contains 1,2-benzisothiazol-3(2H)-one and reaction mass of 5-chloro-2-methyl-2H-isothiazol-3-one and 2-methyl-2H-isothiazol-3-one (3:1). May produce an allergic reaction. Warning! Hazardous respirable droplets may be formed when sprayed. Do not breathe spray or mist.

Contains a biocidal product for the preservation of the dry film: 3-iodo-2-propynyl butylcarbamate (IPBC).

Manufacturer / EU responsible person

EU responsible person

Sherwin-Williams (Ireland) Ltd

Address

Unit 53

Robinhood Industrial Estate

Dublin 22

D22PW99

Ireland

Contact

Reviews
4.33 / 5(63 reviews)

SP784 - 5 / 5 - 04/08/2026

Very happy with product

Works brilliantly, easy to use and does what it needs to

Gary - 5 / 5 - 31/07/2026

Good cover

Covered about 90% of my stains with only the bad ones still showing through

Ben - 5 / 5 - 07/05/2026

Great product and price 👍

Great product used this a few times now. Easy to use. Good value and very effective at resisting mould. Will use again.. All good.. 👍

Wildncrazy2 - 5 / 5 - 31/03/2026

Anti mold paint and blocker

Purchased this for the bathroom ceiling, excellent coverage, only required 1 coat for heavily stained, easy to use and clean and also is the finished product

Shan33 - 5 / 5 - 28/03/2026

The product is great

Easy application, needed 2 layers to be full coverage. Matt white finish, easy to cover mould.

SusieQ48 - 5 / 5 - 04/03/2026

Does what it says on the tin….literally.

Used before in various locations in the house. After a year, it appears to be working and I will use on other areas.

Lynn 63 - 4 / 5 - 15/02/2026

Good product

I bought this product last week too paint my kitchen, it covered the few mould spots I had after a couple of coats. The coverage was good and easy to use, it was touch dry after an hour, I chose the Matt finish which I am happy with.

Lollie96 - 5 / 5 - 10/02/2026

Highly recommend

Purchased this product recently and it has really done its job well. Yes pricey but well worth it to help deter mould. The coverage is brilliant. Application is easy. And the finish was excellent.

balmpot - 5 / 5 - 10/02/2026

the product covered ok

I bought last month followed instructions on can did need two coats covered well only time will tell if it works

Zack94 - 4 / 5 - 23/12/2025

Solid product so far...

So far so good. Went on nicely and good coverage. Time will tell about how long the anti mould works for