Coo-Var Anti-Damp Paint | Interior Damp Blocking Paint

• Surface Prep: Remove any loose/flaking paint and mould; lightly clean walls.
• Application: Stir thoroughly. Use a brush, short pile roller, or spray—avoid pooling or streaks.
• Drying/Curing: Wait ~16 hours before applying a breathable topcoat. Ensure good ventilation.
• Maintenance: Store leftover paint sealed. If damp persists, investigate the source of moisture. Paint can help but root causes must be addressed.
• Pro Tip: A second coat may be needed for surfaces with extreme dampness or persistent efflorescence.

Need a step-by-step guide? Our experts are standing by—chat live now!

Fast, Reliable & Fully Tracked UK Delivery

Every order is dispatched from our warehouse using a fully tracked DX or FedEx service, so you always know when your paint will arrive.

Delivery Options

• FREE Standard Delivery (orders over £75) Arrives in 2–3 working days
• Standard Delivery – £7.95 Arrives in 2–3 working days
• Express Delivery – £13.95 Next working day delivery when you order before 12:00 noon (Mon–Thu)
• Spending £75+? Select Express Upgrade at checkout and only pay the difference

Dispatch & Delivery Times (What Happens After You Order)

• Express delivery (order before 12:00 Mon–Thu) Dispatched same day, delivered next working day
• Standard delivery (Mon–Wed orders) Dispatched next working day, delivered 2–3 working days later
• Orders placed Thursday (standard delivery) Dispatched Friday for Monday delivery
• We do not dispatch or deliver on weekends or UK bank holidays

What to Expect on Delivery

Please provide a contact telephone number at checkout. This allows the courier to share tracking updates or contact you if there are any delivery issues.

Most orders require a signature on delivery. If you may not be available during the day, we recommend delivery to a workplace, business address, or another location where someone can sign.

Outside the UK Mainland?

Delivery prices shown apply to UK Mainland only.

For the Highlands, Islands, Northern Ireland, or non-mainland addresses, please contact us for a quick personalised quote via live chat, by calling 01482 222 421, or emailing info@specialistpaintsonline.co.uk.

Bottom Line

Order today, get fast and reliable delivery, track every step, and get painting without delays.

Free Delivery on Orders Over £75: Stock up on all essentials in one go

• Mould Treatments & Cleaners Prepare surfaces thoroughly if mould is present
• Application Tools: Brushes, short pile rollers, trays for even coverage

Ready to complete your kit? Chat with us for recommended extras!

Coo-Var Anti-Damp Paint goes straight onto damp interior walls and ceilings, sealing efflorescence before it ruins your décor. By blocking moisture and stains in one quick coat, it halves labour, saves on costly re decorations and gets rooms earning or living in faster. Backed by over 100 years of British paint innovation, it’s arguably the best damp blocking primer money can buy. Its low odour resin reacts with surface moisture, forming a water resistant film where standard emulsions simply fail causing paints to flake and peel.

Key Benefits

• Paint on Damp – Apply directly to moist plaster, cement or stone, avoiding lengthy drying delays and speeding project turnover.
• Rapid Leak / Flood Recovery – No need to wait till surfaces are fully dry, re-coat walls & ceilings quickly after leaks or floods, minimising downtime and disruption for occupants.
• Cost Effective Damp Solution – Delivers a professional moisture barrier without the expense of replastering or tanking systems.
• Stop Stain Bleed – Active formula locks in salt marks, water rings and tide lines so your top coat stays bright and clean.
• Slash Repaint Costs – Durable matt finish prevents future peeling, cutting repeat treatment and protecting your profit.
  

DIY friendly and low odour, brush it on this morning, over coat tomorrow, add to basket today for next-day UK delivery, buy today, paint tomorrow and beat damp for good.

• Finish / Texture: Matt white
• Base: Low-odour solvent-based resin
• Available Colours: White
• Pack Sizes: 1 L, 2.5 L
• Coverage: ~9 m²/L @ 40 µm DFT
• Drying Times @ 20 °C: Touch dry ≈ 8 h; hard dry overnight
• Re-coat Interval: ≥ 12 h / overnight
• Minimum Application Temp.: 5 °C
• VOC Content: ≤ 499 g/L
• Flash Point: > 32 °C (closed cup)
• Application Method: Brush or roller; thin up to 5 % with Thinners 14 for spray
• Surface Suitability: Damp but not saturated interior plaster, cement, stone walls & ceilings
• Volume Solids: 37 %
• DFT/WFT: 40 µm DFT; 110 µm WFT

Need detailed specs or prep guidance? Chat with our experts now!

Safety data sheet
Technical data sheet

1. What is Coo-Var Anti-Damp Paint used for?

Coo-Var Anti-Damp Paint is formulated to be applied directly to walls that are still damp from leaks, floods, or rising/penetrating damp. It helps prevent paint failure by controlling moisture release and blocking efflorescence on walls and ceilings.

2. Can I apply this paint on walls that are wet to the touch?

Yes. One of its main benefits is that it can be applied even when the wall is still wet, saving you the hassle of waiting weeks for surfaces to dry. Its special active reagent reacts with surface moisture, ensuring a flake-free finish.

3. Does it help reduce mould or discolouration?

Absolutely. This product contains biocidal protection that minimises mould growth and discoloration, preserving a fresh, healthy look on damp surfaces.

4. How long should I wait before overcoating?

Typically, you should wait about 16 hours before applying a conventional topcoat. Once dry, you can paint over it with a standard breathable emulsion or other compatible finish.

5. Is it suitable for exterior as well as interior use?

Coo-Var Anti-Damp Paint is primarily intended for interior damp areas such as basements, bathrooms, or flood-prone walls. For exterior walls, consult our experts about alternative or additional protective measures.

6. How much coverage can I expect?

Coverage is approximately 9 m² per litre, though it varies depending on how porous or damaged the substrate is. Applying an even coat helps maximise coverage and performance.

7. Does it emit strong odours?

No. Although it’s oil-based, it’s formulated to be low odour, making it more comfortable to use in enclosed or frequently used areas. Always ensure adequate ventilation during and after application for best results.

Need more details on painting damp walls or choosing the right topcoat?

For personalised advice or additional information, contact our experts now via live chat—we’re here to help you tackle damp surfaces and achieve a lasting, fresh finish!