CWC Stop Condense anti-condensation paint
Walls sweating every winter?
Cold walls sweat when warm indoor air touches them. CWC Stop Condense keeps the painted surface up to 5°C warmer, so the water never forms and the mould stops coming back. An afternoon and a roller.
Condensation: You're in the right place
An even film or fine droplets on the room side of the wall, worst in cold weather, often gone by afternoon. Mould that keeps coming back in top corners and behind furniture. That's warm indoor air meeting a cold surface, and it's exactly what CWC Stop Condense is made for.
How it works
Paint that keeps the wall above the dew point
CWC Stop Condense is a white indoor paint made from latex and nanoporous minerals. That mineral structure works as a thin layer of insulation, keeping the surface up to 5°C warmer. A warmer surface stays above the temperature where condensation starts, so water doesn't form on it, and the mould that lived on the dampness has nothing left to grow on.
It's breathable, so vapour passes through instead of being sealed inside the wall. It dries matte white, can be tinted or painted over with water-based paint. Suitable for drywall, concrete, and masonry alike.
Coverage calculator
How much do you need?
Based on 0.60 kg per square metre over the standard two coats. The 3.78 kg pail covers about 6 m² (65 ft²); the 17 kg pail about 28 m² (300 ft²). Where the mould was severe or the cold spot is bad, plan a third coat on that area, so round up if you're between sizes.
An afternoon and a roller
How it goes on
Deal with any mould first
Health Canada's advice: scrub the area with water and a little unscented dish detergent, wearing gloves and a mask, then let it dry fully. On painted drywall, scrub gently and use less water; drywall that's soaked through, soft or crumbling needs replacing, not painting.
Check the surface
Clean, solid, no flaking paint or crumbling patches. Old paint in good condition can stay, and no primer is needed. Concrete or masonry needs to be slightly damp before the first coat.
Roll on two coats
Stir in up to 10 to 15% water if needed and roll, brush or spray the first coat, covering completely. Let it dry about 6 hours, then apply the second. Where the mould was severe or the cold spot is bad, add a third.
Mind the room while you work
Work between +5°C and +30°C and keep room humidity under 70% while you paint. Clean tools with water before the paint sets.
Not sure what your wall is doing?
Send us a photo of the wall. We'll tell you whether it's condensing or leaking, what prep comes first and how much to order.
Two sizes and the brush
Pick your pail
C.W.C. Stop Condense Thermal Paint 3.78 kg
$158.99
- Covers about 6 m² (65 ft²) in two coats
- Handles most problem walls or a pair of bad corners
C.W.C. Stop Condense Thermal Paint 17 kg
$447.50
- Covers about 28 m² (300 ft²) in two coats
- A full basement or several rooms
- The better value per square foot
Starter pack
$178.98
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