Condensation isn't a ventilation problem, a cleaning problem, or a damp proof course problem. It's a cold surface problem. Warm the surface — condensation disappears.
Spray cork warms your walls from the inside out. One application, permanent fix.
Condensation forms when warm, moist air meets a cold surface. The air cools, can't hold the moisture anymore, and deposits it as water on your wall, window or ceiling.
Most people try to fix it by opening windows, running dehumidifiers, or painting over it with anti-damp paint. None of these fix the cause. The wall is still cold. Condensation comes straight back.
The only permanent fix is to warm the cold surface. When the surface temperature rises above the dew point of the room air, condensation cannot form — physically cannot.
Spray cork insulates from the inside, warming your wall surface by several degrees. Combined with its breathability — allowing any residual moisture to escape outward — condensation stops, mould can't grow, and the wall stays dry permanently.
Adds a tiny amount of insulation but nowhere near enough to warm the surface sufficiently. Works for a few months at best, then condensation returns and the paint starts flaking.
Loses room space (50–100mm per wall), creates a vapour barrier that traps moisture behind the board, and leaves cold spots at every joint. Often makes interstitial condensation worse.
Removes moisture from the air temporarily but doesn't address cold surfaces. The moment you stop running it, condensation returns. Ongoing energy cost for zero structural benefit.
Thin coating, applied directly to the cold wall. Warms the surface, breathes naturally, prevents mould. No space lost, no vapour barrier, no ongoing running cost.
The coldest point of an external wall. Black mould here is almost always condensation-driven, not rising damp. Cork applied to that wall corner fixes it permanently.
Upper floors have colder external walls and less air circulation. Condensation pools on walls and windowsills overnight. Cork applied to external-facing walls solves it.
High moisture production plus cold external walls is the worst combination. Cork on external walls dramatically reduces condensation even in high-humidity rooms.
Dripping from the roof inside is condensation on cold glass or polycarbonate. Spray cork on the conservatory ceiling warms it — dripping stops immediately.
Garages with rooms above are notorious for condensation dripping onto cars and stored items. Cork on the garage ceiling warms the surface and stops the drip.
Cold metal panels are condensation machines. Spray cork on the van shell warms the metal — condensation stops forming, damp doesn't build up behind your linings.
Tell us where it's happening. We'll come out, diagnose it, and fix it.