10/08/2026
Walls need to let moisture out, not just keep rain out.
Older solid walls in particular rely on being able to breathe: letting built-up moisture move out through the wall rather than getting trapped inside it. Coating that kind of wall with the wrong product and the moisture has nowhere to go, which is when problems like damp patches and cold spots can start.
CorkSol SprayCork™ is classified Class II vapour permeable to BS EN 7783-2:1999. In practice, that means it lets the wall continue to breathe while adding a layer of insulation on the surface.
This addresses issues arising from the fabric of the building: cold surfaces and thermal bridging. It is not a fix for damp caused by poor ventilation or a heating problem, those need addressing separately.
CorkSol SprayCork, applied by approved applicators across the UK.
Find your applicator at corksoluk.com
vapour permeable | breathable wall coating | damp prevention | solid wall | cork coating
CorkSol The UK's Original Sprayed Cork Coating. Natural. Sustainable. Built to last. Thermal insulation. Weatherproofing. Damp & mould resistance. Fire rated (Euro-class B). 25-year product warranty. 350+ approved applicators nationwide. Recommended by Kevin McCloud, presenter of Grand Designs