How To Stop Condensation on Walls and Ceilings
This video details the process of treating cold internal surfaces to prevent the formation of condensation. Warm air hitting cold walls often creates moisture, leading to damp patches and potential black mould growth. The footage demonstrates a practical method for insulating these surfaces using a specialised coating to keep wall temperatures higher.
The video shows that preparation serves as the first stage. Wipe down the wall to remove loose debris, dust, or grease that might affect adhesion. If black spots already exist on the plaster, the user sprays a mould killer to treat the infection before painting. This step cleans the substrate and creates a sanitary base for the insulating layer. Painting begins only after the cleaned wall dries completely.
The video shows the application of the insulating paint, specifically Ronseal Anti-Condensation Paint. The technique involves loading the brush or roller heavily to apply a generous layer. The demonstration focuses on covering the problem area and the immediate surrounding wall. The user applies a thick coat rather than spreading it thinly, as this density aids thermal insulation. A second coat follows after the first one dries to complete the barrier.
Homeowners can choose to leave the white matte finish as is or decorate over it. The treated surface remains effective even under a new topcoat of standard emulsion or wallpaper. This allows for normal room decoration to continue after the damp-proofing task concludes. The guided steps offer a straightforward solution for managing humidity effects on cold masonry or plaster.