Does it work? The answer is very simply NO. These paints are also sold as Cellar Paint, or Masonry Paint. Damp proof paint traps moisture into a building structure.

When should I use damp seal?

Damp proof paint is specifically formulated to protect against damp interior walls. This type of paint can also be used as a primer, prior to painting with a decorative finish paint. A quick reminder – damp proofing should NOT be used as an alternative to solving any underlying damp problems.

How long does damp seal paint last?

Anti-condensation, anti-mould and anti-damp paint Anti-mould paint contains fungicides which kill mould spores and prevent their spread. These fungicides lose effectiveness over time, so they are always a temporary solution, but the best can last for 5+ years.