G4 Sealer/ Primer

G4 Damp Seal

G4 seal damp out of concrete, brick, stone and wood with a non-porous plastic coating that is hard wearing, tough but flexible. Being moisture cured it can be applied in poor conditions, down to 0oC and in high humidity.


  • Easy to use
  • Tough flexible coating
  • Seals walls & floors
  • Seals moisture out from moulds prior to laying up glass fibre 1kg will cover approximately 6m2 (single layer)
  • Improves the bond of GRP to metal and/or wood