Waterproof Pond Sealer Bonda G4 All Sizes - All Colours Deep Bonding Coating
Bonda G4 Pond Waterproof Sealer All Sizes - All Colours Deep Bonding Coating. Bonda G4 Pond Sealer Clear is a one component polyurethane which forms a non-porous, tough, durable but flexible seal. It is a browny translucent in colour.