G4 Pond Sealer - Clear

Anyone who has ever built a concrete rendered pond, will probably have heard of G4. Due to its cold-curing resin formula, G4 is a tough, watertight sealer for rendered concrete, brick or porous stone ponds and is also safe for fish. 5kg of G4 is enough for three coats on an area approximately 10m². Normal recommendations are two coats of clear G4 (which is cheaper), followed by a coat of black G4.