The Best Pond Sealant - Beware of Imitators!
Concrete based ponds need the final render sealing to stop the water getting in and lime leaking out. G4 has been long established as the market leader for this task. You need 3 coats of clear G4 when you apply it to a pond. This is a total of 550g per square metre. There is enough sealant in a 5kg tin for 9sqm (eg, a pond of 2m long x 1m wide and 1m deep = 8sqm)
Garden ponds can often be over looked once the sun goes down, but with a few simple accessories your pond will transform your garden into an incredibly atmospheric space.