Anyone know what substance will remove hardened G4 pond sealer? (otherwise known as 'damp seal' for interior walls)
I've a very nice stone that is good and water tight but also milky in colour as water got on it before it dried fully.
It goes rock hard so wire brushing is a bore and may damage the rock surface too much.
I've a very nice stone that is good and water tight but also milky in colour as water got on it before it dried fully.
It goes rock hard so wire brushing is a bore and may damage the rock surface too much.
