I need to get hold of some silicone sealant for using on part of the bathroom floor, but the snag is that aesthetically it needs to be grey. The usual sources (the sheds, Screwfix, Toolstation) can do white, clear, and brown, but not grey. Does anyone know where I can find some?
(Actually, Toolstation *do* have low modulus building sealant in portland colour, and polysulphide sealant in grey; but I'm not sure if polysulphide is OK for a bathroom floor? I did get some of the building sealant but it says 'external use only' and 'skins in 4-6 hours' which doesn't sound suitable.)