"This is the worst and most expensive silicone sealant I have ever used. It is an off white rather than mid-grey, it skins over very quickly, which is normally good except it stays almost liquid at its core for ages which then makes working it very, very difficult. I'm well used to working with silicone and normally find it ok but this stuff is something else, the skin stretches, wringles, rupures giving an overall result nothing short of disgusting and unacceptable. I have given this product 5 stars for reliability for one reason, you can rely on it being a nightmare to work with unless you are beading a very thin gap. I will never buy another product from this manufaturer. One other reviewer recorded a similar experience, I ignored him...was I wrong? You bet your sweet aspidistra!!"