I've been using it recently for the first time. It's very good stuff, strong, flexible and can be used on wet surfaces but I wouldn't use it for sealing around a bath/shower. If it's just a sealant your after use a polyurethane sealant which is the same type of thing as silicone but lasts longer/uv resistant/easier to use but more expensive. If it's a sealant and adhesive your after try plumbers gold it's made for just that type of application and its cheaper, £5.74 from tool station. CT1 and Plumbers Gold are worlds apart from the no-nails rubbish.