CT1's range is completely waterproof. These sealants come clear or coloured with a variety of colours to choose from. You can use it in the bathroom on a bath or shower, on windows, on brick, the roof, guttering and many more locations. You can learn much more about CT1 silicone sealant in our article on CT1 products.
Everbuild's caulk is fast acting and also comes in a variety of colours. They also provide a variety of silicone sealant and sealant gun options which you can find here in our range.
At Kelvin Power Tools, we have a great team of experts ready to answer your questions. So if you want to know more, feel free to contact us and we'll be happy to help.