Showerproof bathroom silicone is a mid modulus sanitary and shower silicone sealant that adheres to most smooth and non porous materials contains a powerful anti fungal compound to prevent mould growth in areas of high humidity forms a permanently flexible rubber seal showerproof bathroom silicone is ideal for sanitary and bathroom applications such as around baths showers and basins it can also be used for sealing around worktops and laminates in the bathroom size c3