Everbuild weather mate sealant everbuild weabk weather mate sealant is a multi use sealant based on an advanced isocrylic formula that provides the ultimate in sealant technology for adhesion to all surfaces the product can be applied in wet weather to wet surfaces and even under water adheres to many problematic surfaces such as bitumen lead galvanised steel and roofing felts everbuild weabk weather mate sealant black 310ml