Gorilla Mould Resistant Sealant is a multi-use sealant that’s ideal for all around the home, indoors and out. This sealant is mould and mildew resistant, flexible, and won’t yellow, shrink or crack over time. Plus it's 100% waterproof and can be exposed to shower water or rain in just 30 minutes. To Use: All surfaces should be clean and free of dirt, grease, oil and old sealant. For gaps larger than 12mm use a backer rod to fill the gap. Best if applied above 5_C Available in White and Clear.1 x Gorilla Mould Resistant Sealant Clear 295ml