The Everbuild Black Roof Gutter Sealant is premium level, butyl-based sealant that provides instant as well as permanent weather-proofing to wide range of roof-based applications. It can be applied in wet conditions, even under heavy rain and it adheres to most common roofing materials such as bitumen, asphalt, felt, metals and wood. The sealant is in a constant semi-drying state thereby remaining permanently plastic beneath the surface. It incorporates polymer additives to improve adhesion to various materials and will also provides excellent gap filling properties without shrinkage.