The Everbuild Roof & Gutter Sealant C3 is a premium-quality, butyl-based sealant and adhesive engineered to provide instant, permanent weatherproofing for a wide variety of exterior roofing and guttering applications. Designed for professional contractors and maintenance workers, it offers a dependable solution for emergency repairs and routine installations exposed to the elements.
 
Formulated with integrated polymer additives, this black thixotropic paste features exceptional adhesion properties that allow it to be applied even in wet conditions or during heavy rain. It provides a high-solids formulation that delivers excellent gap-filling capabilities without shrinking, remaining permanently plastic beneath a protective surface skin to accommodate natural thermal movement and building expansion.
 
Supplied in a standard C3 (295ml) cartridge compatible with conventional caulking guns, it bonds securely to common roofing materials including bitumen, asphalt, roofing felt, lead, zinc, galvanised steel, concrete, and wood. It serves as an essential trade consumable for sealing gutter joints, fixing downpipes, bedding slates and tiles, and securing loose felt.