MASTIC D'ÉTANCHÉITÉ TOIT ET GOUTTIÈRES 295 ML

This premium butyl rubber-based sealant delivers instant waterproofing and permanent weatherproofing on roofs, gutters, downpipes, flashings, and joints. It forms a flexible, non-hardening seal that remains elastic beneath the surface, allowing for natural movement without cracking or shrinking. Suitable for both trade and DIY use, this sealant adheres strongly to materials such as bitumen, felt, metal, wood, masonry, and concrete, making it a reliable choice for long-term roof protection.