Everbuild Everflex Roof and Gutter Sealant is a premium-grade, black sealant ideal for waterproofing roofs, gutters, flashings, and chimneys. This high-performance, butyl-based formula offers long-lasting protection against leaks, harsh weather, and UV rays. With exceptional flexibility, Everflex sealant adapts to building movement, preventing cracks and maintaining a weatherproof seal. The convenient 300ml cartridge ensures easy application for both interior and exterior sealing projects.