Penosil 444 Butyl Sealant Weatherproof Mastic Roofing Guttering Flashings Grey

PENOSIL Butyl Sealant 444 is a durable, weatherproof butyl mastic designed for a wide range of exterior sealing applications.

It is ideal for weatherproofing and sealing exterior joints where a long-lasting, flexible bond is essential.

This high-performance sealant adheres effectively to a variety of common construction materials, including wood, concrete, metal, PVC, and glass, ensuring reliable protection against the elements. Perfect for projects requiring a permanent plastic connection, it provides excellent resistance to harsh outdoor conditions, making it a trusted solution for exterior sealing work.