Lead Mate Sealant is a specialist, neutral-cure, low-modulus sealant designed specifically for fixing and sealing lead flashing into brick, stone, and concrete. It provides a fully waterproof, permanently flexible joint that will not crack, shrink, or stain surrounding materials. Formulated for exceptional adhesion to soft metals including lead, brass, copper, and zinc, it offers a modern, reliable alternative to traditional mortar bedding. Ideal for roofing, weatherproofing, and external building fabric applications where long-term durability is essential. (Supported by product listings showing it is a specialist neutral-cure sealant for soft metals and flashing applications
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