Sika Lead Sealant (295ml, Grey) is a professional-grade, low-modulus, neutral-cure silicone sealant specifically engineered for sealing and bonding lead flashing, sheet metal, and other soft metals. Formulated as a reliable, modern alternative to traditional mortar, this specialist roofing sealant delivers a permanently flexible, weatherproof barrier that will not crack, shrink, or crumble.

• Safe for Soft Metals - Specialised neutral-cure chemistry guarantees zero staining or chemical corrosion on lead and copper.
• Mortar Alternative - Replaces traditional cement/mortar mix for pointing lead flashing into brick, stone, and concrete walls.
• Outstanding Flexibility - Accommodates up to +/- 25% joint movement to effortlessly absorb the high thermal expansion and contraction of metal sheets.
• Low Dirt Pick-Up - Keeps rooflines looking pristine by resisting dust, soot, and airborne debris.
• Weather & UV Proof - Will not crack, peel, or harden across extreme service temperatures ranging from -50°C to +150°C.
• Low Shrinkage - Vulcanises with less than 5% total shrinkage to protect structural joint integrity.