Evo-Stik Trade Lead and Gutter Silicone is a low modulus neutral cure silicone sealant, which when cured forms a tough elastic rubber with the ability to accomodate high movement. Evo-stik trade lead and gutter silicone bonds to most surfaces including lead, anodised and mill finished metals, painted steel, cast iron, brick tile, slate timber and most plastics including PVCu.