Soudal Silirub N silicone sealant in black: a general-purpose, low modulus, neutral cure silicone sealant. It has a very fast skinning time and final cure, and excellent tooling properties, so joints can be finished neatly. It adheres to most common construction materials without a primer, and it is resistant to UV, rain and snow. Clean and dry the joint surfaces before applying the sealant. Check that the sealant suits the materials in your joint, and follow the manufacturer's instructions on the cartridge for preparation and application.