Bond It Roof-Mate High Quality Roof and Gutter Lap Jointing Sealant Black 310ml Description: A polymerically reinforced lap jointing sealant used to prevent leaks in gutters and downpipes. Uses Bond It ROOF GUTTER MATE is suitable for repairing and maintaining general roofing and roof drainage systems. It forms a flexible seal capable of accommodating 5% movement. Remains flexible for up to 15 years. It is ideal for use on: metal; construction grade plastics; paint; stone; brick; and bitumens. Preparation Ensure all surfaces are clean, dry and free from grease or any contaminants that may hinder adhesion. Loose materials and signs of corrosion must be removed prior to application. Application Apply using a standard sealant gun. Cut tip from cartridge, be careful not .