A polymerically reinforced lap jointing sealant and adhesive used to prevent leaks in gutters and downpipes. Forms a flexible sealant. Suitable for repairing and maintaining general roofing, roofing drainage systems and cracked down pipes etc. It is ideal for use on metal, construction grade plastics, paint, stone, timber, brick, bitumens and asphalt. Waterproof and weatherproof. External use.