Tec 7 Roof Repair Compound is a unique roof repair compound formulated with Butyl Rubber to give a longer life span. It remains soft and flexible up to 20 Years After Application. It also contains Bitumen for waterproofing, and glass fibre for greater strength. Suitable for use in dry or wet conditions and on flat or pitched roofs. this highly versatile material can be used with most roofing materials including: metal, galvanised steel, zinc, lead, copper, tin, wood, insulation, brick, concrete, roofing, asphalt, shingles, PVC and polyester. Available in 4 pack sizes to suit every job.