Founded in 1989, JJ Roofing Supplies Limited is now the largest roofing merchant in North London with seven stores, an e-comm ... erce outlet, an ever-expanding staff which currently stands at 80. JJ Roofing Supplies core business focuses on sourcing and supplying quality roofing materials to trade and commercial customers at competitive prices. JJ Roofing Supplies mission statement hinges around the very best customer service, outstanding value and second-to-none technical expertise; the staff team work as a cohesive and dynamic unit to ensure delivery on this every day. read more