M/s Xtralite are the largest manufacturers of U.V. Protected Polycarbonate roof lights and structured glazing in the UK. They have a complete range of roof lights, both individual and continuous, with various shapes available. From standard roof lights, to tailor-made large area roof glazing. Xtralite products provide outstanding performance and aesthetics, resulting from many years of continuous development. All roof lights are manufactured to exacting standards using high quality materials to ensure durability and resistance to weathering.