KM Roofing Edinburgh, installing a new insulated flat roof system in Murrayfield, Edinburgh. The original flat roof covering has been stripped off and a 4 layer high performance flat roof system installed with 100mm insulation. All flat roofing work by KM Roofing Edinburgh. The new flat roof system comes with AA fire rating, 20 year warranty and is BBA approved. All flat roofing felts supplied by Polyglass U.K. KM Roofing Edinburgh are approved installers for Polyglass roofing felts.