Polyglass Polyshield Mineral TS4 high performance roofing felt. This is an elastomeric distilled bitumen felt with continuous thread non woven polyester fabric modified with polypropylene and reinforced and stabilised with glass fibre. This is KM Roofing Edinburgh’s favoured flat roof covering and is used on all domestic roofing projects by our flat roofers. Polyshield Mineral TS4 carries a 20 year guarantee and BBA certification along with AA Fire Rating which meets building control regulations. Call KM Roofing Edinburgh today for a free estimate on any flat roofing project. KM Roofing Edinburgh are members of the National Federation of Roofing Contractors- NFRC.