@ Hartseal we recommend GRP Roofing for all flat roofs. The points listed below encompass the features and quality that these flat roofing systems have to offer, ensuring that your roof is sealed for life.•Versatile: used on flat roofs, dormers, balconies, box gutters and valleys •Extremely tough and durable (cannot be cut with a knife) •BBA certified •Comprehensive guarantees •Seamless and jointless •Maintenance free •Product longevity: install and forget •Weather proof •Fire proof •Environmentally friendly (green roof friendly)The GRP roofing process ensures that your roof is completely sealed with no joints meaning that even the smallest drop of water can't seep through. There are many colours to choose from to meet your preference. Once installed you won't have to do any maintenance to the roof, leaving you with total piece of mind.