Male Workman Applying Bitumen Mastic On Roof Flat Of Building In London

male workman worker rolling bituminous mastic applying bituminous primer roofer construction roof flat painter service locked off tool protection bitumen work brush builder rooftop waterproofing membrane insulation waterproofing modified roof coating waterproof reinforcement coating roofing roller brush london daytime day outside roof covering building primer repair roller site equipment maintenance hi vis safety concrete surface