3 Layer Bitumen based felt system
This job was carried out in July 2016 at Bishopstrow House Hotel and Spa in Warminster, Wiltshire. The roof was built up from a simple timber frame and ply boarded throughout. The roof consists of a 3 layer system of 1 x perforated bottom layer, 1 x 4 mm bitumen layer and 1 x brown bitumen based mineral felt, timber box frames with poly carbonate dome lighting and lead cover flashing into the wall behind.