Torched (with flame) system

POWERDECK B, EUROTHANE Bi-3/Bi-3A on wood support structure - membrane partially bonded with torch-on system

ROOF SYSTEM DESCRIPTION

1. Support: wooden bearing structure.
2. Partition layer and vapour control layer. With a wooden bearing construction the partition layer out of rough glass fibre or polyester is installed firstly. Then the underlying layer (reinforced bitumen with polyester) is nailed. The vapour control layer is then torched on or bonded to that layer. If the bearing surface has an equal surface, the vapour control layer can be bonded onto this, with the exception of the seams / overlaps where a loose strip will be provided.
3. Thermal insulation boards POWERDECK B, EUROTHANE Bi3/Bi-3A,  size 1200 mm x 600 mm, preferably mechanically fixed with a minimum of 4 screws per board. Exact number of screws required is calculated on the basis of the wind-load. Screws in insulation panel corners are set in a zone of 100 mm x 250 mm from the edge of every panel, the 250 mm length being measured along the length of the board. The screws and washers must meet the demands of EUtgb class II. The washers have to be compatible with the screws used.
4. Perforated bituminized glass fibre with foil to be torched, 15% perforations. This perforated layer can be dropped when a venti-layer membrane is being used.
5. Waterproofing: single- (or multi-) layer bituminous membrane.