Waterproofing Systems – Sheet Membrane
The purpose of sheeting membrane is to completely cover any imperfections in the substrate or background. They are numerous and include:
- Metal sheets in the form of copper or stainless steel flashing or trays.
- PVC sheeting Bitumen/polyethylene sheets
- Chlorosulphanated rubber (Hypalon)
- Torch-on sheeting consist of layers of polypropylene bitumen modified.
The sheeting membranes can be applied as fully bonded to the substrate or unbonded. In both cases sheets must be overlapped about 100mm wide and bonded to each other by adhesive or by heat welding. The advantages of sheeting membranes provide highly trafficable surfaces and have insulating properties.