Description:
This roofing assembly consist of EPDM single-ply (ethylene propylene diene terpolymer) single-ply rubber membrane loose laid over the lightweight foam concrete screed & a separation layer, covered by extruded polystyrene insulation board followed by another separation layer and finishing of pre-cast concrete pavers or gravel.
Features and Benefits:
■ The membrane is maintained at a nearly constant temperature, close to the temperature of the building's interior; this minimizes the stresses on the membrane by reducing the harmful effects of thermal cycling and excessive heat.
■ The waterproofing membrane is protected from weathering, foot traffic and other types of physical abuse - both during and after construction.
■ Allow year-round construction since the roof is waterproofed first, then insulated.
■ Permit easily removal and re-installation of the ballast and insulation for making repairs or for constructing additional stories. In addition, a protected membrane roof provides an environmentally preferred option to reuse the insulation.
■ Allow for a range of ballast options - stones, precast paving slabs, green roof, interlocking stone or concrete - depending on use and aesthetic considerations.
■ Eliminate the need for a separate vapor retarder.
■ It offers exceptional durability to extend the life of the plaza or roof.
■ Characteristics that contribute to this superior overall system performance include;
- Cyclical membrane fatigue resistance.
- High resistance to ozone, weathering and abrasion.
- Flexibility in low temperatures.
- Superior resistance to extreme heat and fire.
- Thermal shock durability.
- Ultraviolet radiation resistance.