Waterproofing on terraced roofs made of PVC membranes is suitable for wood, concrete, metal and thermal insulation of mineral wool or polystyrene. The PVC waterproofing is made in a single layer of material without the need to cover it with other materials as the PVC membrane is resistant to weathering, perforation, tugging, freeze-thaw cycles and UV rays. A properly waterproofing of the roof guarantees a lifetime of up to 30 years without any intervention.