Very often in waste water treatment, leakage happens due to the presence of cracks in the concrete or failed joints. Sika has developed a system that can be directly applied over the crack zones or the failed preventing leakage to occur.

The Sikadur-Combiflex® SG system is the second generation development of the globally proven Sikadur-Combiflex® with even improved performance such as advanced adhesion properties The unique system consists of the Sikadur-Combiflex® SG tape and the Sikadur® adhesives. It is widely used as joint waterproofing in watertight concrete structures.
Water-tightness of the structure to prevent loss of water and pollution of the environment due to sewage water penetrating into the soil can be achieved by lining with a chemical resistant, flexible and abrasion resistant Polyurea. Due to the high elongation at break and flexibility, dynamic cracks according EN 1062-7 class B 4.2 can be kept watertight with Sikalastic®-8800.