Often water tanks have special requirements on the waterproofing system, such as being elastic with crack bridging capabilities. Other factors may be pollutants in the water, as is common with skimmer tanks. For such areas, a system with KÖSTER NB 4000 is exactly the right choice. KÖSTER NB 4000 can be used for sprinkler tanks, rainwater retention basins, water tanks, etc.
Always adhere to the specifications in the respective Technical Guidelines.