Waterproofing layer installation (white tank)

The term ‘white tank’ refers to a construction method in which the floor slab and external walls of a building form a sealed tank made of waterproof concrete (WU concrete), thereby eliminating the need for an additional, surface-level waterproofing layer on the external surfaces. This construction method is regulated by the standards DIN EN 206-1, DIN 1045-2 and the guideline “Waterproof concrete structures” (WU guideline) of the German Committee for Reinforced Concrete (DAfStb). 

• If the upper section on the screed and the drain body need to be covered with a waterproofing layer
• For the procedure, see ‘Waterproofing layers for drains’