Three types of waterproofing technologies all offering protection against hydrostatic pressure are offered: 1. Crystalline which works by penetration of the product into the concrete to provide in-depth waterproofing. 2. Slurries and mortars which form a waterproofing barrier. 3. Bentonite / HDPE combined in a roll as a dual waterproofing solution. In addition, waterproofing layers protect the concrete to a certain extent from exterior influences, such as carbonates, chlorides, sulphates and nitrates. Vandex becomes an integral part of the concrete structure, forming with the concrete a strong and durable homogeneous body.