Mineral waterproofing systems have the advantage of excellent bonding properties of the waterproofing material to mineral substrates, the bond between the individual waterproofing layers is excellent too. The longevity of such systems is ideally the lifetime of the building.
To avoid moisture rising through the wall due to capillary action, it is necessary to install a horizontal barrier beneath the wall made from KÖSTER NB 1 Grey (mixed with KÖSTER NB 1 Flex) or the crack bridging material KÖSTER NB Elastic.
To harden the substrate the bottom slab is primed with KÖSTER Polysil TG 500. At the wall floor junction a fillet made from KÖSTER Repair Mortar plus is installed to prevent stresses in the subsequent waterproofing layers.
The area waterproofing is normally achieved with KÖSTER NB 1 Grey mixed with KÖSTER NB 1 Flex. In case of pressurized water the waterproofing needs to be done with the KÖSTER KD System.
Alternatively the crack bridging waterproofing products KÖSTER NB Elastic Grey or KÖSTER NB 4000 can be used to waterproof the floor slab. KÖSTER SL Premium is ideal for protecting the surface.
Always adhere to the specifications in the respective Technical Guidelines.
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