Curtain injection for external waterproofing applied from the inside.
Exterior basement waterproofing from inside the building: in the case of renovation, it is not always possible to expose the exterior walls through excavation. For example, where the area to be excavated is built upon, traffic concerns impede the excavation, or the economic cost of excavation is deemed prohibitive. In this case you would first think of an internal (negative side) basement waterproofing, but in some cases, such as in historical buildings or buildings with special architectural requirements, this may not be desirable.
In these cases a curtain injection with KÖSTER KB-Pur Gel is possible; where the resin is injected through the wall from the inside to the outside. The resin reacts with water and binds it resulting in a waterproof, elastic mass. The injection is carried out with a special pump and through patented KÖSTER Distributor Lances. The injection material is dispersed on the exterior wall and in a short time reacts to a waterproofing layer. An alternative method is injecting KÖSTER KB-Pur Gel into the building member itself. This so-called “area injection” is possible in porous or hollow building materials. In this case the KÖSTER KB-Pur Gel also reacts with any water present to form a waterproof, elastic mass.
Curtain Injection Waterproofing System
Standard product features
- KÖSTER KB-Pur® Gel:
Solvent-free, water activated polyurethane gel. Depending on the amount of water added, a highly elastic waterproof massive or respectively foam hydro gel is formed. It does not promote corrosion and is designed and tested for use in drinking water environments. It can be used for curtain and area injection as well as for posterior waterproofing of dilatation joints.