Waterproofing of construction joints in the wall/floor junction

For retroactive waterproofing of the wall-floor junction, the boreholes have to be drilled transecting the construction joint. The borehole should be drilled approximately into the middle of the construction joint.

In case of flowing water or when it is not certain if the crack is dry or wet, KÖSTER 2 IN 1 is injected. KÖSTER 2 IN 1 is a unique CE certified product, which in dry cracks forms a solid body resin, in wet cracks a water replacing foam. This saves time and logistics on the construction site. It is injected twice, 10 – 20 minutes apart, to ensure that the joint is permanently and elastically sealed.

Alternatively, KÖSTER IN 2 is a solvent-free, 2 component polyurethane injection resin which stays permanently elastic, allowing a permanent joint sealing even in case of movement of the structure.

All KÖSTER injection resins are installed with the KÖSTER 1C Injection Pump via injection valves called “Packers” into the cracks or joints. Depending on the application, different packers are available.

The KÖSTER Superpackers are used for all applications injecting from low to high pressure. KÖSTER One-Day-Site Packers have an extra one-way return valve. The bottom portion of the packer prevents the injection material from flowing back out of the wall, so that the upper part of the packer can be removed directly after injection and the borehole stays pressure sealed. The drill hole can be sealed immediately after the injection works.

Always adhere to the specifications in the respective Technical Guidelines.



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