Kemper System
Excellence in Waterproofing, Roofing and Surfacing Technology

Werner Brölsch House in Duisburg-Neumühlen is part of a larger complex belonging to a protestant charity. The multi-storey building dating from the mid-1970s houses a home for the elderly.

The internal, window-less bathrooms were causing headaches. The lack of an effective waterproofing system had gradually led to stains and discoloration on the ceilings in the lower storeys. In the search for a solution, the use of the solvent-free KEMPEROL 2K-PUR was recommended to the site manager by the roofing and building contractor. This odourless liquid-applied resin was specially developed for sensitive areas where odours would be unacceptable. KEMPEROL 2K-PUR enabled the following demands to be met reliably:

The building had to remain occupied during the refurbishment phase; work had to be carried out storey by storey to avoid having to move the occupants.
The work had to be carried out within very short periods and the noise level had to be kept to a minimum.
The window-less bathrooms could not be ventilated to the outside so any odours would escape directly into the interior.
To exclude all fire risks, work with naked flames was prohibited. Plastic floor finishes and rubber seals have been used throughout the building.
Each bathroom has a floor area of only approx. 7 m2. The waterproofing system chosen should be easy to install without excessive cutting work and additional materials.
The thickness of the system should be kept to a minimum because a new ceramic tile floor finish must be laid over the waterproofing.

The refurbishment work involved a total of 56 bathrooms each measuring 7 m2. After the bathrooms had been gutted and the old floor tiles removed, new pipework was installed and a new screed laid. To optimise the bond between the waterproofing system and the substrate, a coating of KEMPERTEC D-Primer was applied, followed by the odourless KEMPEROL 2K-PUR Waterproofing System which is applied in two coats: the first coat is applied to the substrate and the reinforcing fleece inlay rolled out on this without any air bubbles; afterwards, the surface is saturated with a second coat wet-in-wet. Once fully cured, the surface was finished with KEMPERTEC EP-Primer and Quartz Sand to provide protection against alkalis. A new screed was then laid on this ready for the new ceramic tile floor finish.

KEMPEROL 2K-PUR met the expectations. At no time have the occupants ever complained of any smells. Nor any of the staff. And the employees were able to work in the small, unventilated rooms without any problems.

Project report in PDF format