Field report: Evangelical Hospital Bethel (EvKB) Kantensiek multi-storey car park

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Key facts: Repair of open decks

3 open decks including entry and exit ramps
Authorised Contractor
Kögel Bau GmbH & Co. KG

Field report: Evangelical Hospital Bethel (EvKB) Kantensiek multi-storey car park

The refurbishment with Triflex liquid applied waterproofing secured the car park of the Evangelical Hospital Bethel (EvKB), Kantensiek. Leaky joints and cracks in the waterproofing meant that rainwater and chlorides dissolved in de-icing salt had reached the interior of the building. This resulted in corrosion damage to the steel girders and building reinforcement. The traffic and mobility management office therefore commissioned the Bethel Institution to repair the three open decks concerned. Site manager Detlev Kroos from the DLZ Bau + Technik of the Bethel Institution approached Kögel Bau GmbH & Co. KG, Bad Oeynhausen, with the requirement for an elastic seal that would safely integrate the numerous details such as joints and floor drains and at the same time reliably protect against moisture ingress. Planners, fabricators and building owners jointly decided in favour of the Triflex ProPark version 2 top deck waterproofing system based on polymethyl methacrylate (PMMA).

Refurbishment requirements

  • Refurbishment scheme from a single source
  • Rapid and sustainable refurbishment
  • Integration of numerous details into the waterproofing
  • Permanently elastic system
  • No interruption of operation
  • New non-slip coating
  • Reliable protection against moisture ingress
  • Maximum safety for users

Refurbishment steps overview

  1. Chiselling the joints
  2. Chiselling out the chloride-contaminated concrete and replacing it with fresh concrete
  3. Sealing the joints in loop form with Triflex ProDetail and Triflex Special Fleece
  4. Sealing the open deck areas including the access and exit ramps with Triflex ProPark (version 2)
  5. Producing the highly abrasion-resistant wearing layer using Triflex Cryl M 264
  6. Removing rust as well as lime and salt deposits from corroded steel beams and coating with a new protective coating
  7. Applying marking lines, turning arrows and symbols for pedestrians and people with disabilities on the open deck areas
  8. Coating the staircase with Triflex Cryl Finish 209

More references

Triflex HeatTec
Triflex ProPark