H-BAU PENTAFLEX KB® Metal Water Stop Bars

PENTAFLEX KB® metal water stop bars are fully coated on both sides with a special coating to provide reliable waterproofing at concrete joints. The bond between the special coating and new concrete prevents water infiltrating the joint and an embedment depth of 30 mm is enough to withstand water pressure of up to 5.0 bar. The high elasticity of the coating ensures reliable sealing when the concrete structural components shrink. PENTAFLEX KB®  metal water stop units are typically supplied in 2m lengths with a choice of 167 mm or 80 mm widths. The bonding surfaces are protected with a film on both sides that is only removed immediately before concreting. Placement is simple with units  simply lapped along the concrete length and without the need to plan day joints for concrete pours.

Technical Evaluations:

NHBC recognition. ETA-15/0003

Typical applications include:

  • Underground structures
  • Traditional concrete and Twin Wall basement walls



  • Simple installation
  • Reliable immediate performance
  • No need to weld joints offsite
  • Simple lap joints with no need to plan concrete day joints


Whatever you're planning.

We accompany you with expert advice for every application. For a working day in which many things become simpler and the joy of successful results increases.

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