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Proofex Cavity Drain



Proofex Cavitydrain is used where sub- structures are constructed in concrete designed to minimise water entry in accordance with BS 8102, 1990 ‘Protection of structures against water from the ground’, Type C. Any water ingress through the structural concrete will not enter the internal environment because Proofex Cavitydrain provides a continuous water and damp proof drainage former to connect with drainage channels or outlets cast into floor slabs. Water leakage problems which show up in the construction stage can be remedied before the drainage layer is put in place, adding to the security of the waterproofing system.


  • Internal application in a controlled environment increases security against waterproofing failure
  • Provides a continuous drainage former and damp proof barrier
  • High compressive strength
  • Conical voids enable high load transfer to structural elements
  • Chemically resistant
  • Easily fixed and installed using mechanical fixings


Proofex Cavity Drain main image

Proofex Cavity Drain

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