The SIkaproof® system, exclusive system of Sika, it’s a liquid stuck membrane system to humidity treatment and also to waterproof cellars and underground structures. Its Flexible Thermoplastic Polyolefin (TPO), with a sealant grating and a nonwoven polar lining, provides a mechanic connection effect which stays attached to the concrete structure, avoiding any water flow between the membrane and the concrete.

Its use is suitable for:

  • Below concrete floors.
  • Below buried walls made with simple or double formwork.
  • Extensions or recovery projects.
  • Prefab constructions.


  • Cold application (with no preheating or flame use) and previous installation of the reinforcement armor and concrete dumping.
  • Full and permanent adherence to the concrete structure.
  • No water flow between concrete and membrane system.
  • High tightness tested by different regulations.
  • Easy installation with total joints sealing (no weld needed).
  • Outdoors and UV resistance during its installation.
  • High flexibility and excellent crack bridging capabilities.
  • High resistance to corrosive substances which can be located into buried water or on the ground.
  • It can be combined with other waterproofing systems approved by Sika.

QROMIA is an approved enterprise for the Sikaproof® system installation, and we have already applied more than 15.000 square meters in the Balearic Islands.

“A journey of a thousand miles begins with a simple step.”

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