Tecnorap USA
CWS Admix

CWS Admix An Unrivaled Concrete Waterproofing Admixture

Concrete, when created and applied in accordance with today’s exacting standards, is a highly versatile and durable construction material. However, concrete can be exposed to a range of factors during production and placement that can decrease its performance once hardened. If not mixed and placed with care, your concrete can be vulnerable to water penetration. This is often the result of a high water-to-cement ratio, poor compaction, deformed or badly installed water bar, inadequate curing, shrinkage cracks, or settlement. Though you may not see a leak, your concrete could have moisture issues at play that are undetected. CWS Admix, Tecnorap USA’s concrete waterproofing admixture, disperses a crystalline reaction throughout the concrete when added to a fresh mixture to ensure maximum, long-lasting protection.

CWS Admix Logo

How CWS Admix Works

CWS Admix is a blend of moisture-activated chemicals, high-grade fine aggregates, and selected high-performance cements. When mixed with water and applied to the surface or added to fresh concrete as an admixture, the solution’s crystalline chain reaction is ignitiated, penetrating far into the concrete’s fissures and cracks. CWS Admix repels moisture, providing watertight concrete, while still allowing concrete to breathe. The formula will reactivate when in contact with any future moisture, proactively resealing the concrete for the long haul.

Product Benefits

  • Lifelong waterproofing that won't deteriorate
  • Immediate protection, eliminating delays
  • Dormant waterproofing protection
  • Protection from steel reinforcement corrosion
  • Use with negative & positive water pressure
  • Breathability while remaining waterproof
  • Seamless, jointless, non-toxic, & self-healing
  • Water bar replacement in static construction joints
  • Faster activation with increased water exposure
  • Performance not reliant on adhesion or coating thickness

Suitable Applications

  • Concrete basements
  • Water tanks & towers
  • Reservoirs
  • Swimming pools
  • Water treatment works
  • Dams
  • Canals
  • Harbors
  • Concrete pipes
  • Lift pits

How to Use CWS Admix

To be an effective concrete waterproofing admixture, CWS Admix should be applied at the initial construction stage when possible. The solution should be added to fresh concrete at the time of mixing to guarantee the product’s innovative waterproofing properties are immediately active throughout the concrete. This will ensure superior lifelong protection.

Benefits of CWS Admix
CWS Admix Comparison to Other Waterproofing Methods
CWS ADMIX – Technical Data Sheet


Site references outside of the USA courteously supplied by Radcrete Pacific Pty Ltd , Sydney Australia.

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About Tecnorap USA

With headquarters in Henrico, Virginia, Tecnorap USA provides many of the country’s biggest industries with premier, unrivaled concrete waterproofing and protection products. Tecnorap USA is the U.S.-based division of parent company, Tecnorap Systems Solutions, Inc. and the only U.S. manufacturer representative and distributor of Radcon Formula #7® and CWS Admix products. Tecnorap Systems Solutions, Inc’s products have been used in over 80 countries since 1975.