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

For Use with Old or New Concrete

CWS Admix is designed to be used in a variety of different ways. No matter if your concrete is old and showing signs of damage, isn’t old but is unprotected against water permeation, or even if you haven’t laid your concrete yet, our product will enhance it to last. Our concrete admixture ensures that concrete is kept safe against water damage for decades. When you use CWS Admix, it works fast to strengthen concrete, starting by finding any weak spots in your existing concrete, filling them, and sealing them in the process. After that, the crystalline structure of the CWS Admix will harden, creating an incredibly strong barrier against any water that makes contact with the concrete in the future. While highly resistant to water, the barrier also allows for added breathability for concrete, ensuring that it is better-equipped for physical stress.

Ideal for Any Industry

People throughout a variety of industries have used CWS Admix to make their concrete surfaces stronger:


At airports, our admixture stands up to the intense conditions of planes taking off and landing, which can wear out traditional concrete quickly.

Swimming Pools

Concrete in swimming pools — which are designed to hold water — can wear out fast if water manages to permeate their lining. Having CWS Admix included in the construction means not having to worry about repairing your pool later.

Shopping Centers

Shopping centers see a large volume of foot traffic every day. And while that traffic may not look like much during the course of a single day, over time, it can result in worn down concrete, susceptible to water permeation. By adding CWS Admix to the concrete in your shopping center, you ensure that it can stand up to whatever traffic it has to handle.


Rooftops require reliable means of keeping water out. With CWS Admix, your rooftop will have not problems when it comes to keeping out moisture.

Much More

Because CWS Admix is so versatile, you can take advantage of it in any space where you’d normally use concrete. This is ideal for roadways, bridges, parking structures, and many more areas that encounter heavy traffic.

Install Today for a Worry-Free Tomorrow

The main advantage of our product is just how easy it is to save time and money over time with it. Traditional concrete is a good short-term solution for durable construction. But when it comes to standing up to decades of abuse, it’s incredibly common for concrete to crack and let in water, becoming worse over time without repair and application of sealant. Every time you repair and seal concrete, it costs you more money. By choosing CWS Admix, you’re taking advantage of a product that will quickly pay for itself. After use, your concrete will be completely resistant to water permeation within one application.

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


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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.