Cementitious Waterproofing

The GEMITE line of cementitious coatings are designed to protect reinforced concrete structures in two ways – for protection against chemical attack and as a structural waterproofing. Products are available in hand or spray-applied waterproofing (negative and positive) coatings for wastewater treatment facilities, water retaining structures, and concrete tanks and tunnels. Formulations for potable water applications meet the ANSI/NSF Standard 61 – Drinking Water System Components.

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Cementitious Waterproofing Applications:

  • Water Treatment Plants
  • Sewage Treatment Plants
  • Bridges
  • Dams
  • Railway & Subway Systems
  • Marine Cargo Ports & Docks
  • River Locks/Channels & Concrete Dykes
  • Parking Structures & Lots
  • Tunnels

Whatever your needs…
We have the solution.


CEM-KOTE FLEX ST is a highly flexible, polymer-modified cement membrane, which can be easily applied by brushing or with spray equipment for larger applications. The product is used for waterproofing of potable water or wastewater treatment facilities in new construction or restoration projects. CEM-KOTE FLEX ST is ANSI/NSF 61 Standard approved. The key advantages of CEM-KOTE FLEX ST are its flexibility, excellent adhesion, crack-bridging, and easy application to wet (even to completely water saturated) concrete. The breathable CEM-KOTE FLEX ST membrane allows substrate moisture to escape. Unique REINFORCING FABRIC NW is used to provide spanning and waterproofing of larger cracks. CEM-KOTE FLEX ST can be used for both – Negative / Positive side waterproofing of concrete structures.

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Cementitious Waterproofing Cem-Kote Flex ST


Cementitious Waterproofing Cem-Kote CW PlusCEM-KOTE™ CW PLUS
CEM-KOTE CW PLUS is a second generation crystalline waterproofing material. Its dual waterproofing action combines conventional crystalline waterproofing with a membrane waterproofing mechanism, producing extremely fast activation – a few days rather than weeks that are the norm for an old style crystalline waterproofing. CEM-KOTE CW PLUS also provides a very tough, hard and well-bonded surface with high abrasion and impact resistance. It can be used for negative and positive waterproofing as a brush- or spray-applied slurry. CEM-KOTE CW PLUS is approved for potable water applications under the ANSI/NSF Standard 61 – Drinking Water System Components.

A) CEM-KOTE CW PLUS used in the waterproofing of a concrete slab
B) CEM-KOTE CW PLUS is applied to the interior of reinforced concrete pipes to provide waterproofing and sealing of cracks under high water pressure
C) CEM-KOTE CW PLUS used as positive side waterproofing of concrete tanks in an industrial WWT facility
D) Potable water concrete tanks waterproofed on the positive side using CEM-KOTE CW PLUS


Cementitious Waterproofing Cem-Kote Flex CRCEM-KOTE™ FLEX CR
CEM-KOTE FLEX CR is a unique, highly flexible waterproofing, cement-based membrane, designed for protection of concrete exposed to high concentrations of sulfuric acid formed in environments with a high hydrogen sulfide concentration. CEM-KOTE FLEX CR is used in the repair and protection of digesters in wastewater treatment facilities, sewer systems, pumping (lift) stations, and other areas exposed to chemical attack. Insensitive to substrate moisture during application, the product is easily applied by brushing or spraying. CEM-KOTE FLEX CR has been extensively proven in many applications around the world.

A) CEM-KOTE FLEX CR applied to protect and waterproof the interior of manholes in a sewer system
B) CEM-KOTE FLEX CR used in the protection and waterproofing of a digester in a wastewater treatment facility


Cementitious Waterproofing Adi-Con CW PlusADI-CON™ CW PLUS
ADI-CON CW PLUS is an integral waterproofing admixture for Portland cement based concrete and mortars. The product is a dry, free flowing powder containing a blend of inorganic and organic chemicals, a small amount of sand and silica based materials. The reactive materials react with lime generated by the hydration reaction of cement and “plug” the capillary porosity, making concrete watertight under water
head pressure.

A) Parking garage construction using ADI-CON CW PLUS waterproofing admixture in concrete
B) Foundation slab construction using ADI-CON CW PLUS waterproofing admixture in concrete
C) Completed parking garage with ADI-CON CW PLUS waterproofing admixture in concrete


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