WB DUO FLEX – is a waterproofing characterized by increased flexibility and based on water dispersion of plastics. It creates a neatly adhering and tight coating on elements exposed to water and allows for covering cracks and scratches. The product is resistant to UV rays, chlorinated water, oils, gasoline, municipal sewage, and other factors. It inhibits the process of concrete carbonation and does not cause steel corrosion. Thanks to the low water vapor diffusion resistance, it allows for the evaporation of water from damp structures. The product can be used horizontally and vertically on both internal and external surfaces.

When it is used for the waterproofing of balconies or terraces, it is recommended to use it together with the WB MEMBRANE.

Product preparation:

Before combining the liquid with the reactive powder, both components should be mixed in a proper manner. The mixture can be mixed both by hand and with a stirrer. Any lumps must be removed. The material should be used immediately after mixing as it thickens over time as a result of cement hydration.


WB DUO FLEX waterproofing should be applied to the surface with a brush, steel trowel, or a spraying device. Apply the first thin layer onto the surface to close the pores. The second layer should be applied only after the first layer has settled (after approximately 4 hours). During a single application, the thickness of the layer must not exceed 2 mm (recommended thickness – 1 mm) and the total thickness of all applied layers must be not lower than 2 mm. Smoothening the surface with a steel trowel can be done within a few minutes from the moment of applying the product. In the case of vertical and horizontal corners, as well as expansion joints, WB Tape sealing tape should be additionally used. Do not apply the product during precipitation of any kind. Protect freshly applied coatings from rain and frost for about 12 hours. In particularly hot and dry conditions, protect the product against rapid drying by using damp mats. Tiling can be started after 4-5 days from the moment of product application.


A drill with a mixer, brush, steel trowel, spraying device. Tools should be washed immediately after work. After hardening, remove mortar residues mechanically.

Storage and transport: WB DUO FLEX waterproofing should be transported and stored in a tightly closed package, at temperatures above zero degrees centigrade. Protect the product against frost and direct sunlight. Store in the original packaging.

Storage period:
  • 12 months in original sealed containers
Packaging: 10 kg
  • Consumption: 0.5 to 0.6 kg/m2 per mm layer thickness
Material consumption:
  • Waterproofing WB Duo Flex 20 kg – sufficient for: 13 do 15 m
Izolacja tarasu




Karta techniczna produktu – pobierz


Additional information

Weight 20 kg

10KG, 20KG

Jak możemy Państwu pomóc?

How can we help you?

Służymy Państwu pomocą. W przypadku pytań dotyczących naszych produktów i rozwiązań systemowych prosimy o kontakt telefoniczny.

We are here to help you. If you have any questions pertaining to our products and system-based solutions, do not hesitate to call us.

Bądź z nami na bieżąco!

Stay with us on a regular basis!

Subskrybuj nasze kanały i śledź nasze działania oraz dodawaj opinie :)
Subscribe to our channels and follow our activities and add opinions :)




Water Block to produkty klasy premium przeznaczone dla klientów ceniących rozwiązania na lata. Długoletnia współpraca technologów z Polski i Szwajcarii pozwoliła na stworzenie kompletnych rozwiązań systemowych dla takich elementów konstrukcyjnych budynku jak balkony, tarasy, dachy oraz fundamenty. Water Block z powodzeniem stosowany jest wszędzie tam, gdzie ważne są takie parametry, jak duża elastyczność, odporność na niskie temperatury, czy wytrzymałość na parcie wody.

Water Block are premium class products designed for customers who value solutions for years. Long-term cooperation of technologists from Poland and Switzerland has allowed us to create complete system solutions for such structural elements of the building as balconies, terraces, roofs and foundations. Water Block is successfully used wherever parameters such as high flexibility, resistance to low temperatures or resistance to water pressure are important.

Godziny otwarcia

Hours opening