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Aquabase EWI-226

EWI-226 Aquabase is a water-resistant, vapour permeable basecoat adhesive, ideal for applications in areas that are prone to water ingress. The basecoat actively repels water and creates a stable and smooth surface for plastering works; it can be used with an embedded Fibreglass Mesh to enhance the overall tensile strength of the system. Offering complete water-resistance, the product will ensure a completely smooth, durable basecoat that will stand the test of time.

Intended Uses

EWI-226 is suitable for internal or external use as a basecoat for render-only systems, or for securing polystyrene insulation boards to substrates. The product is highly recommended for insulating or rendering below the DPC area, or for plastering wetrooms and bathrooms. It is not intended for use in swimming pools.

Application Conditions

  • Aquabase should not be applied in rain or humid conditions, or if wet weather is expected before the adhesive has set.
  • Aquabase should be applied in temperate weather and should not be used in temperatures above 30°C. Likewise, if the materials or the substrate are frozen, or if there is any risk of frost damage within the first 24 hours, work should be postponed.
  • Setting time is typically between 24-48 hours, depending upon the environment and humidity.
  • EWI-226 should be mixed with approximately 5-6 litres of water per 25kg of dry mix.


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