Vulk - Finduro Expose XA - Surface retarder

Curing Time

Drying time is dependent on the temperature. Washing of surface is usually able to be undertaken between 2-14 hours after application at 25˚C.

Accessible to foot traffic and light machinery immediately after cleaning the surface.

Estimating Data

Coverage 4-5m²/L Theoretical coverage is 80-100m² per 20 litre drum.

The properties of the substrate such as porosity and profile will influence the coverage rate and number of coats required.

Surface Preparation

Areas to be treated must be clean, dry, free from sawcutting debris.

Apply Expose XA undiluted to the surface.

Application Method

• Assess the application area so that a fixed volume of mixed material can be applied over a fixed area to determine the correct application rate.
• Apply Expose XA to trowel finished surfaces after the bleed water has dissipated but before the final ‘set’ has occurred
• Spray Expose XA to the surface in a consistent rate of approx 4-5m2/L ensuring even coverage to entire area, using two light coats in preference to one thick coat to avoid excessive pooling and runs on sloped finishes.
• Allow the material to fully penetrate the concrete surface.
• Check the tackiness of surface before washing by undertaking ‘S’ test, by running fingers over the surface with medium pressure to check the surface curing is sufficiently firm to proceed.
• Assess various sections for curing rate prior to proceeding with washing as areas of full sun or shade will cure at different rates.
• Wash the surface with suitable pressure via hose or pressure washer with a turbo head to achieve a consistent finish at the desired level of aggregate exposure. If washing on the same day minimal brushing should be required, weather dependent.
• Cure the concrete as per recommended curing techniques when sufficiently free of pooling water.