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Coating Process

Weather and Concrete Conditions

The Xypex treatment must not be applied under rainy conditions or when ambient temperature is below 40°F (4°C).

Because Xypex requires moisture to initiate the crystalline waterproofing process, all concrete, whether fresh or old, must be saturated with water. (Refer to “Wetting Concrete” under Preparation section.)

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The concrete surface must be a minimum of 20 hours old before application of the Xypex coating treatment.

For fresh concrete, the period between 24 hours and 72 hours is the optimum time within which to apply Xypex, as the new concrete is still ‘green’ and requires very little pre-watering.

Coverage

For normal surface conditions, the coverage rate for each Xypex coat is 1.25 – 1.5 lb./sq. yd. (0.65 – 0.8 kg/m2).