Flexcrete Cure-Seal WB is a non-degrading acrylic resin sealer which forms a clear, elastic, durable matrix on the surface of cementitious substrates.

When used as a curing membrane on Flexcrete mortars and coatings, it conforms to the requirements for water retention given in ASTM C309. It can also be used as a sealer coat for concrete.

Flexcrete Cure-Seal WB is also used as a clear lacquer which can be applied to damp but surface-dry substrates to form a tough, glossy finish. When used in combination with Flexcrete Cemprotec E-Floor, it seals in and retains aggregate to provide enhanced slip and abrasion resistance.

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• Features & Benefits
• Compliance
• Application – Curing Membrane
• Application – Floor Sealer
• Cleaning and Storage
• Coverage
• Application Top Tips
• Technical Data

Features & Benefits

• Convenient alternative to traditional curing aids such as polythene sheeting, damp hessian or sand
• Spray applied when used as a curing membrane
• Can be roller applied on floors after overnight cure
• Allows controlled release of substrate moisture
• Odourless water-based product, ideal for internal use
• Does not degrade on external exposure
• Non-yellowing, light gloss appearance
• Does not blush when wet
• Enhances adhesion of subsequent coatings
• Retains aggregate broadcast for slip resistant flooring

Compliance

BBA Approved, Certificate No. 05/4276.

Application – Curing Membrane

Flexcrete Cure-Seal WB should be spray applied over freshly placed Flexcrete cementitious mortars and coatings. Apply as soon as practicable after final finishing when residual surface water from trowelling has evaporated (generally within 15 minutes).

Use a conventional pressure spray with a fine nozzle at 5- 7m²/litre, taking care to ensure complete and even mist application. Hold the nozzle approximately 0.5-1m from the surface and spray back a nd forth over small sections (circa 1-5m²).

For maximum efficiency, if the surface is subject to strong sunlight or drying winds, apply a second mist coat once the first coat has formed a film but is still tacky. The waiting time is generally 15 minutes depending upon climatic conditions.

Treated surfaces must be cured for a minimum of 72 hours before overcoating with a Flexcrete specialist membrane to ensure maximum adhesion.

Application – Floor Sealer

The areas to be treated must be free from any standing water and all unsound material including dust, oil, grease, corrosion by-products and organic growth. Cure sanded Flexcrete Cemprotec E-Floor for a minimum of 4 hours before proceeding.

Flexcrete Cure-Seal WB should be poured out and spread to a coverage rate of 5m²/litre with a rubber squeegee and then back rolled to provide an even finish. Coverage may be affected by the particle size of the sand.

Allow to cure for a minimum of 12 hours before subjecting the area to any foot traffic. Regular trafficking of the area should only commence after a curing time of 5 days.

Cleaning and Storage

All tools should be cleaned with water immediately after use.

Materials can be stored for 12 months in dry, frost free conditions in original sealed containers. Protect from temperatures ≥40°C for prolonged periods.

Coverage

Used as a curing membrane:

Used as a sealer on sanded surfaces:

Application Top Tips

1. Do not over apply or allow to pond on the surface
2. Avoid entrapping air as this may result in a milky finish
3. Regularly clean spray nozzles to avoid blockages
4. On floors, consider pouring in a snaking pattern before spreading and back rolling to ensure even coverage
5. On large areas, mark out an area equating to the coverage indicated in the guide table, pour out the sealer in a snaking pattern
6. Where tape is used to delineate areas, remove before drying to leave a clean, sharp edge
7. For external heavily trafficked areas, consider using an alternative epoxy or polyurethane coating
8. Cold Weather Working (See separate Guide)
• ≥3°C. on a rising thermometer
• ≥5°C. on a falling thermometer
• Do not use any product which has been frozen

Technical Data