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repairs & grouts

CONCRETE RESURFACER

USER CATEGORY :

DIY TRADES COMMERCIAL

Packaging

  • 20KG

PRODUCT INFORMATION & RESOURCES

DESCRIPTION:
CEMIX CONCRETE RESURFACER is a high performance concrete resurfacing mortar, designed to refresh and repair aged concrete.

TYPICAL USES:
CEMIX CONCRETE RESURFACER can be used over the surface of existing concrete to produce a new wear layer as well as to fill in small defects, such as spalls and gouges. Suitable for use in interior and exterior applications in a domestic and commercial environment, including driveways, paths, patios, courtyards, garages and most vertical concrete surfaces.

ADVANTAGES
– High bond
– Flexible
– Durable

PREPARATION:
The substrate should be free of dust, grease, wax, oil, dirt, loose plaster, laitance, curing compounds, paint and all other friable materials and contaminants likely to prevent the adhesive bonding.

All substrates should be structurally sound, securely fastened and properly supported to eliminate any movement that may cause cracking.

Smooth surfaces on new and old concrete should be scabbled.

Prefill any dormant cracks with CEMIX CEMGROUT GP or CEMIX REPAIR & GROUT.

It is recommended to prime the surface with a CEMIX bonding agent before the application of CEMIX CONCRETE RESURFACER.

SUBSTRATE TEST:
The concrete substrate must be absorbent or porous. Test this by sprinkling water on the surface. If the water readily soaks into the concrete, the surface is suitable for application. If the water beads on the surface, the concrete is not suitable for application and any previous coatings need to be removed.

MIXING:
1. Add clean water to a mixing container. Use exactly 270ml of water per kg of product.
2. Add CEMIX CONCRETE RESURFACER slowly to the water, mixing constantly with a mixing paddle, until a smooth consistency is achieved.

Note: Do not aerate the mixture by stirring over vigorously or for too long.

APPLICATION:

1. Pour the mix onto the concrete area.
2. Spread the mix using a flat trowel, squeegee or broom onto the surface. Maintain a wet edge and apply enough pressure to ensure good contact between the resurfacer and the concrete.
3. Immediately apply a light broom finish for a slip-resistant surface, working in small areas to avoid foot trafficking.

Note: CEMIX CONCRETE RESURFACER has a working time of 15 minutes.

For vertical concrete surfaces, trowel or brush the mix directly onto the concrete area.

4. Smooth or brush the material to the desired finish.

Normal application is at a bed thickness between 0.8mm to 30mm.

For minor patching, application is up to 25mm in diameter and 12mm deep. Mix 4 parts powder to 1 part water and apply to the concrete surface with a steel flat trowel or putty knife. Allow for a minimum of 30 to 40 minutes at 23C before applying the finish coat.

Note: Honour any expansion or control joints.

DRYING & CURING TIME:
Drying and curing time depends on the substrate, substrate condition, climate, the type of application and the materials being applied. Allow 2 to 4 hours before foot trafficking and 16 to 24 hours before driving over.

CLEANING:
Clean tools with water immediately after use. If material becomes set on tools, remove using CEMIX CONCRETE DISSOLVER.

STORAGE & SHELF LIFE:
Up to 6 months when stored in the original, unopened packaging, in a dry place at 23°C and 50% relative humidity.

LIMITATIONS:
Avoid resurfacing your concrete when air or surface temperature is below or likely to go below or above 35°C. Avoid resurfacing driveways and paths during the heat of the day. Do not resurface when dew or rain is likely within 6 to 8 hours, or when humidity is very high.

If your project requires Building Consent, please email info@cemix.co.nz about the suitability of this product before use.

COVERAGE:
Varies according to the substrate condition. Approximately 0.9m2 per kg of product at a bed thickness of 0.8mm or 0.24m2 at a bed thickness of 3mm.