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Colour Surface Hardener

PICSPAVE Colour Surface Hardener (CSH) is a pre-mixed, ready to use, colour hardener comprising of graded crystalline silica quartz aggregates, a blend of cements and a unique proprietary chemical admixture package.


When applied to fresh wet concrete and imprinted with textured imprinting mats to authentically reproduce natural stone, slate, brick, tile or wood paving PICSPAVE CSH forms a toughened,attractive and wear resistant surface that is slip and stain resistant.

Special Properties

  • Imparts elastic properties to the concrete surface allowing deep texture and precise detail from all imprinting mats.
  • Special Admixtures minimise risk of plastic shrinkage enhancing strength and appearance.
  • Ultra Violet (UVA) stable pigments conform to BS1014 guarantee colours will not fade as a result of direct sunlight.
  • Improved workability and low water demand create an exceptionally tough, durable surface.
  • Available in 20 standard colours that are inter-compatible and can be blended together to achieve special colours with confidence.

Application Instructions

The concrete slab should be in accordance with the PICSPAVE specified concrete mix and finished in accordance with PICSPAVE Typical Specification Number 102.

When surface bleed water has evaporated, CSH is evenly applied by hand in one application (two equal applications when being used at 5kg/m2), care being taken not to cast CSH long distances or in strong wind. Immediately after wetting out, CSH must be worked into the surface using a magnesium float until the slab is uniform in colour and level.

Final finishing to close pores and remove undulations prior to imprinting must be carried out with a steel trowel. Careful finishing of the slab edges and finishing of the construction joint where adjoining slabs are to be poured must be carried out prior to application of Release Agent and placing of PICSPAVE imprinting mats.

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01635 202224


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