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Norcros Rock-Tite Brush-In Grout 15Kg ( Blanched Almond | Steel Grey | Tropical Ebony) – Bulk Buy and Pallet Deals

Norcros Adhesives

Norcros Rock-Tite Brush-In Grout

Exterior Porcelain & Stone System

Norcros Rock-Tite Grout is a cement-free brush in permeable jointing compound designed for filling joints from 3mm wide between concrete, natural stone and porcelain paving slabs which have been laid onto a solid permeable base using Norcros Rock-Tite Mortar. It has been specifically developed to match the Norcros 4 into 1 and Flexible Wide Joint Grout colours to complement tiles used indoors and to create a continuous living space.

It is easy to use and waste-free. Any left-over grout can be poured back into the tub and stored by covering with water to at least 50mm above its surface.

  • All weather paving joint compound
  • Suitable for all types of paving slab including porcelain Cement-free
  • Air-drying
  • Matches Norcros cement-based grout colours
  • No waste
  • Long lasting
  • Strong & flexible
  • Environmentally friendly

You can add this product to your order, however there must be a pallet/half/three-quarter-pallet in the cart to checkout.

Need a custom deal? 0333 344 2655 or info@buythepallet.co.uk

Norcros Rock-Tite Brush-In Grout extended information

Walk on Drying Time (In dry, warm conditions with moderate humidity [~ 65% RH]): 24hours


Paving Dimensions (mm):Approximate Coverage per 15kg Tub
Width:Length:Thickness:Joint Width:


Norcros Rock-Tite brush-in Grout colours


The ground must be free-draining and the sub-base permeable. It should be noted that the grout is air-drying and that joint failure will occur if the sub-base is subject to continuous wetting. Suitable falls should be incorporated into the sub-base to allow water to drain away. It is recommended that slabs are laid into a bed of Norcros Rock-Tite Mortar.

When used on a free-draining permeable sub-base, Norcros Rock-Tite Grout can be applied in most weather conditions down to a temperature of 3oC. Do not apply in heavy or prolonged rain as this will extend the curing process and may result in an uneven surface texture once the grout has cured.

Norcros Rock-Tite Brush-In Grout APPLICATION

Concrete/Natural Stone Paving:

Thoroughly saturate the area to be jointed with water using a hose, ensuring that the paving remains saturated throughout the application process. The surface and edges of porous slabs should be sealed, preferably before laying with a suitable preparatory sealer. If in doubt trial an inconspicuous area to check for staining before jointing commences.

Simultaneously spread and wash small quantities of Norcros Rock-Tite Grout across the surface of the paving using a broom/ squeegee and a light jet of water which will aid the washing of the grout into the joints.
It is important that the slabs are kept soaked with water throughout the process and that the Rock-Tite Grout is not allowed to pile up on the paving.

Top up any low areas using the same application method.

Once all joints are filled, gently spray water across the surface to aid the final compaction process and remove any grout residues. A final light brush over with a clean soft hand brush will aid the removal of any loose grains.

Once the paving has dried and any free water has drained from the joints, it is recommended that the filled joints are lightly smoothed using a suitable finishing tool. This will improve the appearance of the joints and will also identify any low spots that may need topping up. Sweep the paving with a stiff clean, dry broom diagonally to the joints to remove any traces of the jointing compound.


The base must be permeable. Use the same application process as that used for concrete and natural stone however, only a small amount of water, sufficient to form a slurry, is required during the application process. See below Note** regarding thickness of paving.

Note** It is essential that a joint width not less than 3mm and depth not less than 25mm is maintained throughout the installation. If the paving material has chamfered edges or is less than 25mm thick it is recommended that a small gap is created under the lower edges of each paving slab during the laying process. The Norcros Rock-Tite Grout will flow into the gap created allowing a strong and stable joint to be formed.

Norcros Rock-Tite Brush-In Grout SETTING TIMES

In dry, warm conditions with moderate humidity (approximately 65% RH), Rock-Tite Grout will accept foot traffic within 24 hours. Full cure will be achieved within a few days. In wet or cold conditions drying times will be extended.


Store in dry internal conditions away from direct sunlight between 5oC to 25oC. The product has an 18 month shelf life from date of manufacture. It should be noted that puncturing the bag will cause the product to harden.


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