HARDSEAL is a high gloss concrete sealant specifically formulated for sealing and protecting dry concrete surfaces where a super hard surface is required. An additional coat is recommended for optimum performance.

HARDSEAL is based on 100% acrylic copolymer.


  • Excellent durability – good UV stability
  • Excellent Water Resistance
  • Reduces Efflorescence
  • Suitability for both Interior and Exterior application.
  •  Low tyre marking characteristics
  • Suitable for coating concrete, brick and terracotta.
  • Super hard, high gloss finish.

Colour Range

Available in Clear and 29 Standard Colours.


Suitable for application by broom, roller or airless spray to freshly cleaned concrete, brick, terracotta or slate.


5 – 7 Square metres per litre depending on profile and porosity of surface. First coat should be diluted with up to 20% solvent.


Application Temperature Min. 10 deg C, Max.30 deg C

Recoat Time Min. 4-6 Hrs.

Full Film Formation (Cure) 7 Days.

Packaging and Safety

HARDSEAL is available in 5, 10, 20 and 200 litre drums.

Refer to the Material Safety Data Sheet before handling or use.

Directions For Surface Preparation And Application

Surface Preparation

All surfaces to be sealed or coated must be free from dust, dirt, oil, grease and other contaminants.

Clean all surfaces with degreasant and flush with copious quantities of clean water, scrubbing to remove all contaminants while washing down the area. Repeat this application until all residues of contaminant are removed.

Acid etch bare concrete if surface is not profiled, using hydrochloric acid diluted with 10 parts water to 1 part acid. Broom on to surface and leave to react for approximately 10 minutes. Do not allow to dry out, hosing off with copious quantities of fresh water.

Allow surface to thoroughly dry prior to sealer application.


Stir thoroughly before and during application to ensure uniformity, making sure that any suspended pigment (if coloured) is completely re-incorporated.

The First coat must be thinned with 10-20% Xylene to assist penetration and adhesion.

Apply coating evenly with broom, roller or spray gun. Uneven application may result in blistering.

Allow recommended drying time and apply evenly one full second coat without dilution.


HARDSEAL can be removed from tools and equipment with Xylene.


  2. Provide adequate ventilation during application and drying.
  3. Store away from naked flames and sparks.
  4. Ensure you are familiar with MSDS prior to usage.


Click here for the Material Safety Data Sheet for this product