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Radcon Formula #7® is a biochemically modified silicate solution that provides long-term waterproofing and durability benefits to concrete. It penetrates into concrete and reacts with free calcium and water to form a calcium silicate gel complex in cracks, pores and capillaries. This gel creates a sub-surface barrier against the ingress of water and contaminants such as chloride ions.


Radcon Formula #7® will seal existing leaking cracks to 2.00mm. In the matrix the product remains reactive when in contact with water to provide autogenous healing properties to future hairline cracks.

  • Permanently seals cracks up to 2.00 mm (Non Structural)

  • Reseals future hairline cracking (Not Exceeding 1 mm)

  • Reduction of chloride diffusion coefficient by 89% to 3.5 (10-12 m2/s.

  • Water permeability reduced by 70%/to 5.0 (10-12 m/s) at 10 Kg/cm2.

  • Increases surface hardness from 6 to 8 on Mohs scale

  • Reduces scaling in freeze-thaw environments by 89% at 50 cycles.

  • Allows 84.1% moisture vapor permeability.

  • Suitable for tank applications (positive hydrostatic pressure) -
    tested to 400 

  • Non-toxic - Certified suitability for potable water.

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