Can be used as a render as well as for all types of patch repair. Renderoc GP is designed for vertical, overhead or horizontal use. It can be applied up to 20 mm thickness in sections overhead and 30 mm thickness in vertical sections. Up to 100 mm thickness can be achieved in small pockets, or by the use of formwork. In horizontal locations the material can be applied up to 100 mm thickness. Thicker sections can be built up in layers.


  • Easy to use – no independent primer or curing membrane necessary.
  • Excellent bond to concrete substrate.
  • Contains no chloride admixtures.

General information

Uniclass 2015

Pr_20_31_53_15 Concrete repair mortarsPrimary


C42/335 Proprietary concrete for small area repairs

Specification data - Concrete repair mortars

Product Reference

Renderoc GP


Polymer modified cementitious mortar

Standard product features

CE marking:

  • Declaration of performance: UK9-13.
  • Standard: BS EN 1504-3.
  • Compressive strength: Class R3 (>25 MPa).
  • Chloride ion content: ≤0.05%.
  • Adhesive strength by pull-off test: ≥1.5 MPa.
  • Thermal compatibility (freeze-thaw cycling with immersion): ≥1.5 MPa.
  • Carbonation resistance: Pass.
  • Elastic modulus in compression: 15.1 GPa.
  • Reaction to fire: Class A1.
  • Dangerous substances: Complies with 5.4.

Compressive strength (BS EN 12190:1999):

  • One day: 15 MPa.
  • 28 days: 30 MPa.

Setting time:

  • Initial set: 3.5 hours.
  • Final set: 4.0 hours.

Third party certifications
  • European Standards: EN 1504 - CE
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