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For the emergency reinstatement of localised patches in concrete pavements, airport aprons, access ramps, roadways and many industrial situations.


  • Rapid strength gain – will accept traffic in two hours.
  • High strength.
  • Easy to use – no independent primer or curing membrane necessary.
  • Excellent bond to concrete substrate.
  • Contains no chloride admixtures.

Related literature

The following content references this product:

Standard product features

CE marking:

  • Declaration of performance: UK9-27.
  • Standard: BS EN 1504-3.
  • Compressive strength: Class R4 (> 45 MPa).
  • Chloride ion content: ≤0.05%.
  • Adhesive strength by pull-off test: ≥2.0 MPa.
  • Thermal compatibility (freeze-thaw cycling with immersion): ≥2.0 MPa.
  • Carbonation resistance: Pass.
  • Elastic modulus in compression: 29 GPa.
  • Skid resistance (units tested wet): Class III (>55).
  • Reaction to fire: Class A1.
  • Dangerous substances: Complies with 5.4.

Compressive strength (BS EN 12190:1999):

  • Two hours: 20 MPa.
  • One day: 50 MPa.
  • Seven days: 55 MPa.
  • 28 days: 65 MPa.

Traffic time:

  • Pedestrian: 10ºC, four hours; 20ºC, two hours.
  • Vehicular: 10ºC, four hours; 20ºC, two hours.

NBS Specification

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This product is associated with the following NBS Create clause:
45-55-50/345 Polymer-modified cementitious mortar

Product specification

An important note about specifying



Fosroc Ltd


+44 (0)1827 262222

Product reference

Patchroc GP


Polymer modified cementitious mortar

Manufacturer details

Drayton Manor Business Park,
Coleshill Road,
Staffordshire, B78 3XN
Tel +44 (0)1827 262222
Fax +44 (0)1827 262444
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