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Renderoc HB25 20kg
Renderoc HB25 20kg
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Fosroc Renderoc HB25

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Renderoc HB25 is a high build, shrinkage compensated concrete repair mortar for patching up to 1m2 sections in concrete up to 30 MPa. It can be applied to vertical concrete patches up to 80mm deep. Suitable for use with Galvashield anode protection systems.

Typical Applications

  • Vertical & overhead patch repairs
  • Localised trowel or wet spray application, up to 1m2 repair area, trowel build depth between 10-40mm required, and required strength


  • Maximum compatibility with concrete with a compressive strength in the range 15 - 30 MPa
  • Polymer-modification provides extremely low permeability to water, carbon dioxide and chlorides
  • Exceptional system of shrinkage compensation provides long-term dimensional stability
  • Lightweight formulation enables extra high-build - fewer cold joints
  • Frequently obviates the need for formwork
  • Can be applied quickly and efficiently by wet spraying
  • One component, pre-bagged to overcome site-batched variations
  • Contains no chloride admixtures
  • Suitable for internal and external applications

Key Properties

  • 28 day Strength : 23MPa
  • Application : Trowel, Wet Spray
  • Compatible concrete strength : 15 to 30MPa
  • Suitable for use with Galvashield anodes? : Yes
  • Trowel Build / Depth : 10mm to 80mm vertical