Renderoc HB70 is a high-strength, high-build repair mortar for localised reinstatement of reinforced concrete above 45 MPa. It meets EN 1504-3 Class R4 and achieves a published 28-day compressive strength of 70 MPa, making it suitable for demanding structural repair environments where compatibility with higher-strength concrete is required.

Typical applications include vertical patch repairs to columns, walls, beams and other reinforced concrete elements by trowel or wet spray. Fosroc currently lists a vertical trowel build depth of 5–40 mm. The shrinkage-compensated mortar provides abrasion resistance and low permeability and may be suitable for use with Galvashield anodes and in potable-water applications, subject to the current approvals and technical documentation.

All unsound concrete and contamination should be removed before repair, and the remaining substrate must be sound with a suitable surface profile. Exposed reinforcement should be assessed and treated as specified. Mixing water, priming, build thickness, repair area, spray application and curing should follow the latest Fosroc Technical Data Sheet. Renderoc HB70 Plus is a separate current product with different published details, so the correct variant should be confirmed.

Safari Group supplies Renderoc concrete repair products from Canning Vale for structural maintenance and remediation across Perth and regional WA. Contact our team with the substrate strength, repair dimensions and application method to confirm whether Renderoc HB70 or HB70 Plus is the appropriate product and currently available.

For faster product selection, have the project specification, substrate details, required repair depth and application method, estimated quantity, site conditions and required completion time available.

FAQ’s

Question: What strength concrete is Renderoc HB70 designed to repair?
Answer: Fosroc positions Renderoc HB70 for localised repairs to reinforced concrete above 45 MPa. The repair mortar should be selected to provide appropriate compatibility with the existing substrate.

Question: What is the published strength of Renderoc HB70?
Answer: Fosroc publishes a 28-day compressive strength of 70 MPa for Renderoc HB70, subject to the stated mixing, curing and test conditions.

Question: Is Renderoc HB70 the same as Renderoc HB70 Plus?
Answer: No. They are separate current Fosroc products with different published application details. Confirm the specified or stocked variant before ordering.

Question: Where can I buy Renderoc HB70 in Perth?
Answer: Safari Group supplies Renderoc products from Canning Vale. Contact us to confirm current availability and the right high-strength repair mortar for your WA project.

‍ ‍> Click Here For Renderoc HB70 Technical Data Sheet <