Rotafix RM20 Lightweight Concrete Repair Mortar

Rotafix RM20 LW is a lightweight concrete repair mortar which is suitable for repairs to reinforced concrete structures. 

RM20 Light Weight Concrete Repair Mortar

Rotafix RM20 repair mortar is suitable for vertical and overhead applications as the consistency of the mixed product gives very little slump even when applied in thick build layers making the repairs quicker and easier to complete.

Prior to the application of the mortar, the surfaces should be coated with Rotafix P12 primer to improve adhesion and to prevent corrosion to the metal reinforcing bars.

A maximum of 50mm can be applied per application. Rotafix RM20 LW repair mortar meets the test requirements of the Water Research Council standard BS6920 for the storage of potable water, so concrete storage tanks for water or marine applications are safe to use this product.

Rotafix RM20  has a high chemical resistance to cleaning products making it ideal for repairs to concrete floors in food preparation or farming applications.

We provide a colour matching service, we will require a sample of the existing substrate to match to, you will be given samples to choose from and then we can manufacture a specific product to meet your requirements in any volume.

Additional Information:

  • Compressive strength: 25N/mm2
  • Tensile strength 15 N/mm².
  • Flexural strength 17 N/mm² .
  • Specific gravity 1.27 at +20ºC.
  • Standard colours beige/grey (colour matching service available for stonework).
  • Chemically resistant – unaffected by a wide range of industrial and domestic chemicals.

Supplied with:


Available Sizes:

  • 2.5L (Product code: 3370)
  • 2.5L – Fast Set (Product code: 3377)

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