Epoxy-resin concrete bonding agent for bonding new cementitious materials to existing cementitious surfaces, available in standard and slow-setting grades. For use on horizontal surfaces and on vertical surfaces where mortar or concrete can be supported by formwork.

Ideal for extensions and repairs to concrete in factories, loading bays, trucking aisles, bridges, roads, bonded or granolithic floor toppings.


  • Can be applied to dry or damp surfaces.
  • High mechanical strength.
  • Good positive adhesion.
  • Can be applied where a substrate/ repair barrier is required.

General information

Uniclass 2015

Pr_20_31_02_28 Epoxy resin-based bonding compoundsPrimary


C42/310 Repair mortar

Specification data - Epoxy resin-based bonding compounds

Product Reference

Nitobond EP Standard

Nitobond EP Slow set

Standard product features


Based on solvent-free epoxy resins containing pigments and fine fillers. It is supplied as a two-part material in pre-weighed quantities ready for on- site mixing and use. Coloured components, white base and green hardener, provide visual evidence that adequate mixing is achieved.


Results for Nitrobond EP Standard, 20°C at seven days:

  • Compressive strength (BS 6319-2): 50 N/mm².
  • Flexural strength (BS 6319-3): 35 N/mm².
  • Tensile strength (BS 6319-7): 20 N/mm².
  • Slant shear bond (BS 6319-4): 25 N/mm².
  • Adhesive strength to concrete: In general the bond will always exceed the tensile strength of the concrete.

Product Options

Product reference:

– Nitobond EP Standard:

  • Pot life (20°C): 35–45 minutes.
  • Initial hardness: 24 hours.
  • Full cure: 7 days.
  • Maximum overlay time (20°C): 90 minutes.
  • Minimum application temperature: 5°C.

– Nitobond EP Slow set:

  • Pot life (20°C): 5–6 hours.
  • Initial hardness: 48 hours.
  • Full cure: 7 days.
  • Maximum overlay time (20°C): 24 hours.
  • Minimum application temperature: 5°C.