Clear Sealing New Concrete Floor with Paint Roller

M-PRIME 104 - Damp Tolerant Concrete Primer

£196.50 Excl VAT

M-PRIME 104 – Damp Tolerant Concrete Primer

£196.50 Excl VAT

The product is a solvent-free clear epoxy primer, which provides outstanding penetration into concrete and other cementitious substrates and helps to consolidate weak surfaces.



M-PRIME 104 - Damp Tolerant Concrete Primer

M-PRIME 104 – DAMP TOLERANT CONCRETE PRIMER Is a solvent-free clear epoxy primer suitable for the application to concrete surfaces with a moisture content up to 25%.

MPR 104 – penetrates deep in to the concrete and has excellent bond strength. The primer is applied as a single coat in most instances, but very porous concrete may require a second coat.

Typically, the product is used to consolidate concrete before the application of other coating materials usually epoxy, polyurethane or acrylic floor coatings.

But is also used as a bonding agent for epoxy concrete repair mortars or as a clear sealer for worn concrete to suppress any dust.

Typical Uses

  • Concrete Floors
  • Concrete Tanks & Reservoirs
  • Chemical & Fuel Bunds
  • Concrete Sumps Channel & Drains

Please contact us to discuss your project before purchasing this material to confirm suitability.

Application Guide

  • Remove any surface contamination and lightly abrasive blast or scarify using mechanical hand tools taking care not to expose the aggregate.
  • Allow new concrete to cure for a minimum 21 days and remove any surface laitance before coating.

Prior to mixing please ensure the following:

  • Ensure the moisture content of the concrete is below 25%.
  • Suitable for applications where the surface temperature is 5°C or above
  • Mix the base component with the activator component in full units as supplied, ideally use slow speed paddle mixer.

  • When mixing both materials, it is essential to have a uniform streak free fluid.

  • Once mixed, the material should be used within 30-40 minutes at 20°C.

  • Apply the mixed material directly to the prepared surface using a brush, roller or standard airless spray.
  • Normally a single coat is enough but for very porous surface an additional coat may be required.
Clear pale yellow liquid
Amber liquid
Pale amber liquid
Mixing RatioBy Weight
By Volume
Solids Content100%
Sag ResistanceNil at150 microns
Usable Life10°C

90 minutes
45 minutes
22.5 minutes

Coverage At 150 microns the theoretical coverage rate is

6.66m² per ltr
Cure Times at 20°C Minimum overcoating time
Maximum overcoating time
8 hours
36 hours
Storage LifeUnopened and stored in dry conditions (15-30°C)5 years
Pull off adhesion Elcometer pull off adhesion testerDry 525psi
37kg/cm² (cohesive in substrate)
Wet 475psi
33.4 kg/cm² (cohesive in substrate)
Compressive StrengthTested to ASTM D 695629kg/cm² (8945psi)
Flexural StrengthTested to ASTM D790371kg/cm² (5275psi)
HardnessShore D to ASTM D224084
Tensile ShearTested to ASTM D1002

On abrasive blasted mild steel with 75 micron profile – 201 kg/cm² (2860 psi)

On rusted steel – 167 kg/cm² (2375 psi)
Heat ResistanceSuitable for use in immersed conditions at temperatures up to:
Suitable for use in dry conditions at temperatures up to dependant on load:

Additional information

Weight 4.86 kg


Unit Size


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