SpECinject EP


SpECinject EP is a two part, solvent-free, low
viscosity epoxy resin system when mixed in the
proportions supplied forms a strong permanent
bond and seal in cracks in concrete and masonry.
SpECinject EP is designed to be injected into
static cracks using suitable resin injection
equipment provided by specialist installers.

Technical Details

· For injecting into static cracks in concrete or masonry, to form a permanent bond or seal.
· Low viscosity allows penetration into the finest cracks
· Formulated for hot climates
· Suitable for structural repairs
· Excellent bond to concrete, brick and masonry
· Minimum creep under sustained load
· Resistant to wide range of chemicals
· Non-shrink, adheres with no loss of bond

Typical results at 25 ± 2°C Compressive Strength (BS6319) 

85 N/mm² 
Tensile Strength (BS6319) 

25 N/mm² 

Flexural Strength (BS6319) 

35 N/mm² 
Gel time (200g max.) 

>60 mins 

Specific gravity 


1.0 – 1.20 poise 

Surface preparation
Clean the surface and remove any dust, unsound or contaminated material, plaster, oil, paint, grease, corrosion deposits or algae.

Oil and grease deposits should be removed by steam cleaning, detergent scrubbing or the use of a proprietary degreaser.

Blow the cracks and treated surface with oil free air to ensure complete removal of all dust and loose particles. Ensure that the surfaces are blown dry.

In the presence of running water, please refer to the SpECinject PU injection resin system.

Fixing Injection Packers
The injection packers shall be inserted into pre-drilled holes at intervals along the length of each crack. The distance between each packer shall be close enough to ensure that the resin will penetrate along the crack to the next point of injection.

The surface of the cracks between the packers shall be sealed with a thick band of SpECcoat BC, typically 50mm wide x 2mm thick. Cracks that go all the way through a wall or slab must have packers located on both sides with those at the back placed at midway points between those at the front.

SpECcoat BC shall be allowed to cure for 8 hours at 20°C but at lower temperatures, the curing time will be extended and the applicator should ensure that the surface sealant has adequately cured prior to continuing. One end of the injection hose shall be attached to the lowest packer on vertical cracks or to either end of the horizontal cracks.

If alternative methods are proposed then please contact SpEC Technical Department for their comments.

Thoroughly mix the entire hardener and base resin contents until the liquid becomes clear.

SpECinject EP should be used with standard injection equipment having closed containers. The injection pressure should be at least 0.4 N/mm² (4 bar).

Only mix sufficient resin that can be used within the pot life of the material.

Following completion of the injection works, the injection system shall be allowed to cure for 24 hours and shall be left undisturbed for this time.

When using two-component injection machine, mixing takes place in the injection machine.
SpECinject EP is supplied in 1.0 litre pack. Bulk supply is also available on request.

SpECcoat BC is supplied in 3 and 5 kg packs which yield around 1.7 and 3.0 litres respectively of mixed product.
Contact us for more info.

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