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Resin Injection

Cracks in concrete structures can often be repaired using low viscosity epoxy resins, injected under controlled pressure. This method provides a mechanical bond and restores structural integrity.

Cracks are caused by movement, or lack of cover in concrete, stonework and brickwork. The exact technique of dealing with each repair will vary according to the particular features of the job and the structural problem to overcome.

RESIN FOR FLOOR SCREEDS AND TOPPINGS Under particular circumstances, many other methods of injection or application may be appropriate. For bonding hollow floor screeds and toppings the resin may be injected through a series of 6 mm holes drilled through the screed or topping, or application may be made by gravity feed through these holes. A 'ponding' method is often convenient, using a putty or All Purpose mastic to form a ‘reservoir’. Grades used by Cemplas are either a very low viscosity resin for the finest of hairline cracks. The cure rate of this grade is retarded to permit time for injection into narrow cracks.

RESIN INJECTION LIQUID – PENETRATING A low viscosity but thixotropic liquid for cracks from 500 micron to 4mm. The thixotropic nature of this resin ensures that the injected resin will not drain from the injection point / area of the crack before it has initially cured, but it is sufficiently low in viscosity to be injected into these quite narrow cracks.

THIXOTROPIC RESIN INJECTION LIQUID Resin Injection systems have been specifically developed to make structural repairs that will restore (and under many circumstances improve) the concrete, brickwork or stonework to its original strength and condition.

It can be especially useful when adding in extra reinforcement to concrete repairs and pins for ornate stone restoration.

THIXOTROPIC RESIN INJECTION GROUT A heavier bodied resin for gaps and cracks wider than approx 4 mm and with the thixotropic benefits of above. Resin Injection can also eliminate further damage that is likely to be caused by the passage or leakage of water and will effectively repair concrete, stonework, and brickwork without leaving unsightly surface marks and ensure a more rapid, and economical repair.


With over 30 years experience we are a leading structural repair consulting contractor for local authorities, housing associations, construction industry professionals, commercial organisations and home owners.

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