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2. Preparation

The damaged area is prepared before repair. Depending on the condition, this may involve cleaning the crack, removing loose concrete, exposing sound material or preparing the surrounding surface.

3. Selecting the repair method

A suitable repair system is selected based on the findings. This may include surface crack repair, epoxy crack injection, PU injection, patching or another remedial concrete treatment.

4. Crack treatment

The selected repair material is applied using the appropriate technique. For injection repairs, specialist ports and equipment may be used to introduce the material into the crack.

5. Finishing

Once the repair has cured or set, the area can be finished to provide a suitable surface appearance and profile.

6. Final inspection

The repaired area is checked to ensure the repair has been completed appropriately and that any related concrete deterioration has also been addressed.

Simply filling the visible crack may not be sufficient if water continues to enter through the surrounding structure.

Why professional concrete crack repair matters

The appearance of a crack does not always reveal its cause.

Two cracks that look similar may require completely different repair methods. One may be caused by normal shrinkage, while another may be associated with movement, water ingress or concrete deterioration.

Professional assessment considers factors such as:

• Crack width and depth
• Crack location
• Crack direction and pattern
• Movement
• Moisture levels
• Concrete condition
• Reinforcement condition
• Possible settlement
• Previous repairs
• Exposure and environmental conditions

This information helps determine whether the crack requires sealing, injection, patching or a more extensive remedial solution.

Why repair concrete cracks early?

Leaving a crack untreated does not always result in further damage, but cracks can create opportunities for moisture and contaminants to enter the concrete.

Depending on the location and cause, ongoing cracking can contribute to:

• Water ingress
• Concrete deterioration
• Corrosion of reinforcement
• Spalling
• Damage to surface finishes
• Further cracking
• More extensive remedial work

Having a crack assessed early can help establish its cause and determine whether repair is necessary.

Concrete crack repair across Sydney and surrounding areas

United Trade provides concrete crack repair and remedial concrete services for properties throughout Sydney, Canberra / ACT, the Central Coast, Newcastle, Wollongong and the Blue Mountains.

We work across residential, commercial, strata and industrial environments, providing practical repair solutions based on the condition of the concrete and the requirements of the property.

Whether you are dealing with a recurring crack, water ingress, damaged concrete or deterioration around a structural element, our team can inspect the affected area and recommend an appropriate repair approach.