Repairing Concrete Swimming Pools in New Zealand: Expert Solutions for Lasting Results

Concrete swimming pools are a popular feature across New Zealand whether it be a commercial community pool, a school pool or a family pool, providing a refreshing escape during hot summer months.

Even with regular maintenance, failures of the concrete structure can occur over time. These pools can develop cracks, leaks, or other damage that requires professional repair.

Concrete Solutions offers specialist services across New Zealand to fix and refurbish concrete pools, ensuring they remain safe and functional for years to come. Our local experts use advanced techniques and materials to address common issues such as structural cracks, sinking and surface deterioration.

Timely repairs are crucial for preserving the integrity and value of a concrete swimming pool. By addressing problems early, pool owners can avoid more extensive and costly repairs down the track. Regular inspections and preventative measures can help keep New Zealand's concrete pools in top condition for families to enjoy.

Understanding concrete pool damage

Concrete swimming pools face various challenges that can lead to damage over time. Identifying the causes and recognising early signs of wear is crucial for maintaining a safe and enjoyable pool environment.

Cracked swimming pools‍

Anything that’s made of concrete can crack under certain weather conditions, and your pool is no different. The only problem is, this can cause more of an issue, as water can leak through and cause significant damage to the structure. To fix this, Concrete Solutions can inject flexible polyurethane resins to seal the cracks and prevent further degradation and leaking.

Sinking swimming pools‍

Ground and soil conditions are constantly changing between seasons, and the ground beneath your pool is no different. This may result in voids under the structure which can lead to sinking of the concrete structure. This may result in cracked concrete and pool leaks. To fix this our team can fill any voids within the soil and seal any of the resulting cracks.

Structural steel corrosion

Concrete spalling occurs where the steel within the concrete structure has been exposed to moisture and oxygen. This corrodes the steel which leads to it expanding and effectively popping the concrete off from around the steel. Concrete Solutions specialise in a number of spall repair techniques, from hand packing small repairs to spraying larger repair areas.

Surface damage‍

Plaster and concrete is porous, and so is susceptible to staining. Many pools will have failing coatings, which is to be expected with general wear and tear. 

Craze Cracking is a light surface crack due to shrinkage. Although this doesn’t leak water, excessive crazing can cause further problems (such as staining, algae, and calcium nodules) and may need to be replastered.

Causes of damage

Soil movement is a significant factor in concrete pool damage. As the ground shifts, it can create pressure on pool walls, resulting in cracks or structural instability. Freeze-thaw cycles in colder regions of New Zealand can cause concrete to expand and contract, leading to surface deterioration.

Chemical imbalances in pool water can erode the concrete surface. Improper pH levels or excessive use of certain chemicals may accelerate this process. Inadequate waterproofing during construction or deterioration of sealants over time can allow water to penetrate the concrete, causing internal damage.

Poor construction techniques or substandard materials can result in premature pool failure. This may include insufficient reinforcement or improper curing of the concrete during installation.

Signs of wear and tear

Visual inspection is key to identifying concrete pool damage. Cracks in the pool shell or deck are common indicators of structural issues. These may appear as hairline fractures or more substantial gaps, depending on the severity of the problem.

Discolouration or rough patches on the pool surface can signal chemical erosion or general wear. Peeling, flaking, or chalky residue on the pool finish indicates degradation of the surface material.

Water loss beyond normal evaporation may suggest leaks in the pool structure. This can be confirmed by performing a bucket test to compare water loss rates.

Hiring professionals

Engaging skilled contractors is crucial for successful concrete pool repairs in New Zealand. Professional expertise ensures quality workmanship and compliance with local regulations.

Concrete Solutions’ experience in pool repairs using our specialist concrete repair, coating and injection systems will increase the life span of your swimming pool. With a team trained to work in confined spaces, even the hardest to reach repairs around your pool can be completed to our usual high standard.