Why Does My Pool Get Cracks?

Pool cracks can appear gradually or suddenly show up without any warning. In some cases, they remain minor surface issues, while in others, they may point to changing conditions around the pool structure or underlying stress developing over time.

Awareness about what can contribute to cracking helps pool owners immediately recognize when a pool may need closer evaluation.

Soil Settlement

One of the most common causes of pool cracks is soil movement beneath the pool. As soil settles or shifts, pressure can build against the pool shell.

Pools installed on poorly compacted or unstable ground can be more vulnerable to structural stress and cracking.

Temperature Changes

Repeated expansion and contraction from changing temperatures can place stress on pool materials.

In hotter conditions, pool surfaces and surrounding materials expand, while during colder periods, they contract. Later on, this movement can contribute to surface cracking or structural stress, especially in older pools.

Construction or Installation Issues

Improper construction can increase the chances of cracks developing earlier than expected.

Weak structural support, inadequate reinforcement, improper curing, or poor installation practices may affect how well the pool handles water pressure and ground movement over time.

Water Leaks and Soil Erosion

Pool leaks can gradually weaken the surrounding soil. As voids develop beneath or around the pool structure, sections of the shell may shift unevenly, increasing the risk of cracks.

Detecting and repairing leaks early can prevent additional structural movement.

Natural Ground Movement

Ground movement from shifting soil conditions or seismic activity can also affect pool structures.

While these conditions cannot always be prevented, regular inspections and proper structural support can help reduce the risk of major damage.

Addressing Pool Cracks Before They Get Worse

Pool cracks can develop from several contributing factors, including shifting ground conditions, temperature-related stress, construction issues, leaks, and structural movement over time.

While some cracks remain surface-level, others may continue spreading if the underlying issue is not addressed immediately.

Evaluating the surrounding conditions, structural stability, and possible water loss early can help reduce the risk of larger repairs later.

Cracks that continue growing or returning may require more than a surface patch solution. Poolie helps identify the underlying cause, assess structural conditions, and recommend repair solutions based on the pool’s long-term stability. Fill out the form below to connect with the Poolie team and schedule a professional pool evaluation.