How Does Water Damage Affect a Swimming Pool Structure?

When the ground around a pool becomes oversaturated, it creates hydrostatic pressure against the pool's shell. This pressure is a constant force pushing inward and upward. If the pressure becomes too great, it can cause the concrete or fiberglass shell to crack, bulge, or even float out of the ground. This risk increases if your pool is emptied for maintenance during wet conditions.

A pool's design accounts for the counter-pressure of the water inside it. When that water is absent, the external pressure from the wet soil has nothing to resist it. This imbalance is a primary cause of serious structural failure. You should never leave a pool completely empty for an extended period, especially after heavy rain or during the spring thaw.

Concrete pool decks and shells are porous. When water seeps in and freezes, it expands, creating internal pressure. This freeze-thaw cycle causes the surface to flake and pop off in a process called spalling. Over time, these small cracks and pits deepen, exposing the reinforcing steel rebar to moisture and leading to rust, which further cracks the concrete from within.

Structural cracks in the pool shell itself are more serious than cosmetic deck cracks. They often appear as thin, spider-web lines or larger, jagged fractures. These cracks allow water to constantly seep out, undermining the soil support, or let groundwater seep in, altering your pool's chemistry. A professional assessment is needed to determine if a crack is superficial or a sign of major failure.

Determining the full extent of water damage to a pool structure requires specialized knowledge. An assessment can identify cracks, leaks, and soil instability that are not obvious. Tools like moisture meters and cameras can help see behind walls and underground, creating a complete picture of the damage before any repair plan is made.

Repairs can range from patching cracks and re-leveling decking to major excavation and structural rebuilding. For significant issues, a structural engineer may need to be consulted. The process often involves water damage cleanup, precise documentation for insurance, and specialized repair to restore safety and function. Policies vary, and your insurer decides what is covered.

• Inspection for hidden cracks and soil saturation.
• Documentation of all damage for insurance purposes.
• Stabilization of the surrounding soil and structure.
• Repair of plumbing leaks and electrical hazards.
• Rebuilding of compromised decks and coping.
• Final assessment to ensure structural integrity is restored.