Pool Cracks Explained: Cosmetic vs. Structural
The short answer
Pool cracks fall into two categories: cosmetic crazing (shallow surface lines that usually don't leak) and structural cracks (deeper cracks through the shell that can leak and spread). Structural cracks — common in Texas due to expansive clay soils — require stapling and bonding, not just a surface patch.
Cosmetic crazing
Fine, shallow surface lines (crazing or check cracking) are common in plaster and usually don't leak. They're a finish-quality issue, not a structural one.
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Structural cracks
Deeper cracks that pass through the shell can leak and tend to grow as the ground moves. These need a structural repair, not just resurfacing over the top.
Why Texas pools crack
Expansive clay soils across Central and West Texas swell and shrink with moisture and heat, moving the ground under the pool and stressing the shell.
How structural cracks are repaired
A lasting repair locks the shell together:
- Staples are set across the crack to rejoin the structure.
- The crack is bonded and sealed to stop leakage.
- Resurfacing blends the repair into a uniform finish.