How To Tell If Pool Crack Is Structural

How To Tell If Pool Crack Is Structural

Swimming pools are a wonderful addition to any property, providing a great source of entertainment and relaxation. However, they can also be a significant investment, and when cracks appear, it can be concerning for any pool owner. Cracks can happen due to various reasons such as age, wear and tear, weather, and structural issues. It is essential to identify whether the crack in your pool is structural or non-structural as it will determine the severity of the problem and the type of repair required. In this article, we will explore how to tell if a pool crack is structural.

What is a Structural Crack?

Before we dive into identifying structural cracks, it is essential to understand what a structural crack is. A structural crack is one that occurs in the foundation or the supporting structure of the pool. It is caused by several factors such as soil movement, ground settling, and hydrostatic pressure. Structural cracks can be dangerous and pose a significant threat to the overall stability of the pool.

Identifying Structural Cracks

There are several ways to identify if a crack in your pool is structural or non-structural. Here are some of the most common signs of a structural crack:

  1. Location: The location of the crack is a significant indicator of whether it is structural or non-structural. Structural cracks are generally located in the pool’s foundation or the supporting structure, while non-structural cracks occur in the pool’s surface or tile.
  2. Size: The size of the crack can also help determine whether it is structural or non-structural. Structural cracks are usually more extensive and longer than non-structural cracks.
  3. Shape: The shape of the crack can also provide an indication of its severity. Structural cracks tend to be straight or zigzag, while non-structural cracks are more irregular.
  4. Water Loss: If you notice a sudden and significant drop in water level, it could be due to a structural crack that is causing water to leak out of the pool.
  5. Structural Damage: If you notice any other structural damage such as bulging walls or uneven pool deck, it could indicate a structural issue that has caused the crack.

Repairing Structural Cracks

If you suspect that your pool has a structural crack, it is essential to seek professional help immediately. Structural cracks require specialized repairs that are more complicated and expensive than non-structural cracks. A professional pool contractor will conduct an assessment of the pool to determine the extent of the damage and the best approach for repair.

There are several methods for repairing structural cracks in a pool, including:

  1. Epoxy Injection: Epoxy injection is a popular method for repairing structural cracks. It involves injecting an epoxy resin into the crack, which fills the gap and binds the crack together.
  2. Shotcrete: Shotcrete involves spraying a concrete mixture onto the crack to fill it in and reinforce the pool’s structure.
  3. Grout Injection: Grout injection involves injecting cementitious grout into the crack, which expands and fills the void, creating a solid structure.

Preventing Structural Cracks

While it is impossible to prevent all pool cracks, there are steps you can take to minimize the risk of structural cracks. Here are some tips:

  1. Proper Maintenance: Proper pool maintenance is crucial to preventing structural cracks. Regular cleaning, chemical balancing, and equipment checks can help identify potential problems before they become severe.
  2. Soil Testing: If you live in an area with expansive soils or unstable ground, it is essential to have your soil tested before building a pool. This can help identify potential issues and allow for proper foundation design.
  3. Hydrostatic Relief Valve: Installing a hydrostatic relief valve can help prevent hydrostatic pressure buildup, which is a common cause of structural cracks.
  4. Professional Installation: Choosing a professional pool contractor for pool installation can ensure that the pool is built to code, and the foundation is designed to withstand the weight and pressure of the water. Professional installation can also help prevent errors and issues that can lead to structural cracks.
  5. Proper Drainage: Proper drainage around the pool can prevent water buildup, which can cause hydrostatic pressure to build up and lead to structural cracks.


In conclusion, identifying whether a pool crack is structural or non-structural is essential for pool owners. Structural cracks can pose a significant threat to the pool’s stability and require specialized repairs. It is crucial to seek professional help if you suspect a structural crack in your pool. By taking preventative measures such as proper maintenance, soil testing, and professional installation, you can minimize the risk of structural cracks and prolong the life of your pool. Remember to address any cracks immediately and take the necessary steps to ensure the safety and longevity of your pool.

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