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Fiberglass Pool: Will it Crack?

Water in an inground pool

Assessing the Risk of Pool Crack in Fiberglass Pools

Fiberglass pools have gained immense popularity in recent years due to their durability, low maintenance, and aesthetic appeal. However, like any other pool material, there are concerns about whether fiberglass pools can crack, or develop coat problems.

In this article, we will explore if your pool can break and provide you with a comprehensive understanding of fiberglass pool durability.

Do Fiberglass Pools Crack?

To begin with, it is important to note that fiberglass pools are known for their strength and resilience. They are constructed using multiple layers of fiberglass reinforced with polyester resin, making them highly resistant to cracking.

Unlike a swimming pool made of concrete, which is prone to break due to shifting soil or ground movement, fiberglass pools are less likely to experience pool crack since they have a flexible structure that can withstand such forces.

One of the main reasons why fiberglass pools are less likely to crack is their ability to flex. It is very rare to see a fissure or spider crack on this type of pool.

The fiberglass material has a certain degree of elasticity, allowing it to expand and contract with temperature changes and ground movement. This flexibility helps to distribute stress evenly across the pool’s surface, reducing the risk of hairline cracks.

Moreover, fiberglass pools are manufactured in a controlled environment, ensuring consistent quality and structural integrity, which prevents pools from cracking.

The manufacturing process involves using molds to create the swimming pool’s shape, resulting in a smooth and seamless finish. This eliminates the weak points and potential areas of vulnerability that are often found in concrete pools, reducing the likelihood of cracks.

What Can Cause A Fiberglass Pool To Break?

However, it is essential to acknowledge that no pool material is entirely immune to crack. While fiberglass pools are highly resistant, certain factors can increase the risk of cracks. For instance, a fiberglass pool can crack if:

  • The pool is not installed correctly or the ground beneath it is not properly prepared, it can lead to uneven pressure distribution and potential cracking (such as spider cracks).
  • Extreme temperature fluctuations or improper maintenance can also contribute to the formation of cracks.

How to Prevent Pool Complications?

To mitigate the risk of cracks in your swimming pool, it is crucial to ensure proper installation and regular maintenance. Hiring a professional pool installer who has experience with fiberglass pools is essential to ensure that the pool is correctly placed and supported.

Additionally, following the manufacturer’s guidelines for maintenance, such as maintaining proper water chemistry and avoiding excessive water level fluctuations, can help prolong the lifespan of the pool and minimize the risk of fissures. Regular patch maintenance can further secure the pool’s surface integrity.

Summary Inground Pool Breaking

In conclusion, fiberglass pools are highly durable and resistant to cracking. Their flexible structure and controlled manufacturing process make them less prone to getting cracked compared to other pool materials. However, it is important to remember that no pool material is entirely crack-proof. Proper installation, regular maintenance, and adherence to manufacturer guidelines are crucial to minimize the risk of fissure and ensure the longevity of your fiberglass inground pool.


The author of this post is Mathieu Robert, certified from La Cité Collégiale in construction and building techniques.


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