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What can damage a fiberglass pool?

Fiberglass pools have surged in popularity, revered for their durability and ease of maintenance. However, even the sturdiest structures are not immune to damage. This article aims to enlighten fibreglass pool owners about potential harm to their beloved backyard oasis and the best prevention practices.

Overview of Fiberglass Pools

Fibreglass pools are single-piece structures made from moulded fibreglass-reinforced plastic. This construction method makes them incredibly strong and flexible compared to traditional concrete or vinyl-lined pools. One of their key advantages is their non-porous surface, which inhibits algae growth and reduces the need for harsh chemicals.

Common Causes of Damage to Fiberglass Pools

Chemical Imbalance

A primary concern for fibreglass pool owners is the water’s chemical balance. Pools require a delicate balance of chemicals to maintain cleanliness and safety. An imbalance, such as too high or too low pH levels, can lead to the fibreglass surface becoming discoloured or developing a rough texture. Similarly, excessive chlorine can degrade the gel coat, leading to fading and brittleness.

Physical Damage

Despite their robust nature, fibreglass pools are not immune to physical damage. Impact from heavy objects, aggressive pool games, or improper use of maintenance equipment can cause cracks or structural damage. These damages compromise the pool’s integrity and pose safety risks.

Weather-Related Damage

Fiberglass pools can also suffer from extreme weather conditions. In areas with severe winters, freezing temperatures can cause the water to expand, potentially cracking the fibreglass. Similarly, excessive heat can cause the fibreglass to warp or buckle, especially if the pool is empty.

Preventative Measures and Maintenance

Routine Maintenance

Regular maintenance is vital in preventing damage. This includes keeping the pool clean, regularly checking for signs of wear or injury, and ensuring the surrounding area is safe and clear of debris.

Proper Chemical Balancing

Monitoring and balancing pool chemicals are critical. Pool owners should regularly test the water’s pH and chlorine levels, adjusting as needed. If unsure, consulting a professional for advice on chemical treatments is always recommended.

Protection Against Physical Damage

To minimize the risk of physical damage, pool owners should use pool covers when not in use. Additionally, setting rules about appropriate pool use and handling maintenance equipment carefully can go a long way in preventing accidental harm.

Repairing Damages in Fiberglass Pools

DIY repair kits are available for minor scratches or cracks. These often include fibreglass patches, gel coats, and sanding materials. However, seeking professional help is crucial for more significant damages. An experienced technician can assess the extent of the injury and perform safe and long-lasting repairs.

Long-term Care and Considerations

Long-term care is essential to extend the lifespan of a fibreglass pool. This includes regular professional inspections, especially if the pool is subject to harsh weather conditions or heavy use. Such inspections can identify potential issues before they escalate into major problems.


Fiberglass pools are a fantastic investment for any homeowner, combining beauty with practicality. However, they are not without their vulnerabilities. Understanding what can damage these pools and adhering to proper care and maintenance regimen is essential. When in doubt or faced with significant damages, always seek professional assistance to ensure your pool remains a safe and enjoyable part of your home for years.

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