Most Florida swimming pools are constructed of concrete (gunite or shotcrete) rather than fiberglass due to several key factors:

 Durability & Longevity

• Concrete is extremely durable and can last 30+ years with proper maintenance.
• Fiberglass pools, while resistant to algae, can develop gel coat cracks, blisters, or osmotic issues over time, especially in Florida’s harsh sun and humidity.

 Customization & Design Flexibility

• Concrete pools can be built in any shape, size, or depth, accommodating unique backyard layouts.
• Fiberglass pools come in pre-made shells, limiting design options (especially for larger or freeform pools).

 Ground Conditions & Soil Stability

• Florida’s sandy, shifting soil and high-water table can cause ground movement.
• Fiberglass shells are more prone to shifting or popping if not properly installed, whereas concrete pools (when engineered correctly) handle soil movement better.

 Resale Value & Buyer Preference

• Homebuyers in Florida often prefer custom concrete pools, which can increase property value more than a standard fiberglass pool.
• Fiberglass pools may be seen as a “budget” option in high-end markets.

 Climate & Heat Resistance

• Florida’s intense UV rays and heat can cause fiberglass to fade, warp, or degrade over time.
• Concrete, while requiring more maintenance, stands up better to extreme weather.

 Maintenance & Repairs

• Fiberglass pools have lower maintenance (smooth surface resists algae) but limited repair options if damaged.
• Concrete pools can be replastered, retiled, or refinished multiple times, extending their lifespan.

 Exceptions Where Fiberglass Wins:

• Faster installation (weeks vs. months for concrete).
• Lower initial cost (but may not last as long in Florida’s climate).
• Better for small, simple pool designs.

 Conclusion:

While fiberglass pools are popular in some regions, Florida’s soil, climate, and demand for customization make concrete the dominant choice for long-term performance and design freedom. However, fiberglass can still be a good option for budget-conscious homeowners with straightforward pool needs.