Before we talk about which pool we prefer, let’s look at how these pools are actually built.
A fiberglass pool is manufactured as a complete shell in a controlled factory environment. Instead of building the pool structure piece by piece in your backyard, the finished shell is delivered to your property and installed into a properly prepared excavation.
The result is a one-piece pool shell with a smooth, non-porous gelcoat surface.
Fiberglass gives you: Fast installation, A smooth, non-porous surface, Low surface maintenance, No vinyl liner to replace, No routine concrete replastering, A degree of shell flexibility, A wide range of sizes, shapes, depths, colors, steps, tanning ledges, and features.
And because we install Latham fiberglass pools, you’re not limited to one or two basic designs. Latham offers a large collection of fiberglass pool shapes and sizes, from compact plunge pools to large family pools.
This is where the differences start to become easier to see.
| Feature | Fiberglass | Gunite / Concrete | Vinyl Liner |
|---|---|---|---|
| Installation | About 2 days for shell installation | Typically 3–6 months | Generally faster than concrete |
| Surface | Smooth, non-porous gelcoat | Plaster, pebble, tile, or other finish | Smooth vinyl liner |
| Algae resistance | Excellent surface resistance | More prone to harboring algae | Good when properly maintained |
| Replastering | No routine replastering | Typically every 7–10 years, depending on finish and conditions | N/A |
| Liner replacement | No liner | N/A | Typically every 5–9 years, depending on conditions |
| Surface comfort | Very smooth | Depends on finish; can be rougher | Smooth |
| Design flexibility | High, within available models | Highest | High |
| Ground movement | Flexible shell | Rigid structure | Flexible liner/wall system |
| Maintenance | Low | Higher | Moderate |
| Best fit | Low-maintenance ownership + fast installation | Maximum customization | Lower initial investment |
These are general comparisons, not guarantees. Actual installation timelines, maintenance intervals, and lifespan vary based on the specific pool, site conditions, materials, installation, water chemistry, climate, and maintenance.
And that’s the important part: There isn’t one pool that's automatically right for every homeowner.
Click a topic to view details regarding construction, surfaces, and long-term ownership.
One of the biggest advantages of fiberglass is how quickly the pool shell can be installed. Once the excavation and site preparation are ready, the fiberglass shell itself can be set and installed in approximately two days.
A Gunite/concrete pool can take roughly 3–6 months from excavation through completion. Your pool shell is already built before it arrives at your house. At Utah Pool Guy, our current goal is to get homeowners swimming in as little as three weeks.
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