Fiberglass pools: cost, pros and cons, and who makes them
By the Renology editorial team · Reviewed by Dror Gigi, Co-Founder · Facts checked
The short answer
A fiberglass pool is a one-piece shell made in a factory, trucked to your home and set by crane into a hole your builder digs. Manufacturer guides put a finished fiberglass pool at about $45,000 to $150,000 as of October 2026, with most mid-size pools and standard decking around $65,000 to $90,000. HomeAdvisor's national average for a basic install is lower, $33,270, because it counts less of the project. Most installs take a few weeks once permits are approved.
Fiberglass pools compared
Scored within this type on our published method. Prices checked October 2, 2026.
How we make money: Renology is paid by independent pool contractors in parts of California and Washington when we introduce them to homeowners. No pool maker pays us.
| Company | Score | Published price | Warranty | Best for |
|---|---|---|---|---|
| Thursday PoolsFortville, IN | 8.3 / 10 | $45,000–$150,000+Installed range, per company | 35-year structural warranty and 15-year surface warranty; the River-brand version is one-time transferable | The clearest public cost guide, by pool size |
| Latham PoolsLatham, NY | 8.3 / 10 | $50,000–$150,000Installed range, per company | Limited lifetime warranty against leaks from a structural failure, and against gelcoat blistering, extending only to the original buyer for as long as they own the pool | The widest choice of shapes and a dealer near most US homes |
| Leisure PoolsKnoxville, TN | 8.3 / 10 | $45,000–$100,000+Installed range, per company | Lifetime structural and lifetime structural osmosis warranty, plus 10 years on the gelcoat | A strong structural warranty on a large, well-built shell |
| River PoolsShells made in Fortville, IN; River Pools Virginia installs locally | 7.9 / 10 | $60,000–$200,000Installed range, per company | 35-year structural warranty and 15-year surface warranty against blistering, one-time transferable | Honest education on what a full project costs |
| Barrier Reef PoolsTimmonsville, SC | 7.9 / 10 | $45,000–$85,000Installed range, per company | Lifetime limited structural warranty, one-time transferable; 15 years on the gelcoat against blistering | A transferable lifetime structural warranty |
| San Juan PoolsLakeland, FL; plants in Eloy, AZ and Wolcott, IN | 7.8 / 10 | QuoteQuote only | 25-year structural and 10-year surface warranty | A western factory, with plants in Arizona and Florida |
| Imagine PoolsKnoxville, TN | 7.8 / 10 | QuoteQuote only | Lifetime structural and lifetime structural osmosis warranty | Lifetime structural coverage through POOLCORP dealers |
| Tallman PoolsJonesboro, GA | 7.5 / 10 | QuoteQuote only | 50-year warranty advertised; ask for the written terms | A long-established maker selling direct and through dealers |
How a fiberglass pool is installed
The shell is molded in a factory, then shipped on a truck. Your builder digs the hole and lays a gravel base, a crane lifts the shell into place, and the builder levels it, connects the plumbing and backfills around it while filling it with water. A concrete border or patio goes around the top.
River Pools puts the work at 3 to 5 weeks once permits are complete, and says permits take 1 to 10 weeks depending on the county. HomeAdvisor says four to six weeks from start to finish. Compare that with months for a site-built concrete pool.
What a fiberglass pool costs
Fiberglass prices look inconsistent because companies quote different things. A shell alone runs about $10,000 to $30,000 by size. A basic installation with a narrow border is what HomeAdvisor averages at $33,270, though Thursday Pools puts its basic installs at $55,000 to $80,000. Add a 400 to 800 sq ft patio and River Pools puts the project at $85,000 to $135,000; a full turnkey backyard runs $85,000 to $200,000.
By size, Thursday's September 2026 guide lists small pools under 26 ft at $45,000 to $75,000, medium pools at $75,000 to $110,000 and large pools over 35 ft at $110,000 to $150,000 and up. Freight matters too: most shells are made in the East and South, so a West Coast buyer should ask where the shell ships from.
Size and shipping limits
Because shells travel by road, widths top out around 16 ft and lengths around 40 ft. A crane needs a path to your yard, and power lines, trees and tight side yards can rule out a lift or raise its cost. Shapes are fixed by the molds, so choose from a catalog rather than designing your own.
Warranties are where makers differ most
Structural warranties run from 25 years to lifetime, and the fine print matters more than the headline. Latham's lifetime coverage lasts only while the original buyer owns the pool. San Juan's is 25 years and does not transfer. Thursday and River Pools offer 35 years that transfer once, and Barrier Reef a lifetime warranty that transfers once. See the warranty table on our main guide.
Fiberglass vs concrete vs vinyl
A site-built concrete (gunite) pool can be any shape, size and depth, but takes months to build and needs resurfacing over its life. A vinyl liner pool costs less up front, but the liner needs replacing every several years. Fiberglass sits between them: a fixed shape, a smooth gelcoat that needs fewer chemicals, and a fast install.
Choosing the dealer matters as much as the shell
Almost every fiberglass maker sells only through local dealers, who dig, set and backfill the pool and handle the first line of warranty service. A badly leveled or backfilled shell can cause problems no factory warranty covers. Check the dealer's license, ask how many of that brand they have installed, and get the shell, installation, equipment and decking as separate lines on the quote.
Pros and cons of fiberglass pools
What we like
- Installed in weeks, not months
- A smooth, non-porous surface that needs fewer chemicals
- Long structural warranties from most makers
- Built-in steps, benches and tanning ledges
Worth knowing
- Fixed shapes, and widths up to about 16 ft
- Needs crane access to the yard
- Freight from distant plants adds cost
- Some warranties end when you sell the house
The part a pool price leaves out
Get your yard checked by a local pool contractor
Crane access, excavation, the pad, electrical, fencing and permits decide most of the gap between a pool price and a finished backyard. In Southern California, the Bay Area and Greater Seattle, we can introduce you to 2 to 3 licensed pool contractors who can walk your yard and price that part.
Get quotes from pool contractorsHow we make money: Renology is paid by independent pool contractors in parts of California and Washington when we introduce them to homeowners. No pool maker pays us.
Frequently asked questions
How much does a fiberglass pool cost in 2026?
Manufacturer guides put a finished fiberglass pool at about $45,000 to $150,000, with most mid-size pools with standard decking at $65,000 to $90,000. HomeAdvisor's national average for a basic install is $33,270 (June 2026).
What is the typical cost of a 12 x 24 fiberglass pool?
A 12 x 24 ft pool falls in the small range of Thursday Pools' guide, $45,000 to $75,000 installed (September 2026). The patio, equipment and access decide where in that range you land.
What is the downside of a fiberglass pool?
Shapes are fixed, widths stop around 16 ft, a crane needs access, and some warranties do not pass to a buyer of your home.
How long does a fiberglass pool last?
Structural warranties run from 25 years to lifetime. A well-installed shell commonly lasts decades; the gelcoat surface is usually the first thing that needs work.
Can I install a fiberglass pool myself?
Some brokers sell shells to homeowners, but most manufacturers sell only through dealers, and River Pools does not sell for DIY installs. Leveling and backfilling a shell correctly is what protects it.
Compare the other types
Sources: Thursday Pools: cost guide · River Pools: cost guide · River Pools: install timeline · River Pools: size limits · HomeAdvisor: fiberglass pool cost