3 Types of In-Ground Pools and How to Choose One

a girl standing near a swimming pool

Selecting the right in-ground pool for your yard is an important process. In-ground pools are an investment, and whether you’re interested in a concrete, fiberglass, or vinyl pool, you want to make sure you’re happy with your decision. From maintenance and installation costs to style and design, here are the three most common types of in-ground pools and how to choose between them.

Factors To Consider When Choosing an In-Ground Pool

Unlike most above-ground pools, in-ground swimming pools and spas are a permanent installation, making them a more lasting feature of your yard. That means it’s even more important to consider what you want out of your in-ground pool before you start landscaping. Here are some things to keep in mind:

  • Budget: How much are you willing to spend on installing an in-ground pool?
  • Appearance: Different types of in-ground pools will look different in your yard. Concrete pools with tile or stone are endlessly customizable, while vinyl pools offer a classic appearance.
  • Longevity: Some in-ground pools will last longer than others. A concrete pool can last up to 50 years or more, but a vinyl pool liner requires replacement every 5 to 9 years. 
  • Installation Time: Are you willing to wait for the perfect pool to be installed, or are you looking to dive in ASAP?
  • Maintenance Requirements: Are you looking for a low-maintenance option, or a pool you can invest more time and money in down the line?
  • Size and Shape: Some pool styles are limited in the size and shape you can choose.
  • Chlorine vs. Saltwater: While chlorine pools can come in all varieties, saltwater pool systems work best in fiberglass or vinyl pools.

3 Common In-Ground Pool Types

If you have a crystal-clear vision of what you want from your in-ground pool, it’s time to choose what type to install. Here are the three most common types of in-ground pools, and some pros and cons for each.

  • Fiberglass
  • Vinyl Liner
  • Concrete

Fiberglass

A fiberglass pool with curvy edges
Photo Credit: Barrier Reef Fiberglass Pools / Wikimedia Commons / CC BY-SA 4.0

Fiberglass pools are sold as one-piece fiberglass shell units in different shapes and sizes. These are delivered to your home and installed by crane into the excavated hole for your pool. Because they come pre-made, there are some limitations on the appearance of your pool, and custom options are rare. Installation typically occurs in less than 2 weeks.

Fiberglass pools also won’t need acid washing or deep resurfacing like concrete pools. However, fiberglass pools may require a topical recoating depending on how well you maintain the pool over the years.

Fiberglass swimming pools are a good option for saltwater systems.

Cost

Their shipping and delivery system means that fiberglass pools are expensive to install upfront, with an average cost $47,000, and a typical range between $24,335 and $70,000. Over time, though, you’ll spend less on maintenance, as the slick, non-porous surface is resilient and resistant to algae. If properly maintained, a fiberglass pool will last 30 years or more.

Pros of a Fiberglass PoolCons of a Fiberglass Pool
Low maintenance costs over timeHigh upfront installation costs
Saltwater compatibleOnly available in certain shapes and sizes
The fiberglass surface resists algae growthUsually won’t last as long as a concrete pool
Fastest installation timeSome fiberglass pool finishes are slippery
Lasts longer than a vinyl-liner poolMay eventually require resurfacing, depending on how well the pool is maintained. 
Does not require acid washing
More durable than vinyl liner pools
If properly maintained, you might never need to resurface your fiberglass pool

Vinyl Liner

An empty pool with a vinyl liner
Photo Credit: Otavio Clemente / Canva Pro / License

Vinyl liner pools are mounted into metal frames supported by a pool of sand in the bottom, as well as “coping” that seals in the liner at the top. You can customize their shape and size – especially if you’re looking for a more complex pool design that a fiberglass pool can’t offer. 

Vinyl pools can also be saltwater compatible. However, if the pool has aluminum or steel walls, the saltwater may damage the metal. 

Compared to fiberglass pools, vinyl liner pools typically have high maintenance costs. Why? Because their liners deteriorate easily. The average vinyl pool lining will last between 5 and 9 years, and liner replacements add up over time. On average, vinyl liner replacement costs between $2,250 and $4,535.  

Vinyl pools aren’t as durable as fiberglass or concrete pools, so keep pets away from the pool. Otherwise, their sharp claws may tear the liner.

Pro Tip: Precise chemical balancing of your chlorine levels can extend the life of your vinyl pool liner, and opting for a model with fungus and UV protectors can also help.

Cost

Vinyl liner pools are the cheapest type of in-ground pool to install upfront, meaning you’ll save money, time, and headaches on pool construction. Typically, vinyl pool installation costs between $24,000 and $44,000. It takes about 2 to 5 weeks to install a vinyl pool, which is longer than fiberglass installation, but shorter than concrete. 

Pros of a Vinyl Liner PoolCons of a Vinyl Liner Pool
Cheapest in-ground pool type to installHigher maintenance costs than fiberglass pools
Customizable shape and sizeNeeds precise chemical balancing to protect the vinyl liner
Opting for fungus/UV protectors can extend pool lifeNot as durable as fiberglass or concrete
Takes less time to install than a concrete poolNot pet-friendly
Does not require acid washingTakes longer to install than a fiberglass pool
Can be saltwater compatibleRequires vinyl liner replacement every 5 to 9 years
Vinyl liner is susceptible to algae growth

Concrete

A curved concrete pool
Photo Credit: Creative Ignition / Flickr / CC BY 2.0

Concrete pools or gunite pools are the most sought-after variety among prospective pool owners, as these are the most durable and long-lasting pool types. These pools consistently balance pool cost with durability and appearance. To build them, concrete is laid into your backyard pool excavation site, where it’s supported by steel rods and sculpted into whatever shape you wish.

Concrete pools can last 50 years or more if maintained properly. Concrete pools are susceptible to algae and are rather high maintenance. Expect to pay for an acid wash every 3 to 5 years, with costs typically ranging between $525 and $1,775

Cost

Concrete pools are expensive to install. Most homeowners pay $52,990 on average, with concrete pool installation costs typically ranging between $31,000 and $71,665. You’ll need to take good care of your pool to make the most out of this investment, with regular cleaning, brushing, and chemical balancing. Expect to replaster the pool every 10 years.

Pros of a Concrete PoolCons of a Concrete Pool
Highly durableHigh maintenance costs
Easily customizable in shape, size, and colorHigh installation costs
Doesn’t corrode/oxidize; becomes stronger over timeInstallation may take 6 to 12 weeks or more
Has multiple finish options, including tile, plaster, exposed aggregate, and stone. May require replastering every 10 years
Can last up to 50 years or moreSusceptible to algae growth
Typically has a rough surface texture that can scrape swimmers
Saltwater can damage the concrete

In-Ground Pools Side By Side

There’s a ton of information out there about different in-ground pool types, but how can you make sure you’re getting the best fit for you? Let’s take a look at each pool type side-by-side to compare how they stack up.

VinylFiberglassConcrete
Longevity5 to 9 years per liner30 years or more50 years or more
Long-Term Maintenance— Liner replacements and precise chemical balancing. 
— Surface susceptible to algae. 
— Minimal maintenance. Possible resurfacing every 10 to 15 years. 
— Surface resistant to algae.
— Replastering every 10 years. Acid wash every 3 to 5 years. 
— Surface susceptible to algae. 
Average Installation Cost$24,000 to $44,000$24,335 to $70,000$31,000 to $71,665
Typical Installation TimeUnder 2 weeks2 to 5 weeks6 to 12 weeks
CustomizationShape and size customizableDifficult to customize premade shellsCan customize finish, color, shape, and size
Saltwater CapabilityCompatible with strict chemical balancing and certain materialsCompatibleSaltwater can be used, but it can damage the concrete over time. 

FAQ About In-Ground Pools

What type of in-ground pool is best?

The best pool for you depends on your needs and priorities in an in-ground pool. Concrete pools tend to balance durability with customization. Fiberglass pools are quick to install and have low maintenance costs. If you’re on a tight budget and want to customize the pool’s shape and size, vinyl liner pools might be the answer.

How much does pool maintenance cost?

On average, professional pool maintenance costs homeowners $2,000 to $4,035 per year.

What type of pool is easiest to maintain?

Fiberglass pools are the easiest pool type to maintain, as they aren’t prone to algae growth. Their maintenance costs are low in the long-term, considering you have to replace a vinyl pool’s liner every 5 to 9 years, acid wash a concrete pool every 3 to 5 years, and replaster a concrete pool every 10 years. Resurfacing a fiberglass pool is sometimes necessary, but not always.

When to Call a Pool Pro

If you’re installing an in-ground pool, don’t make this a DIY project. A pool service professional can help you at every stage of the process, from designing your pool to maintenance and upkeep down the line.

Main Photo Credit: Public Domain Pictures

Annie Parnell

Originally from the Washington, D.C., area, Annie Parnell is a freelance writer and audio producer based in Richmond, Virginia. She is passionate about gardening, outdoor recreation, sustainability, and all things music and pop culture.