Concrete or fibreglass pool? It’s the first big call most homeowners face when planning a backyard pool. The two materials shape every decision after — pool design, surrounds, installation time, and ongoing maintenance over the life of the pool.
This guide compares concrete and fibreglass pools across the things that actually matter: how each pool is built, how each ages, how flexible the design is, and which material is the best pool choice for your outdoor space and design vision. No price quotes — just an honest look at the practical trade-offs.
How a Concrete Pool Is Built
A concrete pool is built on site. Steel reinforcement is shaped into the pool shell, then sprayed or poured concrete forms the structural integrity of the inground pool. Tiling, rendering, or a quality pool surface like pebble or beadcrete is applied last.
The construction process takes longer than fibreglass — typically 8 to 12 weeks of on site work — because every concrete pool is custom built. The reward is total design flexibility.
Custom Design and Shape
Concrete options are highly customisable. Any shape, any depth, any size, any combination of features — wet edges, swim-up benches, integrated spas, sun ledges. A concrete pool fits the design vision rather than the other way round.
Concrete Surface Finishes
Concrete swimming pools accept any surface finish: glass tile, ceramic mosaic, exposed aggregate, polished pebble, or premium beadcrete. The pool surface is also where most of the visual character comes from. The right material gives the water its colour and the pool its feel.
How a Fibreglass Pool Is Built
A fibreglass pool is a pre built shell, manufactured off site and craned into a prepared excavation. High quality fibreglass pools are formed from layers of glass fibre, resin, and a smooth gelcoat surface that becomes the finished pool interior.
Site preparation, plumbing, and backfilling typically take 2 to 4 weeks once the shell is on site — significantly faster than a concrete pool of equivalent size.
Standard Sizes and Shapes
Fibreglass pools come in a full range of standard shapes — rectangular, kidney, freeform, plunge pool, and lap configurations. Custom design is limited to what the manufacturer offers, but modern catalogues are broad enough that most homeowners find a layout that works.
The Fibreglass Pool Surface
The pool surface on a fibreglass shell is a smooth gelcoat, which means it’s gentle on bare feet and naturally resistant to algae adhesion. The surface ages well when looked after, though it can develop chalking or fading after many years.
Concrete vs Fibreglass: Construction Side-by-Side
Installation Time
Fibreglass pools win on installation time. From site preparation to swimming, a fibreglass pool is typically a one-month project. A concrete pool is closer to three months. For homeowners who want fun times in the water this summer, that gap matters.
Design Flexibility
Concrete wins on design flexibility, by a wide margin. If your backyard has unusual dimensions, level changes, or a specific design vision that doesn’t match a pre built shell, concrete is the better choice. Concrete pools tend to be the standard answer for highly bespoke projects.
Long Term Durability
Both materials deliver long term durability when built and installed correctly. Concrete pools have decades of proven performance and can be resurfaced repeatedly. Fibreglass pools have greater durability against ground movement than older fibreglass generations — modern shells flex slightly with groundwater pressure rather than cracking.
Surface Wear and Maintenance
Concrete pools require more ongoing maintenance than fibreglass, in most cases. The porous concrete surface needs regular brushing to control algae and pH balancing tends to be more involved. Fibreglass pools require fewer chemicals because the non porous gelcoat resists algae. Many existing pool owners report the maintenance load on fibreglass is meaningfully lower over time.
Resistance to Groundwater and Ground Movement
Concrete swimming pools handle high groundwater pressure well thanks to their structural integrity, though installation in waterlogged sites still demands engineering input. Fibreglass shells can be affected by groundwater pressure if site preparation is poor — a quality install with proper drainage avoids this.
Pool Design Considerations
Pool Shape and Size
Concrete pools support any shape — long lap pool, freeform tropical, geometric plunge pool, or above ground concrete pool variants integrated into a slope. Fibreglass restricts you to the manufacturer’s shape catalogue, though that catalogue is now extensive.
Plunge Pool Options
For plunge pool projects, both materials work well. Pre built fibreglass plunge pools are quick to install. Custom concrete plunge pools allow integration with the architecture, custom tiling, and sun ledges built to fit the brief.
In-Ground vs Above-Ground
The vast majority of Australian residential pools are inground pool installations. Concrete is more flexible for partial above ground or split-level above ground pool configurations. Fibreglass is almost always installed as a fully in ground pool.
Pool Surrounds and Landscaping
The pool surface is only half the story. The surrounds — coping, paving, planting, and shade — determine how the pool reads as part of the outdoor space.
Concrete Pool Surrounds
Concrete pools allow the most design flexibility in surrounds because the pool itself is custom built. Coping can match paving exactly, sun ledges flow into deck, and tiled waterlines tie into bathroom finishes inside the house.
Fibreglass Pool Surrounds
Fibreglass pools have a fixed shell shape, but the surrounds are still up to you. Limestone or travertine paving, timber decking, vertical garden walls, and integrated planting all work just as well around fibreglass as concrete.
Best Pool Material for Western Australia
In Western Australia, the choice between concrete and fibreglass pools comes down to design ambition and timeline. Perth’s sandy soils suit both materials when proper site preparation is done. Both pool types are ideally suited to Perth’s long summers and short winters.
Concrete is often chosen for high-end builds where the pool, the house, and the landscaping are designed as one project from day one. Fibreglass is often chosen by families who want a quality pool delivered fast for the next swim season.
Cost Considerations Without Quoting Prices
The price difference between concrete and fibreglass pools depends on size, shape, finish, site preparation, and surrounds. As a generalisation, fibreglass tends to be more cost effective on a like-for-like project because the shell is mass-produced and on site work is faster. Concrete pools tend to sit at a higher material cost and labour cost — but they also deliver design and longevity benefits a fibreglass shell cannot.
Anyone comparing concrete and fibreglass pools should treat material costs and ongoing maintenance as one combined number across 15 to 20 years, not just the upfront price difference.
What Existing Pool Owners Say
If you scan the major online forums, multiple Australian based users discussing their concrete or fibreglass pool experience tend to report the same patterns. Pool surveys and pools reports back this up: fibreglass owners praise low maintenance and quick installation; concrete owners praise design and longevity.
Existing pool owners who chose concrete usually cite the design vision and the ability to integrate with the rest of the outdoor living area. Existing pool owners who chose fibreglass usually cite installation time and easier ongoing care.
Heat Retention and Chemical Use
Concrete and fibreglass pools each retain heat slightly differently. Fibreglass shells warm up faster in the sun and tend to retain heat for longer once the air cools, which can extend the swimming season. Concrete pools take longer to warm but hold a more consistent temperature once heated.
On chemicals, fibreglass requires fewer harsh chemicals to keep the water balanced because the gelcoat surface resists algae. Concrete pools are not bad on chemicals, but the porous surface can demand stronger chlorine cycles and more frequent shock treatments to control algae bloom in summer.
Each Pool Type Has Its Own Set of Strengths
Each pool type has its own set of advantages, and neither material is universally better. Concrete pools create the design freedom to build virtually any shape; fibreglass pools create a fast, predictable build with low maintenance. The right choice is the one that matches what you want the pool to create in your backyard.
Choosing the Right Material
When Concrete Is the Right Material
Choose concrete if your project demands a specific shape, a unique pool design, integration with custom landscaping, or a premium finish like glass tile or beadcrete. Concrete is the right material when the pool is the centrepiece of a fully designed outdoor living project.
When Fibreglass Is the Right Material
Choose fibreglass if you want a high quality pool installed fast, with low maintenance, and the manufacturer’s shape catalogue offers a layout that suits your backyard. Fibreglass is the right material when you want all the benefits of a pool without the longest possible build process.
Getting the Construction Right
Whichever material you choose, the difference between a great pool and a problem pool is in the construction. Reputable pool builders will detail site preparation, drainage, structural integrity, and finish before signing a contract. The big deal points are not the brochure shots — they’re how the pool handles groundwater pressure, how the pool surface is sealed, and how the surrounds tie into the house.
Frequently Asked Questions
Which is better, concrete or fibreglass pool?
Neither is universally better. Concrete is better for custom design, premium finishes, and fully integrated outdoor living. Fibreglass is better for fast installation, low maintenance, and budget-conscious projects.
Do concrete pools require more maintenance than fibreglass?
Yes, generally. Concrete pools require more ongoing maintenance because the porous concrete surface needs regular brushing and balanced chemistry. Fibreglass pools require fewer chemicals thanks to the non porous gelcoat finish.
How long do fibreglass pools last?
High quality fibreglass pools deliver long term durability of 25 to 30 years before the gelcoat may need refurbishment. Modern fibreglass swimming pool shells flex with ground movement rather than cracking.
How long do concrete pools last?
A concrete pool can last 50 years or more, with periodic resurfacing every 10 to 15 years. The structural shell itself rarely fails when built correctly.
Which pool installs faster?
Fibreglass installs significantly faster — usually 2 to 4 weeks once on site, compared with 8 to 12 weeks for a concrete pool of similar size.
Can both pool types include a spa?
Yes. Concrete pools can be built with a fully integrated spa as part of the same shell. Fibreglass shells with built-in spa configurations are also available from major Australian manufacturers.
Planning Your Pool Project
The right pool material is the one that fits your design vision, your timeline, and the outdoor living life you want to build around it. Whether you choose concrete or fibreglass, the surrounds, planting, paving, and landscaping define how the finished pool actually feels. Our team handles full concrete pool design and construction alongside spa integration,paving, decking, and water features — so the whole outdoor space is designed and built as one project from the very beginning.
