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Fiberglass vs. Concrete Pools

When it comes to in-ground pools, there’s more than one option. You have your pick when it comes to style, location, but also the construction material of the pool itself. While most people think of concrete pools when they think of in-ground pools, concrete isn’t the only option available. One other popular option is fiberglass pools. So what it comes down to is the right choice for you. But what’s really the difference between the two? In today’s blog, let’s break down the way these materials differ and what might be best for your home.


Fiberglass and concrete pools tend to cost roughly the same upfront. Concrete pools might be a little more expensive than cheap fiberglass pools, but of course, you want a pool that will last, not just something cheap. That’s also why you have to consider long-term cost. Concrete pools need to be replastered every 10 to 15 years, which can cost as much as $10,000. Fiberglass pools, on the other hand, do not need to be replastered. Thus in the long run, fiberglass pools tend to offer more financial value.

Look & Feel

Fiberglass pools have a gel-coating that makes them feel smoother, so if you bump against the surface of the pool, it won’t scrape you as badly as other materials might. Concrete tends to be a rougher surface naturally, which is one reason why it needs to be replastered so often.

However, concrete does have one advantage over fiberglass when it comes to the look and feel. Fiberglass pools are shipped by road, so there are limitations when it comes to size and shape. Concrete is poured on site, which means concrete pools have much more flexibility when it comes to design. If you have a specific vision for your pool and fiberglass can’t achieve that, concrete might be the way to go.

Installation Time

If you want to install a concrete pool, you’re going to need to plan quite a bit in advance. Because the concrete is poured on site and so much has to be done in your backyard to make room for it, a concrete pool installation can take months. On the other hand, fiberglass pools are transported to your home as is, so most of the construction is the patio and decking. All together, it takes about 3-5 weeks to install a fiberglass pool.


Fiberglass will also be lower maintenance than concrete. It doesn’t have to be replastered every 10-15 years, and the gel coat on fiberglass pools have no impact on the water pH. All you’ll need in terms of fiberglass pool maintenance is a weekly water chemistry test and occasional pool cleaning. Concrete pools, on the other hand, will need a daily addition of hydrochloric acid in order to keep the water’s pH levels even, and you’ll need to clean the surface of the pool thoroughly each week to remove any algae.

Overall, fiberglass pools are great if you’re looking for something low maintenance and cost effective, but concrete pools are better if you need something truly custom and you’re willing to put in the work to keep it in shape. Ready for your own pool? Contact Donnelly Pools LLC today to get started with your order.

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