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This is a great question! And one that needs addressing.
The first thing that any potential fiberglass pool owner needs to know is this:
Your pool will not be perfectly level.
I’m sure you probably have a lot of questions about this...that’s great, because we’ll try to answer them all here. We have this conversation with every single customer before the project begins, so we thought we’d have it with you too.
Have you ever seen someone try to level a pool table? It’s dang tough, and those things are only about 8’ long and extremely rigid. Imagine trying to level a 30’–40’ structure that twists, bends, and flexes like crazy.
To take this huge malleable vessel, set it in a hole, backfill it, and fill it with thousands of gallons of water, and have it turn out perfectly level is not within the realm of possibility (well, maybe one in a thousand). When it comes to leveling a fiberglass pool, we’re shooting for an acceptable tolerance, not perfection.
The industry standard states that a pool can be up to 1” out of level. At River Pools, we shoot for ½” or less. Sometimes we do far better, but occasionally we fall short…just trying to keep it real :)
There’s some common logic that comes into play here as well. For example, if you have a pool that’s out of level, let’s say ¾”, you have to consider where the high and low spots are on the pool, and from what angle people will be looking at the pool. If the main patio is on the shallow end of the pool (where people congregate), and there’s ¾” difference between the two deep end corners, that will be far more conspicuous than if the ¾” difference is between opposite corners on the deep/shallow ends.
It’s a matter of perspective. All that being said, the pool can be out ¾” anywhere and still be well within industry standards.
There are two factors that impact the levelness of a fiberglass pool.
This is a very complicated question because there are many variables that influence exactly how the problem will affect the pool…but I’ll give it a whirl.
Any time a pool is more than an inch out of level the questions need to be asked…Why and How?
If it was just a ‘bad set’ or if the pool mold was way out, and the rest of the installation went ok, then the pool will probably be fine. If the pool moved, shifted, or settled at any point during or after the initial installation, then there could be major implications like structural damage to the pool. If the pool has any abrupt changes in level, i.e., one place that ‘humps up’ or drops down, the pool could be twisted or manipulated in a way that could cause structural damage. These statements apply to pools that are less than 2” out of level…anything over that’s a different ball game. And like I said, there are many variables, so each pool needs to be considered independently.
If there’s no concern for structural damage, the only other real consequence to a fiberglass pool being out of level is aesthetics. But by and large, the average person cannot see a ¾” or even a 1” difference in pool level.
If the pool appears to be structurally sound and the parties involved don’t want to go through the hassle of re-setting the pool, there is something you can do to mask the issue.
If you’re fortunate enough to address this before the concrete patio has been poured, waterline tile can be installed level with the water in the pool. This will hide the discrepancy in level and is really the best solution. If the deck has been poured, unfortunately there aren’t many options for you with the exception of removing the concrete, installing the tile, and re-pouring it.
Well, there you go! More than you could possibly want to know about the level of a fiberglass pool.
If you have other questions, or if there’s something I forgot to address in this post, please leave a comment below.
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At River Pools, we manufacture world-class fiberglass pools for customers across North America. If you're interested in a fiberglass pool, feel free to browse our catalog of models, try out our pool pricing calculator, or request custom pricing using the button below.
You can also download our free ebook for more information on fiberglass pools. Happy swimming!
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Editor’s note (5/3/24):
This article was written by Jason Hughes, (Founder, River Pools Virginia, Genesis Course Instructor). The opinions expressed are those of the author. Any pricing information is based on information that was readily available at the time of publication.
River Pools is a brand of inground fiberglass pools produced via the River Pools division of the manufacturing facility in Fortville, IN. While our expertise is in fiberglass pool manufacturing, we are part of an extensive network of experts relating to all things inground pools. Our own collective experience from over the years spans manufacturing, project design, installation, and pool service. We often tap into this knowledge base and share information freely with homeowners, just like you, who are considering having a swimming pool installed in your backyard.
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River Pools® manufactures fiberglass pool shells and does not install pools. Pools are installed by locally owned and operated dealers and franchisees. The relationship between the dealers and franchisees to River Pools® is that of an independent contractor. River Pools Franchising LLC (Franchising) provides independently owned and operated River Pool franchisees with the right to market the River Pools brand of pool shells as a franchisee. Franchising does not manufacture pool shells. Due to the unprecedented and historic growth of the River Pools brand, this website contains an abundance of information that has been created over the last decade. Some of the content on this site may reflect prices, perspectives, processes, entities, and names that were relevant at the time but may not be as relevant today.
Consumers should consult their local installer (independent dealer or franchisee) for the most accurate and updated information based on the unique conditions of their property. Consumers should verify specifications with the installing dealer rather than relying on the information on this website, which is not intended to be a final specification.