Can a Swim Spa Be Put in a Basement?

Swim spas are a convenient alternative for those who might not have enough space for a full sized swimming pool. When it comes to indoor swimming, the chances that you have the room for a full sized swimming pool are even lower. But can you put a swim spa in a basement? With the right amount of planning and some preparatory work, there’s no reason why you can’t install a swim spa in your basement. To find out how to do this properly, check out this article.

Delivery Route

The first thing that needs to be taken care of when taking delivery of a new swim spa is ensuring that it can make it to the installation location. This is obviously much less of a worry if you’re building your house at the same time. But if you’re looking to install your swim spa in an existing house, comparing the measurements of the swim spa with the doors, overhead clearances and tight corners is imperative. Ensure your swim spa will fit into your basement before taking delivery or you may find yourself in a very difficult and embarrassing position.


Swim spas contain hundreds of gallons of water. Every so often you’ll need to drain that water to give your swim spa a thorough cleaning. Having the facilities to drain that amount of water on a regular basis is essential. While you’re at it, you might as well keep your eye open for an easily accessible water source.  When scouting the location for your swim spa, pay special note to the plumbing and drainage system in your basement and situate accordingly. The results of this decision will affect you for many years to come.


Similarly, you’ll need to ensure your floor is stable and level to support the installation of the swim spa. This is usually not a problem in basements, but don’t put yourself in a position for any surprises. You’ll also want the floor graded so that any runoff water ends up flowing towards the drain rather than pooling. Flooring materials should be able to withstand moisture and humidity. Carpet and wood are not great choices, while tile or sealed cement are much more appropriate. Adding a slip resistant surface will also cut down on the instances of slipping and falling.

Air Flow

Indoor swim spas can create humid and moist conditions which can wreak havoc on the internal structures of your house. Problems with mold, wood rot and condensation are all very real possibilities without proper air flow. You’ll need to invest in a powerful exhaust fan. You might also want to supplement it with a ceiling fan and a dehumidifier. This will bring down the moisture content in the air and reduce the possibility of humidity related problems.

Wall and Ceiling Protection

Even with proper ventilation, the humidity produced by your swim spa can cause problems with your walls and ceiling. To be safe, it’s best to install a vapour barrier in the room the swim spa is located. This could take the form of polyurethane foam or impermeable sheets of plastic. You’ll also want to use waterproof drywall when finishing your ceiling and walls. There are also paints on the market that contain additives which prevent the growth of mold and mildew in moist and humid environments.

Swim Spa Covers

In the outdoors, a swim spa cover is the primary method of keeping out dirt and debris. Ideally you won’t have to worry about this so much with an indoor installation. However, you’ll still need to depend on your swim spa cover to reduce water evaporation and the resulting increase in humidity. Covers also provide a layer of protection against children or pets inadvertently falling into the water.

To learn more about indoor swim spa installation, download a free buyer’s guide below today, or visit us at our London swim spa store.

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