What Foundation is Best for My Hot Tub?

Hot tub installed on a deck behind a modern home.

Now that you’re officially a hot tub owner, it’s time to turn your thoughts to installation. This process is vital to both your enjoyment and the longevity of your tub. To ensure a seamless installation, you’ll need to start with a good base. Let’s examine the top foundation options for your new spa.

1. An Existing Deck

If you have a deck, opting to install your spa on it can be a great choice. Before any work commences, however, you should have your contractor check it over. An empty hot tub may not weigh a lot but, once filled, it can weigh in at well over a tonne. That makes the stability and strength of your deck a crucial component. If your deck was built to code, you should be good to go. If not, you’ll need to do a few upgrades before the installation can safely take place.

2. An Existing Patio

A patio can be a very picturesque place for your new hot tub. But before you start planning how to work your spa into your patio’s decor, you’ll need to check it for wear and tear. If your patio runs at even a slight angle, it won’t work as a foundation for your hot tub. Age cracks and weather damage can also weaken it as a base.

If you come across these issues, you’ll need to have the patio fixed. Once the area is level and flat, you’ll be able to move ahead with the install.

3. Concrete

If you don’t have an existing deck or patio, a concrete slab can work well as a base. Not only is it an economical option, but having a slab poured is a relatively simple process. Your contractor will measure your spa to determine the correct dimensions before pouring a flat, level service. Once it is set, you will have a firm foundation for your tub.

4. Crushed Gravel

Another good option for a hot tub base, crushed gravel can add a bit of elegance to your install. Choosing the right gravel is key to your success, so be sure you purchase a type recommended by hot tub experts.  When used correctly, the gravel will wrap around the tub, holding it firmly in place.

5. Pavers

Pavers are another affordable option for your spa’s foundation. Installing the stones properly will help you get your pavers level — and that is critical for a solid base. If the stones are impossible to level on their own, try using a layer of cement between the stones and the tub’s bottom. This will fortify the foundation, keeping your hot tub firmly in place.

6. Prefabricated Pad

Used most commonly with indoor hot tub installs, it works well outside too. Prefabricated pads often come in kits. They can also be purchased to match the size of your unit. If you want something that’s quick and easy, a prefabricated pad is the way to go.

Vintage Hot Tubs

If you need a professional hot tub installation, our experts at Vintage Hot Tubs can help. As the provider of the best hot tubs and hot tub parts in British Columbia, we are well-equipped to help you through every stage of hot tub ownership. Drop-in for a visit at one of our showrooms or message us for more information about the services we offer.


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