What is the Best Hot Tub Foundation? – Top 6 Ways To Support Your Hot Tub

Hot tubs offer a powerful way to relax, providing a wide range of benefits when used regularly. 

Investing in a hot tub is a big step, and you want to ensure you’re prepared for its arrival with a strong, supportive hot tub foundation that will last through its lifetime! 

Hot tub foundations aren’t just to support your hot tub though. 

They are also a great way to add to the unique style of your space, becoming a statement piece or decorative addition to your backyard escape.

There are a variety of hot tub foundations, and which one you choose for your space will ultimately be up to you and your own personal preferences and style. 

The 6 Best Hot Tub Foundations

Hot tubs can’t sit directly on grass because of their weight. Over time, they will sink into the ground, causing damage to the structure of your hot tub. 

To protect your hot tub long-term, you’ll need a strong and reliable foundation!

A hot tub foundation can be made up of many things, and it’s important to verify which one is recommended for your hot tub in the warranty before choosing one. 

While many people assume they need to have a specialty foundation installed, you may also be able to use existing structures in your yard as your hot tub foundation. As long as they are in good condition and can support the weight of your hot tub, you’ll be able to factor them into your selection.

Let’s look at some of our top recommended hot tub foundations!

1. Concrete Slab 

Concrete slabs are one of the most popular hot tub foundations because they’re long-lasting, strong, and easy to add to your backyard. They are, however, a permanent solution, so if you’re looking for something that you can move in the future, concrete won’t be the best option.

When installing your concrete pad, you’ll want to ensure you give it time to cure properly to make it as durable as possible. You will also want to consider the weather when installing it. If the temperature changes too much while the concrete is curing, you may end up with cracks, damaging its overall strength. 

This foundation type is ideal for those who are looking for a lower-cost, easy maintenance solution. Concrete can easily be sprayed down to keep it clean, and you can add some decorative trim to make it more aesthetically pleasing.  

2. Crushed Gravel

Crushed gravel is an easy and cost-effective solution for your hot tubs foundation, offering both support and drainage, protecting your hot tub for years to come. 

A common mistake people make when installing a gravel foundation is using pea gravel, thinking it’s the same as crushed. This is far from the truth and could cost you greatly. 

Pea gravel is smooth, which stops it from locking into place properly, causing it to move under the weight of your spa.

Crushed stone, on the other hand, has jagged edges, making it capable of locking together and easily holding its form. 

When using crushed gravel as your hot tub foundation, it will need to be a thick enough layer to support the base of your hot tub and have a harder surface below it. The last thing you want is your gravel sinking into the soil beneath it under the weight of your hot tub!

For this option, you’ll want to create a square base with wooden shuttering to contain the gravel. Then, simply place the hot tub on top of the gravel, fill it, and get your best fuffy robe ready for your first spa session!

3. Your Patio

Your existing patio can provide an easy way to add a hot tub to your backyard. 

Before you choose to go with this solution, ensure your patio is level and in good condition. Thoroughly check for any cracks or damage to your patio, and take a level to verify it’s perfectly leveled. Even the slightest offset could cause damage to your hot tub over time. 

Adding your hot tub to your patio can help create a clean backyard appearance, tying your hot tub in naturally to your existing space, especially when paired with the right colored cabinet.

4. Paver Stones

When you use paver stones, you’ll be able to create a more unique look for your hot tub foundation with a wide variety of options to choose from. 

When using paver stones for your hot tub, look for ones that are at least 2 inches thick. If they are any thinner, they’ll crack and break under the weight of your hot tub. 

To increase the life span of your paver stones, you’ll want to have a base to install them on instead of putting them directly on top of the ground. You can do this by layering gravel and sand underneath to support your paver stones.

With various colors, shapes, and styles, you’ll be able to design a statement piece that reflects your personality, whether you want a classic and clean look, a European style, or something a bit more flashy, there’s a stone that can make it happen.

5. Deck

Decks are also a common option for a hot tub foundation, with many people already having one in their backyard. 

Much like existing patios, decks also need to be in good condition and be level to support your hot tub without causing damage to it over time. 

If you’re building a deck specifically for your hot tub, choose wood that can withstand the elements, like pressure-treated ones. You can also create a protective barrier using stains, which will need to be reapplied throughout the years. 

If your deck is elevated, you’ll want to ensure it can withstand the weight of your hot tub when it’s filled and has people in it before you choose this solution. 

Using your pre-existing deck as your hot tub foundation is cost-effective without taking over any of the green space you have maintained in your backyard. 

6. Spa Pads

Spa pads offer a less permanent foundation for your hot tub, giving you peace of mind. 

Usually, these pads will come with thick, interlocking pieces, giving them some durability and customization for size. 

These pads also offer a long-lasting solution without a hefty price tag. As with any of the other foundation options, they will still need to be on a perfectly flat surface to keep your hot tub from facing future damage.

Spa pads are one of the least permanent solutions, making them easy to move in the future should you decide to move your hot tub location. 

Can a Hot Tub be Installed in the Ground?

The simple answer is yes. However, there are some factors to consider before choosing this option.

When sinking or partially sinking your hot tub into the ground, you’ll still need to include a solid foundation for it to sit on. One of the best solutions is using a concrete or crushed gravel foundation. It’ll last longer without requiring regular maintenance for its upkeep, making it the easiest solution for a recessed hot tub installation. 

You’ll also need to include and install a drain system to avoid the potential of water buildup around your hot tub. If the hole you put your hot tub in floods or holds water, you could damage the frame of the hot tub and its system in total. 

Lastly, you’ll want to ensure that there is access to your service panel. You should include extra space around your hot tub, leaving a few feet on all sides. Decking can cover this section, maintaining your inground look while making it easy for service technicians to access your service panel, saving you additional maintenance fees in the long run. 

You can also create the look of your hot tub being underground if you have an elevated deck. 

You can do this by placing the hot tub next to the edge of your deck with it exposed on one side, extending your deck to wrap around it, or having a professional cut a space in your existing deck to sink it into. 

This will give the illusion that it’s underground while making it easy to access your panels and drainage system. It also creates a seamless look with the appeal of a high-class spa you’d find during a weekend getaway!

Elevated decks also provide a natural way to create levels within your backyard. This gives you a unique way to have the top of your hot tub in line with your deck, making use easy and eliminating the need for steps to get in and out of your spa. 

Remember, if you choose to align your hot tub with your elevated deck, you’ll still need to consider one of the above foundation options. 

Hot Tubs In West Virginia and Pennsylvania

Choosing the right foundation for you will ultimately be determined by your lifestyle, how much you value the aesthetics of your space, your existing structures, and your budget. 

Designing your dream backyard escape doesn’t have to be a challenge, and you don’t have to do it alone!

Koval Building Supply is a family-owned business with three locations; Morgantown, Granville, and Uniontown

If you’re ready to embrace a relaxation experience unlike any other, you’ll be sure to find everything you need at any one of our dealerships. 

With 54 years of selling Jacuzzi® Hot Tubs, the industry-leading hot tub brand, our team of dedicated professionals has the expertise to answer any questions and can help you discover the right hot tub for your lifestyle. 

Contact us, or visit your nearest location today!

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