Thinking about a hot tub on your deck? Here’s what you need to know

Your outdoor deck is already a favorite spot for entertaining, grilling, and unwinding after a long day. It’s where you soak up the sun, breathe in fresh air, and take a moment just for yourself.

But imagine adding a hot tub into the equation — the perfect combination of relaxation and rejuvenation right in your own backyard. 

The idea sounds amazing, but can you really install a hot tub on your deck? The simple answer is “yes.” However, there's more to it than a straightforward “yes” or “no.” 

Most manufacturers, like Instinct Spas, suggest placing your hot tub on a reinforced concrete pad or patio for maximum stability. But with the right preparation and professional guidance, your deck can become the ultimate spot for your new hot tub.

Hot tub on decking: What to consider

Choosing the ideal location for your hot tub is key to getting the most out of it. If your deck offers easy access and a cozy vibe, it could be the perfect spot. 

However, before you make any decisions, there are a few crucial factors to consider — like the size of your spa, age of your deck, and overall design.

Can your deck support a hot tub?

If your deck is already in place, you’ll need a pro to evaluate whether it can support the weight of a hot tub. Your contractor will inspect the materials, footings, and overall structure. The placement of beams, joists, and screws plays a huge role in the deck’s ability to hold up under the weight of a filled hot tub, which can range from 3,000 to 8,000 pounds, depending on the model. 

You’ll also need to provide your contractor with the hot tub’s specifications. Dimensions, water capacity, and weight are all important details that will help determine if your deck can support the added load.

You can find the dimensions of your Instinct hot tub on the product page for your model.

How old is your deck?

When thinking about placing a hot tub on your deck, it's important to remember that decks endure a lot from the elements — rain, wind, snow, and UV rays. Even with the best care, decks can still warp, mold, or even rot over the years. 

While some types of decking materials, such as composite, tend to hold up longer, it’s important to consider the age of your deck before installing a hot tub. If it’s been around for 10 or 15 years, those materials might be showing their age. In addition, building codes have likely evolved over the years. Reach out to a licensed contractor to see if your older deck might need a little TLC before it's ready for your new hot tub.

What will It cost to install a hot tub on your deck?

Cost is always a consideration. While an existing deck might seem like an easy option, reinforcing it can be expensive. The price tag for reinforcing a deck can climb to $5,000 or more, depending on the materials and options you choose. In some cases, it might be more affordable to install a concrete pad instead.

How big is your deck?

You can see yourself stepping out onto the deck and into the warm, bubbling water. As you plan to put your Instinct Spa on a deck, you might need help seeing the bigger picture. 

To help with planning, you can measure and tape off the dimensions of the hot tub to see where it might fit best. For a more tangible approach, cut a large piece of cardboard and move it around until you find the perfect spot. 

But don’t forget to consider how you’ll use the remaining deck space. Will there be enough room for patio furniture? Can you still entertain guests? Striking the right balance between your hot tub and the available space is key to creating a functional and inviting outdoor oasis.

Do you have a single-tier or two-tier deck ?

A two-tier deck can truly elevate your outdoor living space, but it requires thoughtful planning. If you’re thinking of placing the hot tub on the upper level, keep in mind that water splashes could cascade down, affecting anyone or anything below. To support the extra weight on an elevated deck, deeper footings may also be necessary. On the other hand, placing your hot tub on the lower level might require less structural support, but it could be less convenient to access from your home.

Where should the hot tub be placed on the deck?

If you’re set on installing your hot tub on the deck, choose the placement carefully. Consider ease of access, especially on chilly nights, and how the hot tub fits into the overall design. You want your hot tub to complement your view, not obstruct it. 

For example, positioning your spa near a mature tree can offer shade and privacy. But be mindful of leaves and debris that might fall into the water. Alternatively, placing the hot tub where it captures the best views of the landscape can turn every soak into a serene escape. Finding that sweet spot will ensure your Instinct Spa adds to your outdoor space rather than take away from it.

Other considerations before installing your hot tub

Once your deck is ready and you’ve picked out your hot tub, it might seem like all that’s left is to wait for delivery. But there are still a few things to consider.

Water access

Jets, waterfalls, LED lighting — hot tubs come with a lot of features. But the most important one? Water. 

Once your spa arrives, you'll need easy access to fill it up with water. As you consider installing your Instinct Spa on decking, ask yourself, “Is the spigot close to the deck?” Convenience is key. And when it’s time to drain the spa, think ahead: where will all that water go? Planning for both filling and draining ensures your relaxation stays uninterrupted.

Electrical requirements

Most hot tubs require a 50-amp, 240-volt GFCI connection. Ensure your electrician can install the proper breaker box close to where the hot tub will sit.

Getting in and out

When you are installing a hot tub on a deck, you have a few installation options. The spa can be flush with the decking material, partially recessed, or elevated. Each look has its own advantages and planning considerations. 

While a flush installation offers a sleek appearance, it can make entering and exiting more challenging. Lowering yourself to the deck surface and swinging your legs over the edge can be awkward — especially if you encounter a stray splinter or an uneven screw at that moment.

Raising the hot tub 18 to 24 inches above the deck surface can make entry and exit easier and provide a place to sit. If the hot tub sits directly on the decking, a set of spa steps will be necessary.

Adding a hot tub to your deck is a fantastic way to elevate your outdoor living space, but it requires thoughtful planning. With the right steps, you can create a safe and serene spot for soaking away the stress of the day.