Open Request Form

Blog

Picking the Right Hot Tub Foundation – Concrete & Other Options

  |   Buying & Research Guide, Benefits & Features   |   No comment
Selecting the right foundation for your hot tub is crucial for ensuring a hot tub’s stability, longevity, and your overall satisfaction with the installation. When it comes to setting up your hot tub pad, a common question arises: does a hot tub need to be on concrete? In this guide, we’ll explore the key considerations and requirements for a solid hot tub insulation pad.

 

Does Your Hot Tub Need to Be on Concrete?

The recommended foundation material for a hot tub foundation includes a concrete hot tub pad, concrete paver/patio, pea gravel, crushed rock, or a reinforced deck.  Authorized Bullfrog Spas dealers can also sell or recommend pre-formed hot tub pads.

A concrete foundation provides stability and durability for your hot tub’s base. It can withstand the weight of a hot tub and resist shifting over time. A hot tub on concrete patio also provides a level surface, which is crucial for the proper functioning of a hot tub. The flat and even foundation prevents potential issues with the hot tub’s structure and operations.

 

How Thick of Concrete Do I Need for My Hot Tub?

 

As a general guideline, a concrete pad should be at least 4 inches thick. Additionally, your concrete hot tub pad should be reinforced with either rebar or mesh. The rebar and mesh should be attached to a bond wire for electrical grounding purposes. The thickness of the concrete hot tub pad generally depends on the weight of the hot tub when filled with water and occupants. The maximum filled weight of a portable spa can be as much as 6,000 lbs to 20,000 lbs, not including the extra weight of occupant. For larger or heavier hot tubs, including swim spas,  you might consider increasing that number to 6 inches or more. Consult with your spa dealer if you have any questions.

 

Alternatives to Concrete

While installing a hot tub on concrete slab is a popular choice, it’s not the only option. The key is providing a stable and level base for your hot tub to ensure proper functionality and longevity.

 

Decks

Wooden or composite decks provide an aesthetically pleasing alternative. Ensure the deck is sturdy enough to support the weight of the hot tub and that it’s properly leveled. Wooden decks can be suitable, but they require careful planning and reinforcement. Use proper joist spacing and consider adding extra supports to accommodate the weight of the hot tub and the water.

If you’re integrating the hot tub into an existing deck, ensure that the deck structure can support the added weight. Consult with a structural engineer to confirm the deck’s capacity and reinforce it if necessary.

 

Pea Gravel or Crushed Stone

This option offers good drainage and is relatively easy to install. However, ensuring a completely level surface can be a challenge.

Concrete Pavers or Patio Blocks

 

Hot Tub Paver/Patio blocks are an alternative to concrete, providing a stable surface. These can be easier to install and offer good weight distribution. Make sure to compact the soil beneath them to prevent shifting.

 

Grass

 

Can you put a hot tub on grass? We don’t recommend placing your hot tub on grass.

 

Additional Considerations

 
Consider how the hot tub will be delivered and installed. Think about how you will access the hot tub for maintenance or repairs. Ensure there’s sufficient access for equipment and any necessary modifications to the chosen foundation. It should allow for easy access to the equipment panel and other essential components.

 

Indoors or The Great Outdoors

 

When choosing a prime location, ask yourself who will be enjoying your new hot tub and if its purpose is to serve as a gathering place for entertaining family and friends or will it be used only privately by the adults in the household for therapy and relaxation. If planning to place your spa indoors, it must be in a location with excellent ventilation to prevent the build-up of steam and moisture in addition to having drainage access. If you’re planning to install your hot tub outdoors, you’ll want to incorporate the surrounding landscape to your best advantage by having a pleasant or scenic vista as the backdrop for the spa.

 

Access

 
If you’re installing your new spa outdoors, having convenient access to the main home as well as a place for wardrobe changes is essential. It’s important to choose a location where the spa blends into the environment in a natural way rather than looking like some eyesore that was just plunked down on a pad without any planning beforehand. Does the location you select as the prime spot for your spa afford users enough privacy and have you made plans to screen your hot tub activities from the prying eyes of onlookers or even the next door neighbors?
 
Consider also how the hot tub will be delivered and installed. Think about how you will access the hot tub for maintenance or repairs. Ensure there’s sufficient access for equipment and any necessary modifications to the chosen foundation. It should allow for easy access to the equipment panel and other essential components.

 

Level Ground

 

A level surface is paramount for a hot tub foundation. Uneven ground can lead to structural issues, affect water distribution, and even damage the hot tub over time. There should be no dips, sags, or unevenness in the hot tub pad. Do not use shims to level the spa as this could create tension on the spa and result in damage. There should be a maximum of ½” (1.27cm) slope in an 8‘ (2.44m) run. Use a level or consult with a professional, such as an authorized Bullfrog Spas dealer, to make sure the ground is even.

 

Local Codes & Regulations

 
Always check and adhere to local building codes and regulations. Some areas may have specific requirements for hot tub installations, including foundation specifications. Failure to comply can lead to issues down the line.

 

Drainage

 

Proper drainage is crucial to prevent water accumulation around the hot tub.

 

Next Steps

 

Investing time and effort into selecting the right hot tub foundation is crucial for the longevity and functionality of your relaxation oasis. Assess your budget, preferences, and the specific requirements of your property. Whether you opt for concrete, decking, or gravel, the key is to create a secure and level foundation that enhances your hot tub experience. When in doubt, consult with professionals. Structural engineers or hot tub installation experts can provide valuable insights tailored to your specific situation. For more information, check out our Bullfrog Spas Delivery and Installation Guide.

 

Design Your Own

 

Use our online Design Studio tool to select your model, JetPaks, and accessories. Once you’re done, you’ll receive an instant price quote.

 

DESIGN MY SPA & GET A PRICE

AUTHOR - Bullfrog Spas

Bullfrog Spas is a premier brand of personalized premium hot tubs. With proprietary hydromassage technology and an eye for contemporary design, Bullfrog Spas is revolutionizing the concept of the portable hot tub and providing a relaxation experience unlike any other. Discover the award winning spa of the future today.

No Comments

Sorry, the comment form is closed at this time.