How To Pour A Concrete Slab For A Hot Tub?


As you may know, concrete slabs are a perfect base for hot tubs because of the level and sturdiness they bring. If you are looking to pour concrete slabs onto your property to prepare for a hot tub, there are a few ways to do so. 

First, you need to frame the area on which you want to place your concrete slab. This can be done by adding wooden planks to create a shape that you want your tub to be on. Once the frame is secured, you then need to dig up around six inches. This way, your concrete base will go below the ground level, to ensure extra sturdiness. 

When this is done, you need to add a thin layer of gravel into the frame. This will ensure the concrete will set. After this is done, you can then begin to pour concrete into the frame to create a concrete slab for your hot tub. 

Cantrell’s Concrete LLC / Google Stock Images

What concrete should I use for a hot tub slab?

When it comes to choosing a type of concrete for a hot tub slab, it’s recommended to use a concrete mix such as QUIKRETE. This type of concrete mix creates a crack-resistant concrete that can become the perfect base for your hot tub. 

How thick does the concrete need to be for a hot tub?

If you are creating your own concrete slab for your home’s hot tub, you need to ensure that the base is thick enough. Typically, a sturdy and lasting hot tub slab needs to be 6 inches thick. A concrete slab that is this thick will need around 3,000 to 3,500 pounds of concrete. 

Hot tub bases can sometimes be 4 inches thick or even 2 inches thick, depending on the climate. Sometimes, those in colder areas will only lay around 2 inches for a base, with foam board under the hot tub to ensure durability. 

Home Warranty / Google Stock Images

How much does it cost to pour a concrete slab for a hot tub?

Of course, there is no set price for creating your own concrete slab. There are factors that will affect the final price. These factors include the side of the slab you choose to create, the type of materials for framing, the type of concrete mix, and the thickness of each slab. 

Generally, as a rule of thumb, a concrete slab will cost anywhere from $5 to $10 per square foot. So, when it comes to a base for a hot tub, concrete slabs may be anywhere from $500 to $2,500 to create. 

If you wish to have a professional service come in and do the work for you, this price will increase slightly. However, the $2,500 will likely be your highest price tag. 

Can I put a hot tub on a concrete slab?

Yes, you can place your hot tub on a concrete slab. Actually, the best type of base for your hot tub is a concrete slab. This is the superior choice because of its level, sturdy, and durability. Other choices can include a stone or brick surface, as long as the surfaces are level.


  • Jason

    Jason is an experienced writer, having contributed to many popular websites over the years. He currently writes for Big Hot Tub, a blog about everything hot tubs. When he's not writing or working on his blog, Jason enjoys spending time with his wife and two young children.