Swim Spa Base Kit – 396x231cm

A foundation kit for swim spas with a foot print of up to 396x231cm

There is no need to go through a difficult and labour intensive install using concrete or paving slabs when you can use one of our easy to install, no-rot, weatherproof, incredibly strong and permeable swim spa bases!

  • Suitable for: Spas up to 396cm x 231cm
  • Depth: 40mm
  • Number of panels: 84 Panels
  • Made from: Recycled Plastic
  • Max load: Up to 420 Tonnes
  • Kit contains: 1 box containing 24 X-Grid Panels, 2×1.35m membrane and 5x 3mm Steel u-Pins and 3 boxes containing 20 X-Grid Panels, 2×1.35m membrane and 5x 3mm Steel u-Pins
IN STOCK - Delivery within 3-5 working days
Delivery costs will be calculated at the checkout page

£183.30

Not sure how many Hot Tub base panels you need?

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Product Code HTB-084
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What are your swim spa bases suitable for?

Our plastic spa bases are incredibly effective and versatile. They are a suitable foundation for almost all hot tubs and swim spas. Please contact us if you are unsure of compatibility.

What sub-base do I need under my swim spa base?

We recommend you prepare the ground below your base with approximately 100mm of a compact hard base (type 1 or type 3), a weed-suppressing membrane and sand to level.

What is the difference between compact hard base type 1 or type 3?

Compact hard base, type 1 is much finer and can occasionally dust while the compact hard base, type 3 is larger and more permeable.

Can I put the base straight onto grass or soil?

We recommend not installing directly onto grass or soil but instead, install onto a compact hard base as it creates a sturdy, even base. Soil or grass can and will most likely will absorb water leading to sinking and creating an uneven sub-base for your spa base.

Can your plastic bases be installed on to concrete slabs/pads?

Yes, they can be installed onto concrete slabs or pads as long as the existing ground is strong and level. The base will allow airflow under your spa and elevate it away from any potential surface water.

How much gravel or aggregate should I use to fill my base?

Approximately 8kg of gravel or aggregate is required to fill each panel, or 72kg per m².

What size gravel should I use?

We recommend using anything up to 20mm in size.

Does the base need to be filled with gravel?

Our bases are more than strong enough without a gravel fill, able to withstand up to 420 tonnes per sqm. The gravel can be used to compact and enforce even more whilst also being a decorative finish.

Does this product come with pins or membrane?

Yes, our swim spa base kits come with pins and a sheet of membrane.

Can the plastic base panels be cut to size?

Yes they can be cut and we recommend doing so with a fine tooth saw.

Do I need pegs or anchors to secure my base?

Pegs and anchors to secure you base are only necessary when installing on areas which have a gradient over 12%.

How do I know which side of the panel to put down?

The bottom of the base has ‘X-Grid’ written on it, indicating the face you put on the ground.

Can the base panels be stacked on top of each other?

No, they are not designed to be stacked.

Where can I find installation instructions?

Install guides can be found on the ‘downloads’ tab. In addition, more information on installations can be found through our blogs and YouTube videos.

Can I create a grass base with the use of your swim spa base?

Yes, grass can grow in the panels cells when correctly filled with soil and seed.

Do your plastic swim spa bases have a warranty?

Yes, our bases have a 10 year manufacturer warranty.

Can I be guaranteed the same colour all throughout my product?

Our products are new generation, manufactured entirely from post-consumer recycled plastic; this means you may occasionally find very slightly different shades of colour.

How much is delivery?

The cost for delivery can be seen when you add your product to basket and at checkout.

What Is A Plastic Swim Spa Base Kit?


Our Eco-Friendly plastic swim spa bases are made in the UK from 100% recycled plastic. The unique cell structure provides a stable base that will hold up to 420 tonnes per square meter whilst the interlocking slot and peg system makes it quick and very easy to install. The plastic base can then be filled with decorative gravel or a soil/seed mix for a grass effect and the open-cell design also offers a permeable solution which means that any overflowed water or rain will drain away naturally, unlike with typical concrete bases. As the base is manufactured from 100% recycled plastic, it is UV & weather-resistant, so unlike other foundations it will not rot or break down over time reducing maintenance costs in the future.

Will Your Base Be Suitable For My Swim Spa?


Yes, one of our bases greatest benefits is the fact it can be used with any swim spa regardless of its make or model. To check if this foundation size is suitable, simply compare your spa dimensions to this bases measurements. If they do not match up, worry not, we have a large range of foundation sizes to meet your requirements. For some help in finding the right sized base, you can call us, live chat us or leave a message to discuss your specific needs which we will be able to meet.


You can see examples of our spa bases being used by past customers by reading our spa base blogs.


For more information on how to install your swim spa base please read our Install Guide.

Weight 47.88 kg
Dimensions 3960 × 2310 × 40 mm

Installation Guide

Hot Tub Base Installation Case Study - 6ft x 6ft
6ft x 6ft Hot Tub Base Case Study - Featured Image
A case study from a past customer who used a 6ft x 6ft hot tub base under their new Canadian Spa Company Hot Tubread more ❯
8ft x 8ft Hot Tub Base Customer Review
8ft x 8ft Hot Tub Base Install Featured Image
A case study from Nick who used an 8ft x 8ft hot tub base from us as the foundation for a new hot tubread more ❯
Tahiti Spa Hot Tub Base [Customer Review]
8ft x 8ft Hot Tub Base Featured Image
A review from William and Mark who used an 8ft x 8ft plastic hot tub base as a foundation for their Tahiti hot tubread more ❯
7ft x 7ft Hot Tub Base - Customer Review
7ft x 7ft Hot Tub Base - Customer Review Featured Image
A case study from Joe who transformed his garden and used our plastic hot tub base as the foundation for his new hot tubread more ❯
49 Panel (7ft x 7ft) Hot Tub Base Installation - Customer Review
7ft x 7ft Hot Tub Base Installation - Customer Review Featured Image
See how Gary & Sheena used our plastic hot tub base as a solid foundation for their new hot tubread more ❯
Customer Review - 7ft x 7ft Hot Tub Base Kit Installation
7ft x 7ft Hot Tub Installation - Featured Image
See how David used a 7ft x 7ft hot tub base kit as the foundation for his new Blue Whale Spa Hot Tubread more ❯
7ft x 5ft Canadian Spa Company Hot Tub Base Installation
7ft x 5ft Hot Tub Base Install - Featured Image
Installation from Carl who used a 7ft x 5ft hot tub base under his new Canadian Spa Company Hot Tubread more ❯
7ft x 7ft Plastic Hot Tub Base Under An Artesian Spa Hot Tub
7ft x 7ft Hot Tub Base Under An Artesian Spa Hot Tub - Featured Image
See how a 7ft x 7ft hot tub base was installed by Tony under his new Tropic Seas Hawaii Hot Tubread more ❯
Typhoon 6 Seater Hot Tub Installed On Our 7ft x 7ft Plastic Base
7ft x 7ft Hot Tub Base Featured-Image
Stuart used one of our 7ft x 7ft hot tub bases under his new Typhoon 6 seater hot tubread more ❯
Inflatable Lay-Z-Spa Hot Tub Base - Customer Installation
Inflatable-Hot-Tub-Base-Featured-Image
Simon used our black inflatable hot tub tiles as a foundation for his new Lay Z Spa hot tubread more ❯
Product Reviews
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Not sure how many shed base panels you need?

Base Width: (in feet)

Base Length: (in feet)
CALCULATE
For the measurements given you will require
panels.
Click to add these to your cart.
ADD TO BASKET