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, 2x1.35m membrane and 5x 3mm Steel u-Pins and 3 boxes containing 20 X-Grid Panels, 2x1.35m membrane and 5x 3mm Steel u-Pins
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Delivery costs will be calculated at the checkout page

£156.00

SKU: HTB-084
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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 benefit is the fact it can be used with any swim spa regardless of its make or model. If you look at the “compatibility” tab above you will find a list of suitable swim spas that can be used with this specific size base. If you cannot see your swim spa do not panic, use the dimensions of your spa to compare against our range of swim spa bases to find the most suitable. Alternatively, you can leave us a message or live chat us 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.

Additional information

Weight 47.88 kg
Dimensions 3960 × 2310 × 40 mm
Base Length

Base Width

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ASK A QUESTION

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.

Installation Guide

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Installing a Lay-Z-Spa onto a solid and non-slip green inflatable hot tub tile baseread more ❯
8ft x 8ft Hot Tub Base Customer Review
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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]
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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
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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
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See how Gary & Sheena used our plastic hot tub base as a solid foundation for their new hot tubread more ❯
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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
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Installation from Carl who used a 7ft x 5ft hot tub base under his new Canadian Spa Company Hot Tubread more ❯
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See how a 7ft x 7ft hot tub base was installed by Tony under his new Tropic Seas Hawaii Hot Tubread more ❯
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Stuart used one of our 7ft x 7ft hot tub bases under his new Typhoon 6 seater hot tubread more ❯
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