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Garden Base Kit – 4x4ft

Garden Base Kit with Base Panels, Membrane & Pins - Covers 4x4ft (16ft²)

Suitable for use under garden buildings with a footprint of up to 4ft x 4ft, or multiple can be connected together as part of a larger base.

Our plastic garden base panels are the perfect alternative to traditional wood or concrete bases. Manufactured from a highly durable recycled plastic, our strong, easy-to-install, weatherproof and rot-free panels are easily interlocked without any additional fixings to create a base suitable for use under any garden building.

  • Base Dimensions (approx): 4ft x 4ft (16ft²)
  • Number Of Panels: 16 Panels
  • Individual Panel Size: 330x330mm
  • Depth: 40mm
  • Made From: Recycled plastic
  • Max Load: Up to 420 tonnes
  • Kit Includes: 2m x 1.35m Membrane & 5 U-Pins
IN STOCK - Delivery within 3-5 working days
Delivery costs will be calculated at the checkout page

£36.43

Product Code PSBK4x4/16
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What are your Garden Bases suitable foundations for?

Our plastic garden bases are incredibly versatile and can be a suitable base for almost all sheds, greenhouses, log cabins, summerhouses, wendy houses, hot tubs, swim spas and more. Please contact us if you are unsure of compatibility.

What sub-base do I need under my garden 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 most likely will absorb water leading to sinking and creating an uneven sub-base for your garden base.

Can your garden 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 the structure and elevate it away from any potential surface water.

Should I use a damp membrane between my base and my garden structure?

No, we do not recommend this as although it will keep damp from rising to your structure, any dampness that leaves your structure will then sit on top of the membrane directly under.

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 garden base need to be filled with gravel?

Our garden 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 garden base kits come with pins and a sheet of membrane.

Can garden 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 garden base?

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

Do your plastic garden 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.

About Our Garden Base Kits

With each kit you will receive the following:

  • 16 garden base panels manufactured from recycled plastic covering approximately 4ft x 4ft (16ft²),
  • A 2m x 1.35m membrane which is laid under the base to prevent weeds from growing up and through the foundation whilst still allowing rain and nutrients to reach the ground below,
  • 5 U-pins used to secure the membrane into the ground.

You can use the 4ft x 4ft kit alone or combine multiple kits together to create larger base sizes.

Our eco-friendly bases are manufactured in the UK from 100% recycled plastic. Owing to their unique formulation, the flexible but incredibly strong blend of recycled plastic makes every foundation both UV and weather resistant. Its resilience against the sun, heat and rain means that your plastic shed base will not break down or rot away over time which may be the case with more traditional foundations such as concrete or wood. With a specially designed cell structure too, our bases have a large load-bearing capacity (up to 420 tonnes) as well as being fully permeable which means that rain and other liquids will drain naturally away from your garden structure, reducing the likelihood of surface water being absorbed and potentially rotting your shed or hot tub.

As well as the previously mentioned benefits, our hot tub base panels are incredibly simple to install due to their lightweight frame and slot and peg connection system which allows a full foundation to be laid in no time at all. You also have a choice on how to finish your garden base installation, you can fill the panels with decorative gravel for a french drain system finish, fill with soil and seed to create a grass effect or simply leave unfilled!

Will My Garden Building Or Hot Tub Be Compatible With Your Base Kit?

Simply, yes. Our bases can be used as a solid foundation for almost any garden building or hot tub regardless of their size, shape or purpose. They will support sheds, hot tubs, summerhouses, greenhouses, log cabins and much more – as long as the base is the correct size!

Our versatile base kit is suitable for use under:

  • Sheds
  • Hot Tubs
  • Swim Spas
  • Log Cabins
  • Playhouses
  • Greenhouses
  • Summerhouses

For information on how to correctly install your base, take a look at our Installation Guide which will help you through the process of laying your own garden building foundation. If you cannot find the correct sized plastic base for your garden structure or have any questions regarding our base or other products then please do not hesitate to contact us, you can call us, live chat to a member of our staff now or leave us a message.

Weight 9.7 kg

Installation Guide

Garden Base Installation Video
How To Build A Shed Base & Shed - By OurAllotmentStory
How To Build A Shed Base & Shed - Featured Image
See how OurAllotmentStory used our plastic shed base as the foundation under their upcycled shed which was built using pallets and wooden planksread more ❯
How To Anchor A Plastic Shed Or Metal Shed To A Plastic Shed Base
Anchor Metal Shed To Plastic Base - Featured Image TGR
If you're wondering how you can secure your new shed to one of our plastic shed bases, read this blog to see just a few of our recommended methods of anchoring.read more ❯
Greenhouse Base - The Benefits Of A Plastic Base
Greenhouse-Base-Featured-Image
When buying a greenhouse there is a large selection of structures to choose from but when it comes to a base there is only one choice...read more ❯
14ft x 8ft Plastic Summerhouse Base Installation
14ft x 8ft Plastic Summerhouse Base - Featured Image
Having ordered himself a new Norland Newark 3 Summerhouse from Simply Log Cabins, Lewis was in need of a suitable foundation on which to install his new garden... read more ❯
Plastic Shed Base Installation By Renovation Bay-Bee
Our latest case study comes from Renovation Bay-Bee who used our 12ft x 10ft Plastic Shed Base as the foundation to her new Waltons Garden Shed. In this... read more ❯
6ft x 4ft Plastic Shed Base Installed Under A Fearnwood Products Shed
This case study comes from Peter who purchased a 6ft x 4ft Shed from Fearnwood Products who are based in Benfleet. His new shed was going to be... read more ❯
Summerhouse Base Installation - 12ft x 6ft Smiths
This case study comes from Mark who was searching for a suitable foundation for his new 12ft x 6ft Summerhouse by Smiths Sectional. After having a summerhouse made... read more ❯
A B&Q Wooden Shed Installed On A 10ft x 8ft Plastic Shed Base
This case study comes to us from Jeanette and her husband who were looking to install a wooden shed for storage at their school on behalf of Friends Of... read more ❯
A Shedlands Wooden Shed Installed On An 8ft x 6ft Plastic Shed Base
This case study comes from Yvette and Andrew who were looking to replace their old rotting shed with a new one. As the old one had become worn,... read more ❯
An 8ft x 6ft Plastic Base Under A Greenhouse Stores' Greenhouse
Greenhouse Base Installed and Up close
Our next case study comes from Rosie who had recently ordered an 8ft x 6ft Halls Popular Greenhouse. After placing her order it was recommended that she should... read more ❯
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