Garden Base Installation Video

Garden Base Kit With Base Panels, Membrane & Pins - Covers 5x4ft (20ft²)

Suitable for use under garden buildings with a footprint of up to 5ft 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 concrete or wood 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.): 5ft x 4ft (20ft²)
  • Number Of Panels: 20 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
Read full description
IN STOCK - Delivery within 3-5 working days
Delivery costs will be calculated at the checkout page


SKU: PSBK5x4/20
Plastic Shed Base Logo 250x250

You may also like…

About Our Garden Base Kits

With each kit you will receive the following:

  • A 5ft x 4ft plastic base made from recycled plastic covering approximately 5ft x 4ft (20ft²),
  • A 2m x 1.35m membrane which is laid under the base to prevent weeds and plants from growing up through the foundation whilst allowing rain to drain away naturally,
  • 5 U-pins used to secure the membrane into the ground.

Our eco-friendly bases are manufactured here in the UK from 100% recycled plastic. Owing to their unique formulation, our strong but flexible blend of recycled plastic makes every foundation both UV and weather resistant. Its resilience against the sun, rain and heat means that your garden base will not rot away or break down over time which can be the case with more traditional foundations such as wood or concrete. With a specially designed cell structure 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 building, reducing the chances of surface water being absorbed and potentially rotting your shed.

On top of the previously mentioned benefits, our base panels are incredibly simple to install thanks to their lightweight frame and slot & peg connection system that allows a full foundation to be laid in no time at all. You also have a choice on how to finish your plastic base installation, you can either just leave the panels unfilled, fill the base with decorative gravel for a french drain system or use soil and seed to create a grass effect!

Will My Garden Building Be Compatible With Your Base Kit?

Simply, yes. Our bases can be used as a solid foundation for almost any garden building regardless of its shape, size or purpose. They will support sheds, summerhouses, greenhouses, log cabins and much more – as long as the base is the correct size! If you cannot find the correct 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 leave us a message or live chat to a member of our staff.

The garden base product is suitable for:

  • Sheds
  • Summerhouses
  • Greenhouses
  • Log Cabins
  • Playhouses

For details on how to correctly install a plastic base, take a look at our Installation Guide which will help guide you through the process of laying your own garden building foundation.

Additional information

Weight 12.96 kg
Base Length

Base Width


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.

Installation Guide

Garden Base Installation Video
Garden Shed Bases – A Base for Your Shed
X-Grid gravel driveway Featured Image
Our Garden Shed base is a long term solution made from 100% recycled plastics. Garden shed bases are the building blocks to any great shed. Our garden shed bases... read more ❯
Things to Consider When Building a Shed Base on Uneven Ground
Little House on The Corner 2
If you're considering building a shed base on uneven ground, STOP! When considering adding a shed to your garden it’s really important not to rush into it because... read more ❯
Making the Most of Your Outdoor Living Space
Making the Most of Your Outdoor Living Space - Featured Image
Gone are the days when a garden was nothing more than a patch of grass and a few floral borders where you could lay out the towel to... read more ❯
Shed Base Company Uses Eco-Friendly Recycled Plastic
Eco Friendly Base
Each panel is made in the UK from 100% recycled plastic If you are planning to erect a shed or any structure in your yard to store your necessary... read more ❯
How to Select the Right Shed for Me
Right Shed For Me FI
How to Choose the Right Garden Shed It is so easily overlooked, but choosing the right shed can be a big decision especially since you'll have to live with... read more ❯
No Base? No Worries
Shed Base and Gravel
A new potting shed, storage shed or summerhouse can be a wonderful addition to a property. However, many people who purchase ready-made timber outbuildings do not make provision... read more ❯
Save Money and Time building a Plastic Shed base, Here's how!
Plastic Shed base fi
Save Money and Time Building a Plastic Shed Base, Here's How! Who’s ready to learn how to build a plastic shed base? Let’s start by telling you all the... read more ❯
It's All About the Base! No Wood!
All About The Base FI
How to Stop Your Shed Bases Rotting Over Time It’s that time of year again when everyone is out in the garden, planting flowers and mowing the lawn. You... read more ❯
The Perfect Base For A Greenhouse
Greenhouse Base Featured Image
Building A Base for Your Greenhouse Is as Easy as One, Two Three! Maybe not the time of year you would think of building a greenhouse, however, many plants... read more ❯
Plastic Shed Bases - Bases That Are Making A Stand
Plastic Shed Bases Featured Image
Traditional Methods Are Not Always the Best Methods - Try A Plastic Shed Base Plastic Shed Bases are made from plastic which means they are stronger, more resilient, more... read more ❯
Deal of the DayWe've dropped the price on this product, but only for 24 hours!

Keter Storage Box - Rockwood 570L Brown


The Keter Rockwood is a stunning brown storage box that provides you with an attractive, functional, safe and long-la... Read more

Add to Cart