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Ecobase Fastfit Foundation Base

Crafted from recycled plastic, the Ecobase shed base stands as an eco-conscious alternative to traditional flags or wet concrete mix for garden building foundations. It features innovative self-fastening connectors for easy assembly and is reusable. Designed to be filled with gravel for a French drain effect, this foundation grid system simplifies the process of creating a stable and sustainable base for any garden structure, ensuring quick installation.

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  • Made from recycled plastic
  • An alternative to using flags or wet concrete mix
  • Self fastening connectors
  • Reusable
  • Can be filled with gravel to produce a French drain
Overall Dimensions (Includes Roof Overhang)

Why Buy The Ecobase Fastfit Foundation Base?

Easy Assembly
Easy Assembly

Put together in no time.


Made from recycled plastic.

Sturdy Foundation
Sturdy Foundation

Provide a solid base to buildings.


Even if you change your garden building.

Key Features

Easily Filled

Fill with pea gravel or stones 10mm in diameter.

Prevent Rising Damp

Turn into a French drain to prevent pooling groundwater.


Get a foundation down sooner rather than later - one that's built to last!

Key features

Get fast and free* delivery to most of mainland UK.

Track Your Order

You can track your order from your online account.

Frequently Asked Questions


We offer a pay by finance option on any purchase over the value of £560. Read more about our Pay by Finance option here.

Products are delivered in boxes that will easily fit through doorways and entranceways, ready for easy assembly.

Your order can be tracked through the account section on our website or by contacting us directly. You will be contacted after your order by our helpful care team to arrange delivery of your building.

Yes! All our products that require assembly come with a digital instruction booklet, which will be emailed to you to read through before your order is delivered! Instructions can also be downloaded from your online login.

More about the Ecobase Fastfit foundation...

If you've just bought, or are looking to buy a garden building we recommend considering your base options. These may be using pavings, timber bearers, pouring a concrete slab or, using this Fastfit base for a hassle-free, money-conscious foundation.

Garden building base kit

A plastic shed base that isn't just suitable for plastic sheds. This cost-effective and lasting base is suitable for garden sheds, potting sheds, bike stores, log stores and more.


With the Ecobase there's no assembly service required - you can easily fit it together yourself. Our base grid systems can be laid out on level ground over the weed membrane and simply clicked together in sections. Your order will be provided with comprehensive assembly instructions to make this process as smooth as possible.

Fill with pea gravel or similar

With none of the potential concerns associated with wood bearers (risk of rot) or a solid slab of concrete (rising damp), the Ecobase is a fantastic alternative. It comes fitted with a weed-resistant membrane to prevent plant growth and should be filled with gravel (such as pea gravel) that's at least 10mm in diameter.


The ecobase shed base is a smart foundation grid system for use as a base for garden buildings. Get fast and free UK delivery* to most of the mainland with our super speedy delivery service. Just checkout today to see if you're eligible.

Features EcoBase 6x3 - 8 grids EcoBase 1.5 x 1.5m - 9 grids EcoBase 6x4 - 12 grids EcoBase 5x5, 6x6, 2 x 2m- 16 grids EcoBase 8x6, 7x5 - 20 grids EcoBase 7x8, 8x8, 7x7 - 25 grids EcoBase 10x6 - 28 grids EcoBase 9x8, 3.0 x 2.5m- 30 grids EcoBase 12x6 - 32 grids EcoBase 10x8 - 35 grids EcoBase - 9x9, 3 x 3m- 36 grids EcoBase 12x8 - 40 grids EcoBase 10x9, 3.5 x 3m - 42 grids EcoBase 14x8, 4.5 x 2.5m - 45 grids EcoBase 12x9, 4.5 x .25m - 48 grids EcoBase 10x10, 3.5 x 2.5 - 49 grids EcoBase16x8, 5.0 x 2.5m - 50 grids EcoBase 13x10, 12x10, 4.0 x 3.5m - 56 grids EcoBase 14x10 4.5 x 3.5m- 63 grids EcoBase 12x12, 4.0 x 4.0m - 64 grids EcoBase 16x10, 5.0 x 3.5m - 70 grids EcoBase 13x13, 4.5 x 4.5m - 81 grids EcoBase 18x13 5.5 x 4.0m - 88 grids EcoBase 20x10 - 91 grids EcoBase 16.5x13 , 5.5 x 4.5m - 99 grids
Weight 11.200kg 12.600kg 168kg 22.400kg 28kg 35kg 39.200kg 42kg 44.800kg 49kg 50.400kg 56kg 58.800kg 63kg 67.200kg 68.600kg 70kg 78.400kg 88.200kg 89.600kg 98kg 113.400kg 123.200kg 127.400kg 138.600kg
Please Note: All products supplied self assembly flat packed unless otherwise stated.