A strong, permeable and weather resistant recycled plastic gravel grid

GP40 is a fantastic gravel grid which can be used in a variety of ways as an effective paving and surfacing solution. It carries a range of benefits such as: being strong (able to hold up to 250 tonnes per sqm), fully permeable, easy to install, rot-free and weatherproof. The unique design of the GP40 gravel driveway grid gives it a great load-bearing capacity and good permeability all whilst being easy to handle and install.

  • Product Dimensions: 1000mm x 1000mm
  • Depth: 40mm
  • Colour: Black
  • Weight: 5.40kg
  • Load Capacity: 250 Tonnes
  • Individual Panel Size: 500mm x 500mm
  • Panels Per m2: 4 Panels
  • Made From: Recycled Plastic
  • Max Gradient: 9%
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This product is usually delivered within 3-5 days

£14.00 inc VAT

£11.67 +VAT

705 in stock

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About GP40

Manufactured from recycled polyethylene and moulded into shape, GP40 gravel grid is most commonly used to create DIY gravel driveways, garden bases, car parks, access routes and more. The grids versatility is what makes it such a popular ground reinforcement grid. Due to its unique design and formulation of plastic each GP40 panel can withstand up 250 tonnes per m2, is weatherproof and rot-resistant so will not break down over time. The open structure makes the grid permeable and SuDs compliant meaning rain and other liquids can naturally drain into the ground below to reduce surface water build-up and lessen the chances of flooding. Whilst being effective, GP40 grids are also easy to install thanks to their lightweight frame and slot and T bar connection system, one person can easily manoeuver and install their areas.

Additional information

Weight 5.4 kg
Dimensions 1000 × 1000 × 40 mm
Pack Size


Suitable for

Pedestrians/Animals, Light Foot Traffic, Light Vehicles, Medium Foot Traffic, Medium/Heavy Vehicles, Heavy Foot Traffic




What is GP40 suitable for?

GP40 panels can hold up to 250 tonnes per square meter. They are suitable for driveways, pathways, car parks, equestrian areas, golf courses and more. Please contact us on live chat if you are unsure.

How many GP40 panels make up 1m²?

GP40 panels are 50cm x 50cm. So 4 panels are connected together to make 1m² (nominal).

Will GP40 be strong enough to support my car?

GP40 can hold up to 250 tonnes per square meter unfilled so is able to support vehicles.

Does GP40 help with flooding?

GP40 is a permeable product which means it allows water to drain naturally away into the ground below when installed correctly. This in turn helps to reduce surface water build-up and the chances of localised flooding.

Does this product come with pins or membrane?

No, this particular product does not come with either pins or membrane.

Which membrane should I use?

We recommend using a woven membrane with GP40

Can I cut GP40 panels?

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

Do I need pegs to secure GP40?

Only areas which have a gradient over 9% will require pegs.

Can GP40 be stacked on top of each other?

No, it was not designed for to be stacked when installed.

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

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

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.

What sub-base do I need under GP40?

We recommend you prepare the ground below your GP40 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 MOT type 1 or type 3?

Compact hard base, MOT type 1 is much finer and can over time become less permeable while the compact hard base, MOT type 3 is larger and more permeable.

Does GP40 allow grass to grow in its cells?

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

Can I put GP40 straight onto grass or soil?

We recommend not installing directly onto grass or soil but instead install onto a compact sub-base or similar 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 GP40.

How much is delivery?

Delivery is £10 for any quantity of grid, bases, mats, tiles and accessories.

How quick is shipping?

We typically endeavour your product to be delivered within 3-5 working days but the expected delivery time of your purchase will be displayed clearly at checkout.

How are the products packaged?

We take great care when packaging your order to ensure that our products reach you in the best possible condition. In addition, we are always trying to be more sustainably friendly therefore try to minimize the amount of plastic packaging we use around our products and use recycled packaging.

Spec Sheet

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