PP40 | Permeable Paving Grids | 1sqm

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SKU 430653-433777
Weight 3.39kg-3.55kg
Thickness 40mm
Size 1 sqm
Colour Green, Black
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Features and benefits

  • Strong gravel grids specially designed to provide hard-wearing ground reinforcement
  • Provides over 350 tonnes of support per m² when used in conjunction with an angular gravel or grass
  • Sold per square metre (made up of four 500mm x 500mm grids) for fast and easy install, interlocking to form a single robust surface
  • Depth of 40mm and 25mm ground spike allowing for the movement of to help resist lateral forces caused by larger vehicles
  • Manufactured from 100% recycled plastics which have been UV-stabilised
  • SuDs compliant meaning no additional drainage is required for most installations, unlike tarmac, concrete or block paving alternatives
  • Paver profile that allows use in most weather conditions - they can expand on warmer days or in direct sunlight to stop lifting
  • Unique open cell structure allowing unrestricted healthy grass root growth or effectively retained gravel
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Full specification

More Information
SKU 430653-433777
Weight 3.39kg-3.55kg
Thickness 40mm
Size 1 sqm
Colour Green, Black
Cell Dimension 57mm - Hexagonal
Fittings Integral Spikes/Edge Clip Connectors
Load Capacity 350 Tonnes per sqm
Grid Size 500mm x 500mm
Material Recycled polyethylene
Depth 40mm

Further information

These strong PP40 permeable pavers, also known as gravel grids or grass grids, are used where a permeable ground stabilisation solution is required for applications including driveways, car parks, overflow parking, car parking bays, cycle paths, pedestrian footpaths and wheelchair access paths.  PP40 gravel grids are our flagship pavers in our permeable paving range due to their strength and easy-to-install nature, providing over 350 tonnes of support per square metre, making it a favourite whether you are installing a commercial car park or domestic driveway.

PP40 permeable pavers can be filled with either gravel or grass to provide a free-draining hardwearing surface that is SuDs (Sustainable Urban Drainage System) source control compliant.  Moreover, the plastic grids have a unique open cell structure that is ideal for allowing grass roots to spread from cell to cell, allowing a vertical and horizontal passage of water, drainage and aflow of nutrients.  These benefits provide a great grass growing environment with the ground stabilisation qualities adding strength and integrity to the grass structure.  This structure also ensures that angular gravel is interlocked firmly within the cells so that it is retained in situ and won't move or be lost during vehicle movements. Please note that rounded pea shingle is not advised for this reason, but sharp, angular gravel is recommended instead, such as our golden flint gravel, red granite chippings, white chippings or cream Cotswold chippings.

Each paver has the added benefit of a 25mm ground spike which helps resist lateral movement caused by repetitive traffic motion. PP40 porous pavers provide ground stabilisation for either grass or gravel with the structural integrity that is required to cope with pedestrians, cars, vans, trucks up to 7.5T, and emergency vehicles. 


  • Overflow grass car parks/gravel car parks
  • Grass or gravel driveways
  • Emergency vehicle lanes or fire engine / ambulance access roads
  • Helipads or light aircraft taxiways
  • Pedestrian paths and garden paths
  • Cycle tracks and paths
  • Wheelchair/disabled access routes (DDA compliant)
  • Golf buggy / trolley paths
  • Caravan / Motorhome bays / access routes
  • SuDS source control schemes

Please note that with all installations of grass pavers, we strongly recommend that all areas should have sufficient drainage prior to the installation. Failure to ensure this may result in the product not performing as intended.

To see our full installation guidelines and specification sheets, please head to our technical area.

Technical information

Pavers per m²: Four

Compatible vehicle types: Bicycles, wheelchairs, golf carts, cars, caravans, transit vans, 3.5T and 7.5T vans and fire engines

Dimensions: 500mm x 500mm x 40mm (per paver) with additional 25mm spikes on the base

Weight: 1kg per individual piece (4kg per m²)

Colour: Black or green

UV-stabilised: Yes

Load-bearing capacity (filled): 350 tonnes per m², tested to UNI CEI EN ISO/ IEC 17025 Certification

Traffic loading: Tested to DIN 1072 (20-tonne wheel load SWL)

Product control: Tested to ISO 9000

Full specification: PP40 Product Data Sheet

Installation guide: PP40 Grass Finish or PP40 Gravel Finish

Design guidelinesPP40 Grass Finish or PP40 Gravel Finish