Ecomerchant FirmGround Reinforced Grass/Gravel Paver Range

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A range of simple easy to use reinforcing load bearing intelocking pavers to retain gravel or grass providing active drainage: made from recycled high density polyethylene.

Ecomerchant FirmGround gravel/grass paver is a modular unit which works in conjunction with its neighbouring units to create an exceptionally durable, permanently porous, high load bearing structure. Infilled with either grass or gravel the installed system recreates a nautural looking surface but can withstand traffic and pedestrians whilst providing active drainage and helping to prevent waterlogging.

Available in three strengths

  1. FirmGround 39 - for footpaths, occassional or infrequent use by lighter vehicles
  2. FirmGround 45 - for car parks, access roads cars, vans and occasional lorry traffic
  3. FirmGround 70 - for HGV access and high loadings

Available in black

Ecomerchant FirmGround is a key product within a sustainable urban drainage system (SUDS), whereby the porous paving effects the efficient attenuation, infiltration and treatment of stormwater run-off at or near its source. It is also an ideal product for grass and gravel reinforcement. 

Price is per m2 (there are 4 pavers per m2)

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Made in the UK

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Ecomerchant FirmGround comparison table
FirmGround  39 45 70

Compressive Strength (when filled with gravel)

<2000kN/m2

2000kN/m2

2400kN/m2

Nominal Size (±3%)

500 x 500 x 39mm

500 x 500 x 45mm

500 x 500 x 68mm

Coverage Rate

4 blocks / m2

4 blocks / m2

4 blocks / m2

Unit Weight

0.65kg

1.2kg

1.8kg

Infiltration Rate

>250cms/hr

>500cms/hr

>500cms/hr

Run Off Coefficient Range

0.05 – 0.4

0.05 – 0.25

0.05 – 0.25

Infill Surface Area

>92%

>90%

>90%

The Ecomerchant FirmGround grass/gravel paver is a versatile interlocking paving grid which can be used to recreate the natural surfaces of gravel or grass whilst providing the structural integrity necessary for trafficking

The Ecomerchant FirmGround paver is a key product within a sustainable urban drainage system (SUDS), where the porous paving affects the efficient attenuation, infiltration and treatment of stormwater run-off at or near its source. It is also an ideal product for grass and gravel reinforcement and for allowing temporary access or use.

What is it made from?

Made in the UK from recycled high density polyethylene, our FirmGround grass paver is a modular unit which works in conjunction with its neighbouring units to create an exceptionally durable, permanently porous, high load bearing structure. Infilled with either grass or natural aggregate in completed form, Ecomerchant Firm-Ground remains in harmony with current environmental considerations whilst complying with increased governing legislation.

This eco friendly product has many typical grass/gravel paver applications
  • Car parks
  • Pedestrian areas
  • Grass verges
  • Vehicular hard-standings
  • Cycle ways
  • Footpaths
  • Helicopter landing pads
  • Sport and leisure facilities
  • Holiday complexes
  • Sheltered accommodation
  • Domestic driveways
  • Caravan sites

Meet local councils requirements for all home car parking areas to be created with porous products with Ecomerchant FirmGround for your driveway.

At a Glance Guide to applications

Ecomerchant Firm Ground Comparison Table

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The Principle of SUDS

SUDS are physical structures built to receive surface water runoff, being located as close as possible to where the rainwater falls, providing the options of infiltration and attenuation stormwater source control solutions. Additionally they provide treatment for surface water using the natural processes of sedimentation, filtration, absorption and biological degradation.

Research shows that typically up to 80% of sediment; 60% of phosphorous and; 80% of nitrogen can be removed from rainwater through porous paving, together with substantial levels of heavy metals and hydrocarbons. This natural treatment provides the ideal opportunity for rainwater conservation and re-use for a variety of non-potable applications e.g. toilet/urinal flushing, irrigation, laundry, process water, vehicle washing, refrigeration, coolant use, etc.

Such source control principles and techniques, also called Best Management Practices (BMPs) are already forming part of planning controls in some areas and will become increasingly incorporated within new development projects.

FirmGround  39 45 70

Compressive Strength (when filled with gravel)

<2000kN/m2

2000kN/m2

2400kN/m2

Nominal Size (±3%)

500 x 500 x 39mm

500 x 500 x 45mm

500 x 500 x 68mm

Coverage Rate

4 blocks / m2

4 blocks / m2

4 blocks / m2

Unit Weight

0.65kg

1.2kg

1.8kg

Infiltration Rate

>250cms/hr

>500cms/hr

>500cms/hr

Run Off Coefficient Range

0.05 – 0.4

0.05 – 0.25

0.05 – 0.25

Infill Surface Area

>92%

>90%

>90%

The above data indicates typical values – comprehensive independent physical test data on the structural and hydraulic properties of the system is available on request.

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