Environmental Benefits of Resin Bound Gravel Surfacing Over Tarmacadam, Block Paving, and Concrete

1. Permeability & Drainage

- Resin bound gravel is fully permeable, allowing rainwater to drain naturally through the surface.

- This reduces surface water runoff, helps prevent localised flooding, and supports sustainable drainage systems (SuDS).

- Tarmacadam, concrete, and most block paving are generally impermeable, contributing to increased runoff and potential drainage issues unless special measures are taken.

2. Reduced Urban Heat Island Effect

- The light, natural appearance of resin bound gravel reflects more sunlight and absorbs less heat than darker tarmac surfaces, helping to keep local areas cooler.

- Concrete and tarmacadam can absorb and retain heat, contributing to urban heat islands.

3. Use of Recycled Materials

- Many resin bound systems incorporate recycled aggregates (such as glass or rubber), reducing the demand for virgin materials and supporting circular economy principles.

- Traditional block paving, tarmacadam, and concrete typically rely on quarried or processed materials with higher environmental footprints.

4. Lower Energy Consumption in Installation

- Resin bound gravel can often be installed directly over existing surfaces, reducing the need for energy-intensive excavation and heavy machinery.

- Tarmacadam and concrete installations usually require more extensive groundwork and machinery, increasing energy use and emissions.

5. Reduced Chemical Runoff

- The permeability of resin bound gravel helps filter pollutants from rainwater before it enters groundwater or drainage systems.

- Impermeable surfaces like tarmac and concrete can increase the risk of oil, fuel, and other chemicals washing directly into drains and waterways.

6. Longevity and Low Maintenance

- Resin bound gravel is durable, resistant to cracking, and requires minimal maintenance, which reduces the frequency of repairs and associated resource use.

- Block paving can shift or become uneven, and tarmac may crack or degrade, potentially requiring more frequent repairs.

7. Aesthetics and Biodiversity

- The natural stone finish of resin bound gravel can blend better with green spaces and support more sympathetic landscaping.

- It’s less disruptive to local biodiversity than large expanses of hard, reflective concrete or tarmacadam.