In October 2008 Permitted Development Rights were introduced for householders wishing to pave over their front gardens. This enforces that if the surface to be covered is more than 5m2, planning permission will be needed for laying traditional, impermeable driveways that do not control rainwater running off onto roads. Planning permission is not needed if a new driveway uses permeable (or porous) surfacing, which allows water to drain through, such as gravel, permeable concrete block paving or porous asphalt, or if the rainwater is directed to a lawn or border to drain naturally.
You can use permeable or porous paving as a source control measure for small roads, pavements, car parks and yards driveways paths or patios. Source control measures are sustainable urban drainage systems (SUDS) that deal with run-off at, or close to, the surface where rainfall lands.
Choosing Resin Bound Paving allows Rain to pass through the surface, either through the permeable material such as gravel or porous asphalt, trapping pollutants below. Once there, many pollutants are broken down by natural processes.
By using Resin Bound Permeable Paving you can also prevent water pooling on impermeable surfaces, avoiding puddles and ice on car parks. Large amounts of water can be stored temporarily under the surface. This reduces the chances of flooding.
The need for alternative drainage such as SuDS is likely to increase to meet environmental challenges such as climate change and population growth. Provision for SuDS and the national standards required for their design, construction, maintenance and operation is included in the Flood and Water Management Act 2010.