Sud Permeable Driveways
Having a proper SUD permeable driveway ensures water does not run out of your property and a smooth transition into a local sewer.

In the past, most areas in the United Kingdom were badly affected by the ravaging impact of flood. The blame was wholly placed on the lack of preparation of homeowners and increased construction in urban and suburban areas leading to lack of rainwater absorption. However, rainwater is diverted into surface water drainage systems as they cannot penetrate impermeable surfaces thereby causing floods.

Based on findings, homeowners in the last two decades have covered beds and garden grass with hard landscaping and that has caused this anomaly. The building engineers in the UK, in a bid to salvage the situation have been working to provide more feasible alternative to serve as a replacement for the conventional drainage techniques. In this article, we will discuss facts about SUD permeable driveways.

SUDs, often known as Sustainable Drainage System can be defined as an efficient drainage of surface water and a systematic way of eliminating pollution of the environment while reducing the effect on local drainage services. SUDs entail the use of building materials, new development design and management procedures.

Legislation was put in place to check the effect of heavy downpour and steady erosion of natural habitats meant to minimize flooding during the rainy season. The emergence of paved areas has helped in the natural absorption of storm water into the water table, and ensured a smooth flow.

Having a proper SUD permeable driveway ensures water does not run out of your property and a smooth transition into a local sewer.


SUDs serve as a reliable alternative to conventional piped water drainage systems that have been in existence in the United Kingdom for years. They have been gaining widespread acceptance in the industry for quite some time now. The sole purpose of SUDs is to imitate natural systems, ensuring a free flow of dirty and surface water through the surface, driveway or a walkway into the ground. Permeable paving ensures the reduction of flood risk expenses in an efficient manner, and ensures a beautiful hard standing of the entire surface.

Most people often ask if they need planning permission for a driveway created from permeable paving. The answer is NO. There is no need to seek planning permission for this type of driveway installation on the front garden as it is environmental-friendly. These are some of the requirements that exempt you from applying for driveway planning permission:

  • Driveways with porous surfacing such as permeable block paving or porous asphalt are exempted.
  • You are exempted if your non-permeable driveway has a rainwater run-off into a permeable location such as lawn or border.
  • You can be exempted if the measurement of your driveway is less than 5m2.

On the other hand, your site may need to apply for driveway planning permission if you have the following:

  • If the measurement of your driveway is above 5m2.
  • If your driveway does not have a rainwater run-off on to a penetrable surface.
  • If you have a driveway at your property that requires a drop kerb for proper access.
  • If you want to use a non-permeable material for your driveway.

Permeable paving requires different foundation to conventional block paving. However, it is crucial for you to engage the service of an expert to examine the permeability of the soil to ensure the calculation of the foundation’s depth to ensure it withstands rainfall impact. In most cases, the foundations of permeable paving are 200 mm depth of 20mm clean crushed stone and 50mm laying course depth of 6mm clean crushed stone.

These are the benefits of using Permeable Pavers:

  • It enhances road tree survival
  • It reduces the high-temperature island effect and thermal loading on surrounding surface waters.
  • It reduces polluted runoff from rainwater and eliminates the chances of flooding.
  • Ensures the reduction of expenses on drainage and maintenance systems.
  • Enhances groundwater capacity
  • Ensures efficient management of storm sewer systems.
  • Enables water to soak into the ground properly.
  • It slows the water down before entering natural watercourses and provides areas to save water for evaporation.