What is SUDS Compliance?
What is SUDS?
SUDS is the Sustainable Urban Drainage System. Urbanisation and climate change have led to increased flood risk. To tackle this, all new driveways have to comply with SUDS regulations to better manage urban surface runoff.
The Environment Agency strongly encourage Resin Bound surfaces to help tackle the growing threat of flooding in many areas. This is why it's especially ideal for parks, large drives, paths and playgrounds.
SUDS is one of the reasons Resin Bound systems have become increasingly popular; they are designed to be permeable and can be used in accordance with SUDS building regulations.
Is a Resin Bound system SUDS compliant?
Yes, your Resin Bound surface is SUDS compliant. To provide a complete SUDS system, the product requires a porous base. This can be a special concrete or open textured Bitmac on top of a type 3 stone.
A Resin Bound surface can handle 850 litres of water per square metre per minute. The system can also be laid directly on top of old Bitmac or concrete, but it will require a suitable soakaway or drainage flow. The existing surface must also be sound and free of cracks.
Is a Resin Bonded system SUDS compliant?
The Resin Bonded Aggregate is a different system where the resin is applied directly onto a suitable hard surface, usually Bitmac or concrete. A primer is usually used, and the resin is applied by a roller, followed by the aggregate, which is broadcast onto the surface. This creates a natural looking stone, but is not SUDS compliant.
What does the UK Government say?
You will not need planning permission if a new or replacement driveway of any size 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."
If the surface to be covered is more than five square metres planning permission will be needed for laying traditional, impermeable driveways that do not provide for the water to run to a permeable area”
- UKGOV Planning Portal