What is SUDS Compliance? Understanding Sustainable Drainage Systems

What is SUDS Compliance?

SUDS is the abbreviation for Sustainable Urban Drainage Systems. Being SUDS compliant means that the product (in this case our resin driveways) has the aim to manage surface water and prevent local flooding. Resin driveways do this as they are permeable, allowing for water to drain through as naturally as it would in soil. From 2024, SUDS compliancy will be mandatory for most new construction in England, showing how important it’s viewed as by regulating bodies. Therefore, it would be a great way for homeowners to improve their homes – visually and practically.

SUDS as an overall category covers any adaption to a built-up area that will positively impact the area in terms of sustainability, this could include green roofs, permeable paving, and swales. The primary goals are to manage the surface water runoff which reduces the risk of flooding, controlling water pollution.

Is SUDS a Legal Requirement in the UK?

Currently, as of October 2024, SUDS are not a legal requirement for private residential owners but is required to be included in plans for new developments. Some governments in the past have even given grants to encourage homeowners to change their driveways, therefore it is not mandatory for private owners but a highly recommended step for their home, and potentially it’s future value.

The Role of SUDS in Managing Water Runoff

When surfaces are permeable, it allows for the mimicking of natural processes to allow water absorption. This also prevents harmful substances from entering bodies of water, by having it absorbed instead of being fed into a water storage system. The constant water absorption cycle also cools the surface in warmer months and reduces the amount of ice in cooler months.

The Types of SUDS

There are three main types of SUDS – source control, permeable surfaces and water storage. Source control are techniques that manage water at its source (eg. Rain gardens, green roofs). Permeable surfaces are what our Oltco surfaces come under, allowing water to drain. Water storage are systems designed to hold excess water temporarily (eg. Swales, ponds).

What Makes a Surface SUDS Compliant?

A permeable sub-base, such as open-textured Bitmac or type 3 stone, is required underneath to provide stability and drainage. Resin BOUND surfaces are SUDS compliant when laid on top of this permeable sub-base, whereas resin BONDED surfaces aren’t SUDS compliant because they don’t provide permeability and may cause water runoff.

Key SUDS Terminology: What You Need to Know

Permeability: The ability of a surface to allow water to pass through.

Swales: Shallow channels designed to manage water flow and reduce flooding.

Runoff: Water that flows over land instead of soaking into the ground.

Resin Bound: The resin and stone aggregates are mixed before being installed, creating a durable and smooth surface.

Resin Bonded: The loose stone aggregates are scattered on top of the resin once it’s already been installed.

Common Questions About SUDS

What Does SUDS Stand For?

SUDS stands for Sustainable Urban Drainage Systems.

Is SUDS a Legal Requirement?

It is not for private homeowners, but new developments from 2024 must include SUDS in plans.

What is the Purpose of SUDS?

SUDS helps manage surface water, reduce flooding risks, and control pollution.

What Are the Main Types of SUDS?

The main types of SUDS are: source control, permeable surfaces, and water storage systems.

Are Resin Bound Systems SUDS Compliant?

Resin bound systems are compliant with SUDS regulations when laid on appropriate bases.

Are Resin Bonded Systems SUDS Compliant?

Resin bonded systems do not meet SUDS requirements due to lack of permeability.

How SUDS Compliant Surfaces Can Improve Your Property

SUDS compliant surfaces like resin bound driveways can enhance property value, prevent flooding, and support sustainability efforts. They are not only eco-friendly but also add aesthetic and functional benefits to properties.

Contact Oltco today to explore SUDS compliant options for your driveway or paving project.