Modern construction projects increasingly focus on long-term environmental performance and drainage efficiency. From public parks to new housing developments, managing rainwater runoff is a key design requirement. SUDS Bond permeable surfacing offers a simple, reliable way to achieve this goal while maintaining attractive, hard-wearing pathways and play areas.
SUDS Bond, supplied and installed by Abacus Playgrounds, is designed to combine the strength of resin-bound systems with high levels of permeability. It helps projects meet Sustainable Urban Drainage System (SuDS) standards and supports the creation of cleaner, safer, and more resilient outdoor spaces.
SUDS Bond is a permeable resin-bound surfacing made from recycled aggregates and specialist resin. It allows rainwater to pass through its surface, reducing puddles, supporting SuDS compliance, and preventing surface water runoff. The result is a smooth, durable, and environmentally friendly surface suitable for car parks, footpaths, and playgrounds.
What Is SUDS Bond Surfacing?
SUDS Bond Surfacing is a type of resin-bound surfacing designed specifically to manage surface water. It uses a carefully mixed blend of resin and open-grade aggregates to create a continuous, porous surface. This structure allows water to naturally filter through to the ground, imitating the way rainwater would drain in natural soil conditions.
Unlike conventional paving or tarmac, which can create runoff and pooling, SUDS Bond supports the principles of sustainable urban drainage by reducing pressure on local drainage networks.
Why Sustainable Drainage Matters
Urban development has increased the amount of hard surfacing across towns and cities. This limits the amount of rainwater that can soak into the ground, causing runoff that contributes to local flooding.
The UK’s Sustainable Urban Drainage Systems (SuDS) initiative encourages developments to integrate permeable materials and natural drainage features to manage surface water safely. Using permeable surfacing such as SUDS Bond is one of the simplest ways to meet these requirements without compromising design or functionality.
How SUDS Bond Works
SUDS Bond achieves permeability through its structure. The surface is made up of graded aggregates bound together with resin, leaving small voids between particles that allow water to drain through. The performance depends on both the aggregate grading and the sub-base design beneath it.
When correctly installed, water passes vertically through the surface and into the base, where it either infiltrates the soil or is directed to a controlled drainage outlet. This natural filtration process helps remove pollutants and supports groundwater replenishment.
Key Benefits of SUDS Bond Surfacing
1. Excellent Drainage Performance
SUDS Bond allows water to filter through at a high rate, typically over 500 litres per square metre per hour. This helps prevent standing water, puddles, and surface flooding, keeping outdoor spaces safe and usable in all weather conditions.
2. Durable and Hard-Wearing
Although porous, SUDS Bond is exceptionally strong. It forms a solid, bonded surface suitable for both pedestrian and light vehicle traffic. When laid on a stable base, it provides long-lasting performance with minimal maintenance.
3. Low Maintenance Requirements
Because SUDS Bond does not trap water on the surface, it reduces the growth of moss and algae. Routine cleaning with a low-pressure washer or broom is usually all that is needed to keep it looking new.
4. Environmentally Responsible
The system supports sustainable drainage principles and can incorporate recycled aggregates, helping projects meet environmental targets. The porous design also improves air and water exchange within the ground, supporting vegetation and biodiversity around the installation.
5. Visually Appealing and Versatile
SUDS Bond can be finished in a range of aggregate colours and sizes, allowing designers to match the surface to its surroundings. The smooth, natural look complements both modern and traditional architecture.
Where SUDS Bond Can Be Used
SUDS Bond is a versatile surfacing option that suits many project types.
| Application | Benefits |
| Car Parks and Driveways | Handles vehicle load while remaining permeable |
| Footpaths and Cycle Routes | Provides a smooth, slip-resistant surface |
| Public Parks and Playgrounds | Manages surface water and improves safety |
| Housing Developments | Supports SuDS compliance and planning approval |
| Visitor Attractions | Offers decorative, low-maintenance surfacing |
By combining strength and permeability, SUDS Bond can be integrated into most exterior design schemes that require reliable drainage and visual appeal.
Specification Overview
| Specification Item | Typical Range or Requirement |
| Resin Type | Two-part polyurethane binder |
| Aggregate Size | 1–6 mm, open-graded |
| Surface Thickness | 15–25 mm |
| Permeability | Typically 500–850 litres/m²/hour |
| Slip Resistance | 55–70 PTV (wet) |
| Base Type | Open textured asphalt or permeable concrete |
| Lifespan | 10–15 years with minimal maintenance |
Abacus Playgrounds installs SUDS Bond to exact specifications that ensure long-term performance and compliance with SuDS standards.
Installation Process
Installing SUDS Bond requires preparation, precision, and a stable sub-base. The process generally includes the following steps:
- Base Preparation
The sub-base is constructed using permeable asphalt, MOT Type 3, or another open-graded material. The surface is levelled and compacted to allow free drainage. - Mixing the Resin and Aggregates
The resin and aggregates are blended in a forced-action mixer, ensuring every particle is evenly coated. - Application and Levelling
The mixture is poured onto the prepared base and spread using trowels to achieve the required depth. - Curing
The surface is left to cure for several hours, creating a strong, seamless, and permeable finish.
Once cured, the surface can be opened to pedestrian traffic within 4 to 6 hours, depending on site conditions.
Sub-Base Requirements
The performance of SUDS Bond depends on an appropriate sub-base design.
| Sub-base Type | Characteristics | Suitability |
| Open Textured Asphalt | Fully permeable and load-bearing | Ideal for car parks and footpaths |
| MOT Type 3 Stone | Free-draining and stable | Suitable for landscaping and park pathways |
| Porous Concrete | Strong and permeable | Used for courtyards or driveways |
| Existing Base (with drainage) | Must be structurally sound and clean | Suitable for refurbishment projects |
A geotextile membrane may be used beneath the base to prevent weed growth and maintain drainage capacity.
SUDS Bond vs Other Resin Surfaces
| Surface Type | Permeability | Best For | Maintenance Level |
| SUDS Bond | High | Public walkways, and housing sites | Low |
| Resin Bound Gravel | High | Decorative pathways, landscaped areas | Low |
| Resin Bonded Gravel | Low | Decorative entrances, courtyards | Moderate |
| Wet Pour Surfacing | High | Playgrounds and safety zones | Low |
Each material has distinct strengths. SUDS Bond stands out for combining structural strength with permeability, making it particularly useful for large external areas where both function and compliance matter.
Design Considerations
When specifying SUDS Bond for a project, consider the following:
- Intended Use: Determine whether the surface will support vehicles or pedestrians. This influences the required base strength and surface thickness.
- Gradient and Drainage: Even permeable surfaces perform best on gentle gradients to promote even infiltration.
- Edge Restraints: Install suitable edging to prevent lateral spread and preserve the clean finish.
- Colour Selection: Choose aggregate tones that complement the surrounding materials and architecture.
- Maintenance Access: Plan for easy access to inspect or clean the surface when needed.
Abacus Playgrounds provides technical drawings and specification support to assist architects and developers in integrating SUDS Bond effectively into project plans.
Maintenance and Longevity
SUDS Bond Surfacing requires very little maintenance once installed. Occasional sweeping and gentle washing are enough to keep the surface clear of debris. Avoiding the build-up of organic matter, such as leave,s helps maintain permeability and appearance.
With proper care, SUDS Bond surfacing can remain in excellent condition for more than a decade, providing a long-term return on investment for councils and developers.
Sustainability and Compliance
SUDS Bond directly contributes to sustainable drainage strategies required under many UK planning conditions. By reducing surface water runoff and improving filtration, it helps developments meet local authority and Environment Agency expectations for SuDS performance.
The system can also incorporate recycled aggregates, reducing demand for virgin materials and supporting circular economy principles in construction.
Abacus Playgrounds can provide documentation and test data to confirm compliance where required.
Frequently Asked Questions
1. What does SUDS stand for?
SUDS stands for Sustainable Urban Drainage Systems. It refers to methods used to manage rainwater runoff in urban environments in a natural and sustainable way.
2. Is SUDS Bond suitable for vehicle areas?
Yes. When installed on an appropriate sub-base, SUDS Bond can support light vehicles such as those used in car parks or service roads.
3. How long does it take to install?
Installation time varies depending on site size. Most pedestrian areas can be completed within one to two days, including curing.
4. Does SUDS Bond need special cleaning?
No. Simple brushing or low-pressure washing is usually sufficient. This prevents clogging and maintains permeability.
5. Can it be installed over existing tarmac?
Only if the base allows drainage. Non-permeable surfaces should be perforated or replaced to ensure compliance.
6. What colours are available?
SUDS Bond can be supplied in natural stone shades such as buff, beige, silver, and granite. Custom blends can be arranged on request.
7. How is it different from resin-bound gravel?
SUDS Bond uses a coarser, more open aggregate mix that enhances permeability. It is often specified for larger areas or car parks requiring higher water flow capacity.
8. What is the lifespan of SUDS Bond?
Typically, 10 to 15 years, depending on traffic levels and maintenance.
How Abacus Playgrounds Supports Developers and Councils
Abacus Playgrounds provides specialist installation services and technical support for all permeable surfacing systems. With over 30 years of experience, our team works across the UK to deliver solutions that meet design, safety, and sustainability objectives.
We supply and install SUDS Bond, Resin Bound Gravel, Wet Pour Surfacing, and MulchBond Rubber Surfacing for schools, councils, contractors, and housing developers.
Our team provides clear guidance from specification to installation, ensuring every surface performs to the highest standards.
SUDS Bond permeable surfacing offers an efficient and attractive way to manage rainwater within modern developments. It supports sustainable design principles while providing a strong, durable surface suitable for a wide range of uses.
For architects, contractors, and councils seeking to combine performance with compliance, SUDS Bond represents a dependable solution that contributes to safer and more sustainable outdoor environments.
Abacus Playgrounds installs SUDS Bond surfacing nationwide. Contact our team for advice, specification details, or a quotation for your next project.