Drainage
The external spaces of any development – from car parks and pathways to boundary walls and drainage systems – form the critical interface between buildings and their environment.
Our expertise spans all aspects of hard landscaping and water management. For hardstanding surfaces, we construct durable, high-performance solutions including block-paved driveways, tarmacadam car parks, and resin-bound pedestrian walkways. Each is designed with integrated falls and gradients to ensure effective surface water runoff, preventing pooling and ice formation in winter months. We pay particular attention to material selection, using premium aggregates and binding materials that withstand heavy traffic while maintaining their appearance over time.
Boundary treatments form another key element of our externals work. Our retaining walls and perimeter structures are engineered for long-term stability, incorporating features such as weep holes and proper backfill to prevent water pressure build-up. Where visual impact matters, we offer a range of facing materials from traditional brick and stone to contemporary rendered finishes, seamlessly blending practical engineering with architectural vision.
Drainage forms the hidden but essential backbone of all external works. Our team designs and installs complete foul and surface water systems, from simple yard gullies to complex adoptable drainage networks complying with Section 38 and Section 104 standards. We incorporate sustainable drainage solutions (SuDS) where appropriate, including permeable paving, attenuation tanks and swales to manage runoff naturally.
Every project benefits from our rigorous quality control processes, including CCTV drainage surveys and pressure testing to guarantee system integrity. With MAC Group Ltd, you gain a partner committed to delivering externals and drainage solutions that stand the test of time – combining robust construction with intelligent design to create spaces that work as hard as they look good.
Key features of our service:
-
Complete design and installation of hardstanding surfaces
-
Engineered boundary walls and retaining structures
-
Fully compliant foul and surface water drainage
-
Sustainable drainage solutions (SuDS) integration
-
Quality assurance through comprehensive testing
-
Adoption-ready systems for public realm projects


