At Commercial Roof, we specialise in brown roof installations and across the UK, helping businesses and property developers create eco-friendly, biodiverse roofing solutions.
Our brown roofs support urban wildlife, improve rainwater absorption, and contribute to sustainability targets.
Whether you are developing a commercial property, an industrial site, or an urban regeneration project, our expert team ensures a durable, structurally sound, and environmentally beneficial roof.
Book a free site consultation and tailored quote with our experts today.
What Are the Benefits of a Brown Roof?
Brown roofs enhance biodiversity by attracting local plants, insects, and bird species in , contributing to urban greening and habitat restoration. The natural soil substrate absorbs rainwater, reducing runoff and flooding risks in , while also helping to regulate urban temperatures.
Unlike traditional green roofs, brown roofs require minimal maintenance in , as the vegetation develops naturally over time. Additionally, these systems help improve air quality, provide aesthetic value, and align with environmental regulations in , making them ideal for sustainable building projects.
What Components Make Up a Brown Roof?
Brown roof include waterproofing and root barrier, drainage and retention layer, soil substrate, natural seed dispersal, and biodiversity features to support ecological balance.
These features have the following characteristics:
Waterproofing membrane and root barrier – Protects the building from water infiltration and root damage.
Drainage and water retention layer – Maintains proper moisture balance and prevents waterlogging.
Recycled or natural soil substrate – Supports native vegetation without artificial landscaping.
Natural seed dispersal in – Allows plants to colonise organically over time.
Biodiversity features – Includes logs, sand patches, and stones to attract pollinators, birds, and insects.
What is the Brown Roof Installation Process?
The installation of a brown roof involves a structural assessment in to evaluate load-bearing capacity, ensuring the roof can support soil, water, and vegetation. Next, a waterproof membrane and drainage layer are installed in to prevent leaks and excess water retention.
A specialist soil substrate is then added in , forming the base for natural plant colonisation. To encourage wildlife and biodiversity, features such as logs, rocks, and sand patches are strategically placed in .
Over time, local plants and wildlife establish naturally in , requiring minimal intervention. A final inspection and ongoing ecological monitoring in ensure that the brown roof continues to function effectively.
How Much Does a Brown Roof Cost?
A brown roof installation can cost between £60 and £150 per square metre in , depending on substrate depth, drainage complexity, and biodiversity features.
Additional expenses may include specialist soil substrates, waterproofing membranes, retention layers, and ongoing ecological monitoring in . While initial installation costs may be higher than traditional roofing, brown roofs offer long-term environmental and financial benefits through reduced stormwater drainage fees, improved insulation, and compliance with sustainability regulations.
Contact Commercial Roof in to get customised pricing for a brown roof installation and maintenance job.
How Long Does a Brown Roof Last?
Brown roofs have a lifespan of 40–50+ years, depending on substrate depth, structural support, and biodiversity management in .
Ensuring proper drainage, ecological monitoring, and minimal disturbance in will help extend the lifespan of the system. Regular inspections can help prevent structural issues in , ensuring the roof remains functional and effective.
Do You Need a Permit for a Brown Roof?
Brown roof installations require planning permission, particularly for commercial developments and conservation areas in . Local authorities often support biodiversity initiatives in , and brown roofs can help meet sustainability targets and environmental compliance.
Permits may be required to ensure that the roof structure meets load-bearing regulations in , as well as for stormwater management integration.
Our team at Commercial Roof can assist with planning applications and compliance with building regulations, ensuring a smooth approval process.
Contact us in to get further details on the brown roof installation and maintenance plan.