Home/Brown Roof System

Brown Roof System

Brown roof systems, more commonly referred to as biodiverse roofs, have self-vegetated substrates where windblown and wildlife migrated seeds create the roof finish. The construction technique is principally the same as with green roof systems but with a different, thinner finishing surface. Rather than using separate components, IKO have created complete brown/biodiverse roof systems. These holistic roof systems combine compatible products to make installation easier and deliver exceptional performance. Biodiverse roof systems are popular within urban environments and are designed to replicate what has been removed from the area prior to construction.

Brown or biodiverse roof systems tend to be lighter and require less maintenance, care, and irrigation than other green roof systems. The system is usually specified on roof slopes of up to 35°, however, with careful design consideration, pitches above 35° can be achieved. This allows for greater freedom of design and can help support plans for urban greening in towns.

Brown or biodiverse roof systems offer a wonderful opportunity to recycle the excavated material from the construction site, and one that is often a criterion of the build. Care should be taken that this material is of appropriate quality to ensure water retention and suitability of medium growth to attract and support the local fauna and flora naturally. Brown or biodiverse roof systems make use of green roof substrates with higher organic content (minimum of 20%) to ensure that the specified wildflower plugs, or seeds, can flourish.

What are the benefits of brown/biodiverse roofs?

  • Aiding biodiversity by creating additional habitat for flora and fauna that is specific to the area and attracts wildlife and pollinators
  • Relatively lightweight due to application of a shallow substrate at varied depth (up to 150mm)
  • Improving the sustainable drainage capacity of the roof
  • The acoustic performance can be enhanced through the noise reduction the system can achieve
  • Reduction of heat island effect and improvement to air quality, especially in urban areas with a higher concentration of dust particles and gas pollutants
  • Heat insulation and protection for solar gain presents a potential for energy savings
  • The lifespan of the roof membrane is extended through protection from climatic changes and UV irradiation
  • Aesthetics of the building can be improved, and brown/biodiverse roof systems can serve as a positive selling point

Considerations for installation of brown/biodiverse roofs?

  • Maintenance requirements should be considered as brown/biodiverse roof systems do not allow for roof access
  • Any elements that may have sharp edges or points could damage the waterproofing membrane and must be avoided
  • Regulatory requirements
  • Wind uplift and weight loading
  • Irrigation requirements must be considered

IKO products are manufactured in the UK from responsibly, and where possible, locally sourced materials in order to reduce our carbon footprint and help with the sustainability of your project. The majority of our roofing systems are also BBA certified.

Why Choose IKO?
  • UK Manufacturer

  • All systems available

  • Family Owned

  • Technical Design Support

IKO Armourplan Cold Roof System

    Key Benefits to your project
    • Polymeric Single Ply PVC
      Zero Flame installation

    • Excellent mechanical properties and product performance

    • Excellent UV resistance and durability

    IKO Armourplan Inverted System

      Key Benefits to your project
      • Exceptional mechanical properties and product performance

      • Low maintenance lightweight system

      • High UV resistance and a long service life

      IKO Metatech Cold Roofing System

        Key Benefits to your project
        • Two-component: extremely fast installation and drying

        • Sustainable PMMA technology

        • Installation possible under poor weather conditions

        IKO Permaphalt

          Key Benefits to your project
          • Completely Seamless Waterproofing

          • Conforms to Carbon Zero Standards

          • BBA approved (Certificate No. 89/2299)

          IKO Permatec Anti-Root

            Key Benefits to your project
            • BBA Approved (Cert No.03/4009)

            • Environmentally friendly – made with recycled content

            • Less waste to control and dispose of – Zero waste packaging

            IKO Permatec Anti-Root System

              Key Benefits to your project
              • Hot Melt

              • BBA Approved (Cert No.03/4009)

              • Less waste to control and dispose of – Zero waste packaging

              IKO Permatec Podium System

                Key Benefits to your project
                • BBA Approved (Cert No.03/4009)

                • Environmentally friendly – made with recycled content

                • Less waste to control and dispose of – Zero waste packaging

                IKO Permatec System

                  Key Benefits to your project
                  • Hot Melt
                    Tough and resistant to impact damage thanks to its high tensile…

                  • Easily recyclable

                  • Excellent low temperature flexibility

                  IKO Polimar FCS (Fast Curing System) Waterproofing

                    Key Benefits to your project
                    • Cold Liquid
                      Completely Seamless Waterproofing with Vapour Resistivity. Fast Curing Liquid Roofing Waterproofing…

                    • Seamless and secure waterproofing of the most complex upstands with fleece reinforcement

                    • Highly flexible and crack-bridging even at extreme sub-zero temperatures

                    IKO Polimar Liquid Waterproofing System

                      Key Benefits to your project
                      • – Insert product Feature – Insert Benefit text here

                      • – Insert product Feature – Insert Benefit text here

                      • – Insert product Feature – Insert Benefit text here

                      IKO Roofgarden Hybrid System

                        Key Benefits to your project
                        • Bituminous Felts
                          Achieves FLL 4-Year Root Penetration Test

                        • Purpose made roof garden waterproofing cap sheet

                        • Specifically formulated ‘Anti-Root’ coating

                        IKO Roofgarden System Torch-On

                          Key Benefits to your project
                          • Bituminous Felts
                            Achieves FLL 4-Year Root Penetration Test

                          • Purpose made roof garden waterproofing cap sheet

                          • Specifically formulated ‘Anti-Root’ coating

                          IKO Roofstar Plus System

                            Key Benefits to your project
                            • Mastic Asphalt
                              Completely Seamless Waterproofing with Vapour Resistivity

                            • Complies with BS EN 12970:2000

                            • Enhanced Product Stability Across a Wide Temperature Range

                            IKO Roofstar System

                              Key Benefits to your project
                              • Mastic Asphalt
                                Completely Seamless Waterproofing

                              • Fire Performance achieving BS 476: Part 3: FAA

                              • Completely seamless waterproofing with vapour resistivity

                              About IKOAbout IKOGet Project SupportGet Project SupportRequest a CallbackRequest a Callback
                              We use cookies in order to give you the best possible experience on our website. By continuing to use this site, you agree to our use of cookies and our Privacy Policy.
                              Accept