Green and Brown Roofs
Living roofs are increasingly being used on buildings, both as a feature and for their environmental benefits. We are experienced at installing green and brown roof systems, and are approved installers for Optigreen, IKO and Alumasc.
Green roof systems are designed for, and installed on, waterproofed roofs, terraces and podium areas. They enhance a building’s waterproofing capability and visual appeal, and benefit the surrounding environment.
The benefits of green roofs include:
- Protecting the building from extreme temperature differences
- Acting as a heat shield from the sun’s UV rays in summer
- Retaining heat whilst safeguarding against the impact of frost, hail and snow in winter
- Minimising the impact of rain in land drains, retaining water from 40% to 95%, depending on the type of roof installed
- Reducing noise as sound is absorbed within the vegetation
- Providing a habitat for local vegetation, birds and wildlife within the system
- Increasing environmental benefits as the roof becomes more established
There are various types of green roof system including:
- Sedum lightweight composed of herb vegetation and can retain 50% water
- Nature retention composed of herbs, sedum and grasses, and can retain 60% to 80% water
- Landscape garden composed of perennials and woody plants, and can retain 70% to 95% water
Living green roofs require maintenance so it’s important that access and fall restraint systems are incorporated within the scheme. The maintenance requirement for a sedum lightweight roof is one to two visits per year, and for landscape garden roofs, up to five visits per year depending on the planting scheme.
Brown roofs are a build-up made from local recycled brick, concrete, composted bark, vegetation and a medium clay soil.
As with green roof systems, brown roofs protect buildings from all types of weather, particularly the impact of rain, and the sun’s UV rays.
The substrate is designed to be self-seeded by the natural colonisation of the local flora and fauna, promoting biodiversity, benefiting the local wildlife and helping to offset the disruption caused by the building foot print.
Brown roofs require no maintenance, therefore helping to protect vulnerable species as there is no interference from human or animal contact at roof level.
Visit Projects to view our green / brown roof works.