Green Roof Systems

From improving energy efficiency to supporting biodiversity, green roofs offer measurable performance benefits.

Benefits for the Building Owner

• Longer Roof Life: Vegetation protects the waterproofing membrane from UV exposure, temperature fluctuations, and mechanical stress. By shielding the structure, lifespan is extended and repair costs are reduced.

• Improved Energy Efficiency: The natural insulation reduces winter heat loss and limits summer solar gain, lowering overall energy consumption and supporting compliance with environmental regulations.

• Better Indoor Comfort: Vegetation and growing media improve acoustic insulation and regulate humidity, creating a more stable and comfortable internal environment.

• Increased Property Value: Living rooftops enhance aesthetic appeal and sustainability credentials. Biodiverse and sedum installations are particularly attractive in urban developments seeking strong ESG performance.

• Sustainable and Environmentally Friendly Performance: These solutions reduce carbon footprint, improve air quality, and contribute to sustainable urban living.

Environmental Benefits

• Biodiversity and Habitat Creation: Creates new habitats for birds, pollinators, and insects. Biodiverse designs incorporate varied planting schemes and native species to maximise ecological value.

• Mitigation of Urban Heat Island Effect: Surface temperatures are reduced through evapotranspiration, helping combat urban heat build-up and improving the surrounding microclimate.

• Rainwater Management: In some developments, green roof systems are combined with blue roofing strategies, in which additional water-retention layers temporarily store stormwater before controlled release into drainage infrastructure.

• Improved Air Quality: Vegetation filters dust particles and pollutants, contributing to cleaner urban air.

Each green roof type is designed according to structural load capacity, intended use, and maintenance expectations. Understanding the types of green roofs ensures the correct green roof solution is selected for the project.

Different design approaches allow solutions to be tailored to structural load capacity, access requirements, and planting goals.

With increasing urbanisation, vegetated rooftops are becoming an essential component of sustainable development and modern green roofing.

Urban Heat Reduction

Absorb solar radiation and release moisture into the atmosphere, cooling surrounding areas.

Stormwater Retention

Retention layers temporarily store heavy rainfall, reducing strain on drainage infrastructure.

Energy Efficiency

The additional insulation provided by a green flat roof system improves thermal performance and contributes to building energy compliance standards.

Sustainable Architecture

Creating a green roof supports environmentally friendly construction practices and aligns with sustainable urban planning objectives.

Root-Resistant Waterproofing for Green Roof Systems

A successful green roof system starts with a professionally installed, root-resistant waterproofing layer. This prevents root penetration and ensures long-term structural protection.

A typical green flat roof system build-up includes:

• Structural deck

• Root-resistant waterproofing membrane

• Protection layer

• Drainage layer

• Filter fleece

• Growing medium

• Vegetation layer (sedum roof, biodiverse planting, or landscaping)

Selecting certified membranes ensures green roof systems perform reliably for decades.

Due to growing environmental awareness, more and more flat roofs are being laid out as green roofs. The newly created green areas offer a welcome habitat for birds, insects and other microorganisms. They ensure an improved local microclimate and help our cities to heat up less in summer.

Green roofs also play an important role in managing the flow of water. Rainwater that falls on it is not drained off immediately by the green roof construction but is released slowly and in turn help, the sewage system from overloading or flooding. Modern retention systems reinforce this effect by temporarily storing large amounts of rainwater during heavy rain, thus enabling reduced drainage.