Green roof systems
Green roofs, or living roofs, are partly or completely covered with vegetation, planted in a growing medium, and installed over a waterproofing membrane. They may also include additional layers such as a root barrier, a drainage layer, water storage and irrigation systems. They can contribute to BREEAM credits or help a development achieve planning permission. Green roofs can help to:
- promote biodiversity
- combat the urban heat islands effect
- absorb CO2
- reduce heat loss
- provide acoustic or thermal insulation
- help with sustainable drainage schemes
- provide recreational space
Green roof systems fall into five main types: Extensive green roofs, Intensive green roofs, Semi-intensive green roofs, Biodiverse roofs and Brown roofs.
Green Roof Substrate
A green roof is a unique environment that calls for a unique growing medium. With almost 2 decades of growing sedum and wildflower blankets for use on extensive green roofs, Turfonline have perfected a growing medium that meets the needs of both the building and the plants. Our specially blended extensive green roof substrate is tested to the...Harrowden- PRODUCT
Green roof sedum fertiliser
Harrowden's specially formulated Sedum Fertiliser, designed for living roofs, has a completely new formula that covers 65m2. Sedum Fertiliser is an essential part of their recommended green roof maintenance regime. Harrowden Sedum Fertiliser is a slow-release organic feed formulated for healthy and robust plants. This maximises benefits for any...Harrowden- PRODUCT
Semi-Intensive Lightweight Green Roof Subsoil - green roof sand & aggregate
MCM Lightweight Green Roof Subsoil is a specialist blend made from sand and lightweight aggregate, designed for green roofs, roof gardens, and podium landscapes where reduced weight is important: specialist subsoil blend for green roof and landscape applications; lightweight composition reduces structural load on buildings; suitable for use with...MCM-SE- PRODUCT
Wildflower plugs for green roofs
A specially-curated blend of hardy, low-maintenance native British wildflowers for green roofs. This mix, including species like sedum, wild thyme and saxifrage, not only adds a burst of colour but also contributes to biodiversity and helps with insulation. Turn rooftops into a sustainable and eco-friendly haven that benefit both the environment...British Wild Flower Plants- PRODUCT
Terraxx - green roof drainage membrane
Terrax is a dimpled sheet with a geotextile layer which acts as a surface layer. Normally used as a green roof external drainage layer, it also protects the primary waterproofing applied to substrate. Laminated on to the dimpled sheet, a layer of compression-resistant permanent filtration geotextile prevents the dimple structure from being clogged...Delta Membrane Systems- PRODUCT
ASF green roof single cycle shelter
ASF green roof cycle shelters use a roof tray and sedum matting to convert the usually utilitarian product of a cycle shelter into an attractive unit that promotes biodiversity. The frame and tray of the cycle shelters are manufactured in 275 carbon steel from recycled sources. As standard they are finished galvanised and powder coated in holybush...Architectural Street Furnishings- PRODUCT
ASF green roof double cycle shelter
ASF green roof cycle shelters use sedum matting to convert the utility product of a cycle shelter into a pleasing and architectural unit that promotes biodiversity: frames and trays are manufactured in 275 carbon steel from recycled sources; supplied with GT4 extensive roof garden substrate and roofdrain membrane - pre-grown sedum matting is...Architectural Street Furnishings- PRODUCT
Enviromat® - sedum matting for green roofs
Enviromat® sedum matting is used for extensive green roofs, as well as being well-suited as a low-maintenance ground cover. The overall appearance of an Enviromat® sedum green roof is well manicured, neat and contemporary. Grown on a special matting for strength, versatility and easy installation, Enviromat® is supplied with 95% coverage of mature...Harrowden- PRODUCT
Roof glazing replacement - Green Park Station, Bath
Following a safety incident at Green Park Station in Bath, the Standard Patent Glazing Co's expertise was sought to assess the condition of the station’s glazing system. After conducting a thorough condition survey, it compiled a comprehensive report indicating the need for a complete replacement. Green Park Station, originally known as Queen...The Standard Patent Glazing Company- PROJECT
Lightweight aluminium green roof edging
Lightweight aluminium green roof edging is available in two face heights to suit Harrowden Turf's range of living roof products. 33 laser-cut slots per metre allow the free draining of water, whilst retaining pebbles or substrate. The base on both versions is 100mm wide allowing the weight of the green roof system or pebbles to hold it in place...Harrowden- PRODUCT
Living green roof for historic windmill home
Harrowden supplied its premium grade turf for the green roof on an extension to a 300-year-old windmill as part of a home renovation. A grass mound was excavated to make room for this semi-submerged extension with grass roof. Visually, the project has barely had an impact on the building yet the living space has more than doubled...Harrowden- PROJECT
Wildflower green roof for cycle shed
As nearby parking spaces are few and far between, staff are encouraged to cycle to work at the Boathouse in Teddington. Landscape architects Outerspace therefore required a cycle store. This was designed to incorporate a green roof which would feature wild flowers. The clients chose Meadowmat woodland shade as the site was too shady for sedum matting or...Harrowden- PROJECT
Green roof creates interest for nursery children
Little Jungle Nursery in SE London has strong environmental and ecological ideals and wished to bring plants, pollinators and other wildlife into its environment. A green roof was installed on a small storage shed at the front of the nursery that children could see from the window and could watch flowers develop and see insects at work...Harrowden- PROJECT
20mm HDPE drainage board for green roofs
Harrowden offers a tough cuspate drainage board with integral filter fleece that is ideal for intensive and semi-intensive green roofs, providing irrigation and drainage. A 20mm Black HDPE (high-density polyethylene) punched cuspate drainage board with a geotextile filter fleece bonded to a single side (top). The 20mm cuspate provides water...Harrowden- PRODUCT
Enviromat Sedum Green Roof Kit for pitched roofs
This is a simple green roof kit that can be installed in a day. It comprises a root barrier, water retention blanket and sedum matting. Enviromat pitched green roof kit is suitable for living green roofs with a gentle slope between 3 and 20 degrees. If the roof has a steeper or shallower pitch, Harrowden Turf provides advice on specification. The...Harrowden- PRODUCT
Intensive Green Roof Substrate - lightweight soil for roof gardens
MCM Intensive Lightweight Green Roof Substrate is a lightweight, low-porosity soil blend made from sand, compost, and aggregate, designed for intensive and semi-intensive green roofs, podium landscapes, and container planting. Supplied in bags or bulk, it supports healthy, well-drained plant growth while reducing roof load weight: lightweight...MCM-SE- PRODUCT
Extensive Green Roof Substrate - lightweight compost blend for sedum roofs
MCM Extensive Green Roof Substrate is a lightweight soil blend made from 10mm graded PAS 100 compost, 8–14mm expanded clay aggregate, and mulched wood fines. Designed for low-maintenance green roofs and sedum planting, it has low organic content, high porosity, and balanced particle size for effective drainage and plant support: lightweight...MCM-SE- PRODUCT
Green roof entrance canopy for NHS mental care unit
Handspring Design was commissioned by the client to design and make an entrance canopy for a new NHS mental care unit at Rotherham main hospital site. The client wanted a curvy timber structure with a green roof for a similar price to the glass and steel one proposed by the architect. Handspring developed the design using its signature steam...Handspring Design- PROJECT
Green roof, shingle and steel entrance canopies
Handspring has made a number of entrance canopies and covered walkways for new and reburbished schools and NHS buildings. These have all been of timber construction but have varied from traditional oak mortise and tennened pegged timber joints to flitch plates with massive section douglas fir to curvy gluelam beams. They have all been individually...Handspring Design- PRODUCT
Outdoor classroom with green roof - Dore Primary School
Handspring designed, manufactured and installed a 7x5m outdoor classroom for Dore Primary School in Sheffield. The main frame is made from freshly sawn UK FSC Douglas Fir using traditonal timber framing, with all joints draw dowelled with oak pegs...Handspring Design- PROJECT
Onion shelter with green roof and seating - Treharris Park
Handspring Design designed, manufactured and installed an Onion shelter with green roof for Treharris Park in Merthyr Tydfil. The shelter features steam-bent glue-laminated oak ribs and seats and curvy cladding, with Douglas fir roof boards and wildflower turf on top, all built on a galvanised steel base....Handspring Design- PROJECT
Timber garden room and pergola with green roofs
Handspring designed and constructed a garden room and wrap-around pergola from UK-grown Douglas fir. Both structures feature wildflower and sedum green roofs. The garden room has a traditional timber frame with pegged mortise and tenon joints that are visible on the inside, with a super-insulated clad exterior and triple-glazed roof lights. The 8...Handspring Design- PROJECT
Nordic Green - pre-patinated copper roof cladding
Nordic Green copper roof cladding is pre-patinated at the Aurubis mill to immediately provide the same green patina that naturally develops over time in the environment. Different intensities of patina flecks can be created revealing some of the dark-oxidised background material, enabling architects to determine the type and intensity of the green...VM Building Solutions Ltd UK- PRODUCT
Green roof cycle shelter enriches Leeds Arts University campus
Broxap was commissioned to design, manufacture and install a custom and secure New Forest cycle shelter with a living green roof to align with Leeds Arts University’s focus on biodiversity and sustainability. Senior Sheffield cycle stands provide capacity for 24 bikes...Broxap- PROJECT