Sedums are particularly suitable for extensive green roof applications for several reasons:

• Sedums have a very shallow root system. As the substrate layer is shallow, this is an important consideration.
• Sedums are resilient in the event of dehydration.
• Sedums do not need a lot of nutrients and maintenance, unlike most plant species.
• They are both disease-resistant and pest-resistant.
• They are extremely adaptable.
• Sedums recover quickly.

A Green Roof offers a host of benefits. The economic and environmental benefits include energy savings, sound insulation, a longer lifetime than conventional roofing materials, cleaner air and an improved temperature.

A Green Roof has an extra layer compared with a conventional roof. A traditional roof can get 21°C warmer than a Green Roof. A survey conducted in Toronto, Canada, found that residents were able to save up to 23% on cooling costs per year.

A roof is continuously exposed to UV light, rain and temperature changes. Research has shown that the roofing materials of a Green Roof last approximately three times longer than a traditional roof covering, depending on the type of roof and how it is constructed.

An Urbanscape Green Roof weighs approximately 42 kg/m² when fully saturated. The weight of a Green Roof depends on the system chosen.

The Urbanscape substrate has an A1 Euroclass fire classification. Furthermore, a well-installed Green Roof will tend to prevent flames from spreading if a fire occurs.

No, a Green Roof does not cause leaks. Only poor installation or incorrect specification of the standard roofing materials will result in leaks on green-roofed buildings.

The guidelines of Germany’s Forschungsgesellschaft Landschaftsentwicklung Landschaftsbau e.V. (FLL) are followed in various European countries. The FLL guidelines were the first to cover the design, maintenance and installation of Green Roofs.

The price of a Green Roof depends on several factors, including the dimensions of the roof, the requirements it must meet, the materials used and the total surface area.

The Urbanscape system is supplied with all the elements required to put the Green Roof together. This includes:

• Root-resistant barrier
• Drainage, with several types available depending on the project’s requirements
• Green Roll growing medium to replace traditional substrate
• Sedum blanket
• Profiles for retention
• Gravel to fill the retention detail

In the UK, there are currently no subsidies available for Green Roofs.

Yes. We currently sell the system through several retailers, and the nature of the Urbanscape Roll means that installation is relatively simple. On small projects, it can be carried out by builders or experienced DIYers.

Depending on the height, accessibility and applicable safety regulations, the following equipment may be needed: scissors, a hook cutter, broom, saw, suitable workwear, safety equipment and drain baskets.

Sedums can survive with a very low water supply. If the roof starts getting dry, its colour may become red or brown in parts. If you prefer the plants to remain green, we recommend watering the Green Roof. During lengthy dry periods of around two weeks, we recommend watering until the substrate is fully saturated.

Use Urbanscape fertiliser, known as Urbanscape Sedum Booster, twice a year in early spring and late summer. One kilogram of Urbanscape Sedum Booster is enough for approximately 40 m².

You can order Urbanscape Sedum Booster through this website.

Yes, Urbanscape Green Roofs can be fitted with an irrigation system. The Urbanscape irrigation system is easy to install and can be equipped with an automatic dosing unit.

You will need to know the construction method of the existing roof, its load capacity, its slope, the drainage systems currently used, the accessibility of water and electricity, and the availability of roof safety equipment. Before installation, it is important to check local laws and regulations.

Extensive Green Roofs are low-maintenance. The system must be checked, sedums should be fertilised twice a year with Urbanscape Sedum Booster, weeds should be removed, stormwater runoff should be checked and empty areas should be filled. During a long dry period, the Green Roof should be saturated with water. For the best possible results, a maintenance contract is available.