All about sedum cassettes
Sedum cassettes are an efficient and sustainable way to install a green roof. Cassettes are easy to install. In addition, it is low maintenance and cassettes immediately provide a beautiful green result. In this article you will discover everything you need to know about sedum cassettes: from benefits and applications to costs, maintenance and purchasing advice.
What are sedum cassettes?
Sedum cassettes are ready-made containers filled with sedum. Sedum is a hardy succulent that resists drought, frost and heat well. The cassettes are laid on the roof and fit together seamlessly. Together they form one green whole.
Why choose sedum cassettes?
Sedum cassettes are often chosen when a green roof needs to be installed quickly and without complicated construction. The system is suitable for both private roofs (such as barns, extensions and garages) and business applications. Because the sedum cassettes are delivered as ready-to-use units, a green roof can be realized in a short time with an immediate green result.
What advantages do cassettes have?
Sedum cassettes contribute to better building insulation. In summer, it stays cooler inside. In winter, heat is retained longer. This makes for a more pleasant indoor climate and can reduce energy consumption.
In addition, sedum cassettes play an important role in water collection. Rainwater is absorbed into the sedum and substrate. The water is then released slowly. As a result, the sewer system is less likely to become overloaded during heavy rainfall.
Sedum cassettes also protect the roofing material. They shield the roof from UV radiation. Temperature fluctuations are reduced. As a result, the roof wears less quickly and lasts longer.
Finally, sedum cassettes contribute to biodiversity. Sedum plants attract insects such as bees and butterflies. This creates more life on and around the roof. This creates a healthier living environment.
Where can you apply sedum cassettes?
Sedum cassettes are suitable for a variety of roof types:
- Flat roofs
- Slightly pitched roofs (up to 20°)
- Garages and sheds
- Extensions and dormers
- Business properties
Buying, installing and maintaining Sedum cassettes
Buying, installing and maintaining sedum cassettes is easier than many people think, provided you follow a few steps and keep in mind some points of interest.
Buying Sedum cassettes: what to look out for?
When buying sedum cassettes, it is important to pay attention to the quality of the sedum and substrate. Check the water buffering capacity, the weight per square meter and whether the system is complete or consists of separate parts. Also pay attention to warranty and expected lifespan to ensure you are choosing a durable and reliable green roof system.
Sedum cassettes installation
Before laying the cassettes, first check that the roof has sufficient load-bearing capacity. Then you apply a root resistant and drainage layer. Then you can put the sedum cassettes in place. Many systems are designed to stay firmly in place, but sloped roofs may require additional fastening. After installation, it is important to water the plants immediately so they root well.
Maintaining Sedum Cassettes
Green roofs require little maintenance, usually once or twice a year. Check for unwanted vegetation, water the plants during prolonged drought, and fertilize as needed. These simple maintenance steps will keep your green roof healthy and beautifully green for years to come.
What do sedum cassettes cost per m²?
The price of sedum cassettes is €49.95 per m² for the 18L and the 27L water buffer. In many municipalities, subsidies are available for the construction of green roofs, making the investment more attractive.
Sedum cassettes on your roof soon?
Sedum cassettes are a practical and sustainable solution for a green roof. They are low maintenance and immediately applicable. The roof immediately takes on a neat appearance. In addition, sedum cassettes improve insulation and water collection. They also protect the roof from external influences.
Want to learn more about buying or installing sedum cassettes? Check out our tips and advice and find out which solution is best for your roof.
Frequently Asked Questions
Package of 18L water buffer: approx 37kg/m² dry, 55kg/m² saturated.
Package of 27L water buffer: approx 53kg/m² dry, 80kg/m² saturated.
For best results, fertilize sedum twice a year, in April and September. Use special sedum fertilizer for this purpose.
With proper maintenance, sedum cassettes will last 20 to 40 years.
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