Plants for an Extensive Green Roof
- Sempervivum. This is a succulent perennial plant with about 40 species, commonly known as “houseleek” or “hens and chicks”. …
- Carex flacca or Carex glauca. …
- Carex elata “Aurea” …
- Delosperma cooperi. …
- Ophiopogon japonicus. …
- Thymus vulgaris. …
- Thymus serpyllum “Minimus” …
- Origanum vulgare hirtum.
Beside this, how long do sedum roofs last?
How long do Green Roofs Last? Green roofs have a life expectancy of around 40 to 50 years, giving them a lifespan that outperforms a number of alternative roofing options considerably.
The plant leaves trap harmful dust particles in the air, and because of the almost constant cycle of evaporation, the air temperature can be cooled. As a result, your sedum roof could help reduce the amount of smog, and improve the quality of the air around your property.
In this regard, why is sedum used for green roofs?
Sedum is a lightweight method to create a green roof, thanks to the modest substrate layer depth. Sedum can withstand drought, for example in very hot summers. Sedum is easy to maintain and requires little water and nutrients. Sedum is very resilient to diseases and insects pests.
How do you take care of a green roof?
Maintaining your green roof. An extensive green roof is almost maintenance free, but your roof garden will always need a little maintenance. This includes removing weeds carried by the wind and applying fertilizer several times a year. The plants will not be damaged by walking on them when conducting this maintenance.
What are the benefits of having a green roof?
Green roofs provide shade, remove heat from the air, and reduce temperatures of the roof surface and surrounding air. Using green roofs in cities or other built environments with limited vegetation can moderate the heat island effect, particularly during the day.
What are the disadvantages of green roofs?
Disadvantages of green roofs
- A greater expense than traditional roofs. Unfortunately for green roofs, they do tend to be slightly more expensive than the traditional option. …
- An increase in weight load. …
- Require extra maintenance.
Are green roofs hard to maintain?
An extensive green roof is almost maintenance free. But your roof garden will always need a little maintenance. This includes removing weeds carried by the wind and applying fertilizer several times a year. You will not damage the plants by walking on them when conducting this maintenance.
Do you need planning permission for a green roof?
In most cases where green roofs are installed on existing buildings, planning permission is not required. However, it is always advisable when making any kind of alteration to a building to contact your local planning department.
Are green roofs expensive?
Extensive green roofs are less expensive than intensive green roofs. A small roof (30-50m2) can cost between $150 and $400 per square metre, depending on your location, accessibility issues and other factors. An intensive green roof is generally more expensive.
Can you walk on a green roof?
Yes, you can occasionally walk on a Sedum roof. For instance, when you fertilize the roof once a year, walking on the Sedum plants is not a problem. However, be careful if it freezes: it is not advisable to walk on the vegetation if the plants are frozen, you may damage them.
How long do green roofs last?
By protecting the roof membrane, however, a green roof can extend the life of a roof by two or three times beyond its typical lifespan. In Europe, where they have been building with green roofs since the 1960s, green roofs have been known to last for from 30 to 50 years.
