The thickness of a green roof
Green roofs have different heights. Very low green roofs start at 6cm (so-called extensive green roofs), very thick green roofs can reach up to one meter (so-called intensive green roofs). The thicker the green roof, the heavier it is. Very thick green roofs can weigh up to 1000kg per square meter when wet. Therefore, this type of green roof is not suitable for every roof.
On very low and therefore lighter green roofs, the choice of plants is significantly smaller, and trees can even be planted on very thick green roofs. Here is a brief overview:
also read
- Green roofs themselves make costs
- Roof greening for the garage: the cost
- Green roof for the carport: cost and types
| Height of the green roof | Plant selection |
|---|---|
| Up to 6cm | Mosses, thick-leaf plants |
| 7-15cm | Herbs and low meadow plants and grasses |
| 15-25cm | Tall grass and flowering plants |
From a height of 25cm, one speaks of intensive green roofs. Grasses do not require intensive greening, but they do need extensive extensive greening.
Which grasses are suitable for green roofs?
When choosing the grasses for your green roof, you should consider the following:
- Choose grasses that can withstand a lot of sun.
- Choose at least a few grasses that are evergreen so that you have a green roof even in winter.
- Choose grasses that are easy to care for.
- In the case of a green roof with a height of less than 15 cm, choose only low-growing grasses such as B. Schiller grass, from a height of 15cm you can also plant taller grasses such as B. Tufted hair grass.
| Surname | Height | Heyday | characteristics |
|---|---|---|---|
| Blue fescue | Up to 30cm | June July | Bluish stalks |
| Red sedge | Up to 50cm | summer | Red-brown leaves |
| Blue-green sedge | 20 to 80cm | April to June | evergreen |
| Quaking grass | Up to 30cm | May to June | Loosely flaky appearance |
| Schillergrass | Low | June to July | Grows spherically |
| Rainbow fescue | Up to 45cm | June to July | Wintergreen |
| Alpine bluegrass | 15 to 30cm | June to August | |
| Real sheep fescue | 5 to 60cm | May to July | |
| Eyelash pearl grass | 30 to 60cm | summer | Summer green |
| Tufted hair grass | Up to 70cm | June to August | Tolerates high drought |
Tips
Don't order your grasses online, get advice from specialist retailers. In this way you can be sure that the grasses are also suitable for your green roof and that they will thrive.
