Extensive versus intensive green roofs
Two types of green roof are generally defined, which differ in their structural thickness: the extensive green roof has a layer height of 6 to 24 cm and the intensive green roof starts with a layer thickness of 25 cm and extends up to one meter. The intensive green roof resembles a roof garden and can be planted and used in a similar way to a "normal" garden - even small trees can be grown here. This type of green roof is hardly possible to build yourself, especially since the statics of the roof must first be examined to make sure that the roof can withstand such a weight, namely several hundred kilograms per square meter (!).
For do-it-yourself, the only option is extensive green roofs, which, as already mentioned, can be purchased cheaply in complete sets.
also read
- Make a green roof for the garage yourself
- Roof greening for the garage: the cost
- Green roof for the carport: cost and types
What does it cost to do a green roof yourself?
The prices of the complete packages vary a little. In general, a green roof set costs around € 40 to € 69 per square meter . We have put together the exact prices of different providers for you in this article. The scope of the sets is similar. They should contain:
- Protective film or root protection film
- Drainage mats
- Filter mat
- Inspection shafts
- Substrate
Most sets also contain plant sprouts or seeds, for example from sedum species, kitchen herbs or meadow grasses. In this article, we explain which plants are suitable for green roofs and what you should pay attention to when choosing.
How do you do a green roof yourself?
Doing a green roof yourself with the complete set is very easy. After you have thoroughly cleaned the roof, lay out the individual layers one by one. Nothing needs to be glued or screwed. The individual foils, plates and fleeces are simply placed on top of one another. Only certain overlaps and the correct order need to be observed. Therefore, you don't need any special tools for laying, a good cutter knife or an equivalent cutting tool is sufficient. You can find out how to lay your own green roof step by step in our instructions.
Tips
To save time and work, it is best to have two people install a green roof. Furthermore, sufficient security must be ensured!
