The idea of a vegetated roof has always interested me.
In doing some research I realized that this process had (almost) the benefits :
The main benefits of a green roof :
- thermal inertia to achieve significant energy savings
- a very good soundproofing
- a looks better than solid foam tiles
- reduced temperature variations up to 40%
- protecting the waterproofing membrane against UV, temperature rise and weather (hail gel, ...)
- filtering rainwater
- improving air quality (humidity, dust, toxic).
- extension of longevity for the waterproofing membrane to 40-50 years
The few constraints:
- limited to low-slope roofs (\u0026lt;35 °)
- 's large investment in strengthening the structure and the addition of substrate, plants and drainage layers (even if over time we found it).
The layers
Three large family of revegetation
A thin layer of soil (about 10cm) covered with small plants of different colors without Thanksgiving Service (off-set a cleanup of weeds once a year)
A layer substrate most important (more than 15cm) allowing more hungry plants thrive. It is possible to make a garden on its roof. The supporting structure must be even stronger and maintains is more important and must be irrigated but the appearance is nicer.
This is a compromise between the two with 15-20 cm of soil and planting the nutritional needs measured (Eg grass)
In conclusion we would really like to revegetate 50 to 60% of the roof of our future home (especially the rooms to improve the acoustic comfort and thermal). However, after our appointment with the Mayor of Pirey , we're not very optimistic. Indeed, we have always refused to explain the flat roofs.
We could revegetate a pitched roof but the price is even more so. We'll try to find with our architect a solution that fits all with minimal impact to the aesthetics of our project started.
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