Agreen roof, if installed correctly, it brings a large number of advantages to the home: it absorbs rainwater, reduces the risk of flooding, enhances the aesthetic impact of the home, increases the economic value of the house, improves energy efficiency, increases the energy class of the building, improves air quality and creates a green habitat that helps local biodiversity. If agreen roofbrings all these advantages, why not try to imagine implanting it on your home?
On the market there are green roofs ready for installation, but if you are considering installing agreen roofon your home, your mind will certainly be crowded with questions! The most common doubts are two:
can I set up agreen roofeven if my roof is sloping?
Can the structure of my home withstand the weight of the green roof?
As for the slope, it is not recommended to install agreen roofon a sloping structure that has an angle greater than 10 °. When the roof is extremely sloping, it is best to consult an expert. If the inclination is less than 10 °, then you can also try your hand at it alone.
As for the weight, a lot depends on the load capacity of the structure that will host thegreen roof. Generalizing it is recommended to installgreen roofssimple, these have a weight that varies between 60 and 150 kilograms per square meter. The figures just indicated refer to the various layers that make up thegreen roofbut not water or snow: consult an expert to understand the load capacity of theroofand in the weight estimate, calculate any overweight dictated by the accumulation of snow and the saturation of the substrate given by rain. Keep in mind that the roof can always be reinforced with wooden supports.
To facilitate the preparation of agreen roof, it is possible to organize it in three layers: an impermeable membrane, an earthy substrate and vegetation. In Italy, all houses are equipped with a first waterproof layer, to protect the house from the roots and to make theroofmore resistant, it is recommended to add a second layer. When creating the waterproof layer, you must keep in mind that excess water needs an ad-hoc path in order not to accumulate and flow into the gutters. Thus, between the insulation and the soil, pebbles or other light stones capable of draining the water must be laid. The depth of the substrate must be between 7 and 20 cm, in relation to the need for the vegetative layer.