The green roof is a system used for centuries, both in cold weather such as the Nordic countries, where they have a long tradition of vegetable covers of all kinds and in hot climates. This is due to the fact that the thermal inertia and insulation characteristics are so beneficial that they provide this type of roof with high adaptability, managing to regulate both excess heat and cold.

Oxygen Production, Carbon Dioxide Consumption

  • Roof vegetation takes, like all plants, CO2 from the air and releases oxygen through the process of photosynthesis.
  • Along the same lines, we know that plants are able to filter dust and dirt particles by adhering to their leaves. In turn, they can absorb harmful particles such as gases and aerosols, and even heavy metals.
  • If we imagine a future in which the roofs of the buildings of our cities are protected by vegetation, this would greatly improve the air quality of our cities.

Temperature And Humidity Regulation

  • We must consider the plants that inhabit a vegetation cover as what they are, living, and intelligent elements capable of regulating naturally what so many technical resources we have always invested in regulating artificially.
  • Vegetation reduces both temperature and humidity fluctuations through the evaporation of water, photosynthesis, and the ability to store heat from its own water.
  • In this way, in summer, the cover is cooled by evaporating the water that has stored the vegetation to the environment.
  • In winter, that is to say, in cold temperatures and high humidity, and the strategy is to condense the humidity in the plants at night. The morning dew that we all know implies a recovery of heat by storing the heat of the water itself, as well as a decrease in humidity, which is retained by the vegetation itself.
  • All these processes and strategies minimize the energy expenditure that we should use to acclimatize our home artificially. It guarantees ideal indoor conditions even in very cold climates such as in Germany, where 0ºC has been measured for an outside temperature of -14 ºC, placing this as one of the main advantages of a house with a green roof.

Suitable For All Types Of Covers

  • If we have seen something so far in this article, it is that the green roof has an adaptive capacity that has led it to persist until our times as a successful architectural solution.
  • And it is that the numerous advantages of a house with a green roof allow this system to have been able to reinvent itself and adapt thanks to technological advances, which today allow us to carry out a flat or inclined, cold or hot, walkable green roof. or not.

Improves The Life Of The Waterproof Roof Membrane

  • It should be noted that the highest incidence is caused by mechanical damage due to the strong temperature changes, which expand and contract the membrane throughout the year.
  • The substrate layer and the vegetation that is added to the landscaped roof allow this membrane to be protected from any inclement weather, as well as reducing the temperature fluctuations that generate the greatest damage.

Simply be aware that, in turn, we must protect the impermeable layer from the growth of the roots so that they do not pierce it through an additional root protection membrane.

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