Mexicans create green roofs that cool more than 15º

Original note published in Unknown Mexico

The green roofs, also known as green roofs or roof gardens, are systems environmentally friendly in which it is possible to plant some types of vegetation (from grass to tree) on one plate.

Mexicans create green roofs that cool more than 15º
Mexicans create green roofs that cool more than 15º

And while its placement has numerous benefits like regulating temperature, this is it green roofs Traditional ones are usually expensive and heavy, so they require certain conditions and are inaccessible to low-income families.

However, this may change thanks to Mexican ingenuity. And the fact is that a group of specialists from the Autonomous University of Chiapas (UNACH) managed to create this after a long study that lasted about 12 years Domotej, a green roof that can cool down to 17º.

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According to an academic article on the Domotej::

“This system involves improving its thermal performance and is suitable for use in a tropical climate … In addition, it can offer some advantages over traditional systems as it requires less economic investment and an advanced construction is carried out by the same user can be used become. “, Evaluation of the structural behavior of the precast element for the Domotej roof.

While normal roofs weigh up to 200 kilos per square meter, those of Domotej They weigh 50 pounds per square meter (which is a big plus). In addition, the cost of these green roofs is estimated to be 13% lower than the usual ones.

To learn more about this project, you can visit Techos Alternativos de Chiapas’ profile.

Image: Green roofs via Facebook

How do you work?

Due to the strategic presence of the vegetation, Domotej green roofs Allow the elimination of the direct heat gain generated by solar radiation. On the other hand, the albedo (percentage of radiation that surfaces reflect in relation to the radiation falling on them) is also reduced.

The process of photosynthesis in plants also makes a significant contribution to reducing the effect of “heat islands” and to purifying the surrounding air. It is worth noting that it is advisable to place endemic species for easier maintenance of the garden.

Advantages of green roofs

  • They reduce pollution and provide oxygen.
  • They protect against solar radiation.
  • They help regulate the temperature and increase the humidity.
  • They work as heat insulators and thus enable energy savings.
  • They reduce maintenance costs on the roof (waterproofing is no longer required).
  • They slow down the waterfall in the rainy season and thus help prevent flooding.

Image: Green roofs via Facebook

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