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Green Roofs: The New Lungs of the City

They say that the trees are the lungs of the earth, but in the city, they are becoming more and more rare… In order to improve the situation, it is possible to opt for the green roof, a popular solution for many reasons. Let’s take a look.

It is mainly in the city that green roofs can be installed, because only a roof with a low slope can accommodate them, which is especially the case of apartment buildings or commercial buildings. The guide de la Régie du bâtiment du Québec describes the different standards to be respected for any individual or merchant wishing to opt for this type of structure. There are a lot of rules to follow, but the result is worth the effort!

Health and Environmental Benefits

In the city, the heat islands caused by the omnipresence of concrete and asphalt are a big problem, but the real challenge remains the reduction of CO2 in the atmosphere. Did you know that in one year, a single vegetated roof can remove the equivalent of the CO2 emissions of 15 cars? Unbelievable, but true!

In addition, green roofs absorb rain water; They minimize runoff and minimize flood risks due to their superior sealing. This type of roof is not only good for the environment (and our health!), but also for morale, because it allows people to have a space to relax. 

For Bees

We are all aware that it is imperative to protect bees: they are less and less numerous, and who will play the indispensable role of pollinising plants if one day they disappear? Although, it is a fact that the use of pesticides in fields is what caused this problem.

Fortunately, we can help the bees thanks to urban hives! Located on green roofs,urban beehives contribute to the growth of bees, and also allows us to enjoy their honey! The company Alvéole even offers complementary services according to your needs. Are you still hesitating?

Is it Economical?

A green roof is relatively expensive, but its long-term investment is very interesting, especially because it allows to save on heating and air conditioning by acting as an insulator. It also increases the life span of the roof and membrane since it protects them from UV rays.

Also, by creating a vegetable garden, great savings on the purchase of fruits and vegetables are to be expected. Learn the different conservation techniques for your crops and you will be able to enjoy your own fruits and vegetables throughout the year!

However, it should be noted that the green roof will unfortunately not be in place Ad vitam aeternam; the waterproof membrane has a lifespan of between 30 and 50 years, it must be removed for replacement.

Noise Reduction

With the constant noise of big cities, it can sometimes be difficult to find peace and quiet. Green roofs have the ability to soundproof the parts directly beneath the structure. The substrate that they are made of blocks part of the low frequencies, while the plants block the higher ones. On average, five inches of substrate can reduce noise by up to 40 dB.

With all these advantages, one wonders why there are not more green roofs in the cities. The purchase price and the strict regulations can scare some people off. When will Government subsidies entice homeowners to install these benefactors?