May 23, 2022

Spain: a magnificent house with a green roof that blends in perfectly with the landscape

We are used to presenting you with tiny houses, each one more attractive than the other… For once, our choice fell on a “normal” format house. Obviously, it’s a bit special, otherwise it wouldn’t really belong on NeozOne!

So let’s go to Spain where the architecture studio ON-A based in Barcelona offers prefabricated houses with green roofs. Natural air conditioning systems available in three models ranging from 100 to 200 m². We are therefore a long way from a tiny house, which generally does not exceed 20 m² of footprint. Discovery of this Spanish GREEN NEST HOUST.

An ecological project above all

The goal of the ON-A architecture firm is above all to designing eco-friendly homes, and which merge with the landscape. The homes are also developed in partnership with ENERGREEN DESIGN, a company specializing in sustainability, energy efficiency and the circular economy. Green houses must not produce CO2 but also have a four times smaller carbon footprint than a traditional house.

Photo credit: ON-A

Green roofs to reach the goal

To achieve their commitments to the planet, architects design their houses in wood from sustainable forests. But above all, they cap them with a green roof. These roofs are equipped with photovoltaic panels which make them energy self-sufficient, but they are also made from recycled or renewable materials. The “green roof” provides natural air conditioning and blends into the landscape. With its rounded lines and its roof which seems to go down to the ground, it does not denature the environment in which it is built.

What are the benefits of a green roof?

Green roofs provide perfect thermal and sound insulation, this is probably their main advantage. The layer formed by the plants forms a screen that absorbs most noise pollution. Of course, these roofs also keep cool in summer and warm in winter. The plants on the roof create a kind of microclimate which allows this phenomenon of natural air conditioning. These green roofs also improve air quality since they absorb pollutants, dust and fine particles ambient air. Finally, they bring back the biodiversity around your house, by attracting bees, insects and other species that had deserted the cities in favor of more “natural” corners.

And the disadvantages?

The main disadvantage of green roofs is their price since it will take around €100 per m² for a green roof, against €60 per m² for a traditional roof. The waterproofing must obviously be irreproachable and it is necessary to add substrate, anti-root felts and supports to prevent the plants from slipping. The weight of a green roof can also be problematic because it will become waterlogged and must have a structure capable of support about 100 kg per m². The last disadvantage of a green roof will be its maintenance, even if there are now some that do not require any (but you may have to see the price). It may be necessary to add drip irrigation for hot weather and all this at a cost… You also need to be able to easily access the roof to be able to monitor the growth of the plants that live there, and possibly replace them if necessary .