House M / Plan:b arquitectos
Green roofs are composed of a series of layers that allow vegetation to grow correctly, avoiding leaks that may cause damage to the structure of the building. Although there is a wide variety of options to build them, we’re presenting a system composed of a mortar base, a layer of asphalt emulsion, two waterproof asphalt membranes, a drainage layer, and the substrate that will allow the growth of plant species.
To waterproof the areas of parapets and other ‘critical’ points, the system includes a liquid polyurethane membrane, which allows the entire system to be sealed. Below, you can see some application keys of the different components of a green roof, and the benefits of this liquid impermeable layer.