On the one hand, they attract birds and small animals and offer potential habitats. In addition, they reduce the amount of rainwater runoff that is responsible for much of the pollution in our rivers and lakes. The escaping water drain is potentially filtered and therefore cleaner than conventional roofs. After all, your standard roof is protected by UV rays from the sun and other elements through your green roof and therefore lasts longer.
Installing a green roof is initially more expensive than adding a conventional roof. The project is particularly complex when the roof of your house needs to be adapted and reinforced to install the green roof over it. There are also maintenance costs that you would not have with a traditional roof. Also note that green roofs sometimes show browns in winter or in drought. That means there are times when your room is not attractive.
There are two main types of green roofs. These are sprawling roofs and intense roofs. An extensive roof is characterized by a not very deep medium and a limited variety of plants, usually sedum and grasses. This is the roof that is best for a single family home. it generally weighs up to fifty pounds per square foot, and this includes water, plants, snow, and materials. On the other hand, an intensive roof is usually seen in skyscrapers and commercial buildings. They weigh up to 150 kg per square foot and are characterized by a deeper plant medium, up to 1.5 m depth and a variety of plants and trees.
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