Here you will find the most frequently asked questions and answers 24 hours a day, 7 days a week. However, the technical issues may be different for each project. So if your roof is complex, we recommend that you contact our technical department. They will be happy to help you.

A gravel zone :
Is required in some cases to prevent fire propagtion on the surface of the roof.
Facilitates the the maintenance of the glass surfaces of adjacent facades / windows
Prevents the overgrowth of certain sensitive elements (rainwater drains for example)
Separates zones with and without vegetation

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