This system has been especially designed for all those situations in which there is an existing deteriorated roof covering material such as corroded metal sheets and cracked fiber-cement, asbestos sheets or asphalt shingles, which needs to be renewed.

The advantages of the system are explicit: no need to remove the existing structure; Onduline will cover the existing roof and will bring with it not only its major benefits such as waterproofing, sound/heat insulation and endurance, but will also reduce drastically the installation costs by simply eliminating the removal and disposal of the old roofing sheets.