The Flat Roof.

A flat roof or deck is composed of several elements: the support, the roof slope, the vapor barrier, the insulation, the seal, the apertures and protection or roof covering.

The elements of a flat roof / deck / terrace roof

There are normally several layers:

• An impermeable membrane placed on the surface prevents water from entering the structure and the house.
• A vapor barrier which protects the insulation from moisture.
• Thermal insulation: to insulate the roof area from the heat and cold.

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