Roofing

Roofing is the process of constructing or repairing a roof, or the materials used to make a roof. A roof is the top covering of a building, and it's an important part of a home because it protects the interior from the elements, insulates the home, and can even provide extra living space. 

The characteristics of a roof depend on several factors, including: Purpose of the building, Available materials, Local construction traditions, Architectural design, and Local or national legislation