The skeleton of the roof forms the basis of the part on which other structures such as the roof covering and the chimney are placed. So it would not be wrong to say that the skeleton of the roof is the foundation of the roof. Roof skeletons are usually made of wood. However, different kinds of roof skeletons are seen in the buildings which are made of different architectural style and different materials. Repairing roof skeletons that are built incorrectly, or that cause problems later, as well as construction of a skeleton from scratch requires a separate job and expertise. The roof skeletons, which are usually made of low-strength or problematic wood, are not used in the construction of the building.