Roofs are an essential part of every residential, commercial and industrial construction. The roofs provide support to the foundation and walls of the building and prevent the interior space from various weather elements such as rain, heat, and winds. There are several factors which play a part in the construction of the roof. There are numerous types of roof designs such as flat, curved and slanted. In residential houses, a slant or curved roof can be used but in commercial and industrial construction a flat roof is used. There are many ways through which people can access the roofs of buildings. Mostly there are stairs that lead to the roof and people can also use ladders but ladders can be dangerous. One another convenient way to access the roof is through a roof hatch which opens up on the rooftop. There are many roof hatch manufacturers who design and develop purposeful roof hatches that allow easy entry and exit from the roof, particularly to the workers. The workers used th...