Pergolas have been used in dwellings for centuries, classically, to add a shaded walkway, to link pavilions or to allow a sitting area which allows the breeze and sun to filter through. This amazing addition to a home will not only add to comfort, it can be an attractive bonus to the resale value of the home. There are several pergola roof options. The pergola roof options are decided not only by the aesthetics of the homeowner but what purpose the pergola is to serve. One example of pergola roof options; metal roof. The advantage of a metal roof is that it can be adjusted to the exact size and shape of the structure. A choice of metals such as copper, aluminium or tin also helps to make an easy decision. Metals not only easy to cut and shape, they also provide excellent protection from the weather conditions.