Asphalt shingles are currently the most popular type of residential roof material for a variety of reasons. They are relatively inexpensive and it is vert useful. Things that determine cost are geographical location, slope of the roof, height of the building, ease of access to the premises, complexity of the project, the particular type of shingle and numerous other factors. Asphalt shingles are very simple to install enabling many homeowners to do the work themselves. They come in a variety of colors and styles such as Traditional style, Wave style, and Hexgon style.