There are many roofing companies in the market place that are comfortable installing and replacing residential shingle roof systems. Unfortunately these companies may not be the best choice for replacement of the flat roof system on your home or the installation of a flat roof system on the new addition you are planning.
If it weren't for the heights or the pitch of the roof, almost anyone with a hammer could install a shingle roof system without a great deal of training. A flat roof system is a far more technical installation, requiring years of experience in order to provide dependability installation after installation.
Even a flat roof has to be designed with a small slope in order to provide adequate drainage. It may involve the installation of a vapour retardant and insulation to provide a desired "R" value suitable to the activity which the space below is to be used. Special considerations must be given to roofs above swimming pools and areas of high humidity.
Since many flat roof systems involve the use of hot asphalt, open flame or flammable materials, it is important that you deal with a roofing contractor both experienced in the installation of these materials and insured specifically for "hot" roofing applications in case an accident occurs. The insurance industry has been going through a major adjustment lately and many roofmg contractors are simply unable to obtain insurance coverage for flat roofing activities.