In addition, the superior strength of both types of modified bitumen roofing material make then highly impact resistant and long lasting. Typically installed and ideal for low sloping roofing systems, Prosperity Roofing & Exteriors, LLC installations ensure that water pooling is limited to minimize any form of water damage. Easy to install, a modified membrane roofing system is best carried out by a professional and certified roofer experienced with built up roofing techniques.