Frequently Asked Questions Q. How is prefabrication a benefit?
A. Duro-Last factory fabricates approximately 80-85% of the roof at one of its four manufacturing facilities. Through prefabrication, roof sections up to 2,500 square feet are manufactured inside under controlled conditions. The rooftop can be a harsh environment where heat, cold, wind and moisture will affect the quality of a seam made by a rooftop laborer. Manufacturing under controlled conditions virtually eliminates workmanship concerns.