The Smithsonian Institution's National Air and Space Museum was reroofed by Roofers, Incorporated during an eight month period during the fall, winter and spring of 1990/1991. The project involved the total replacement of the 78,000 sq. ft. roof system to the structural roof deck, including all composition and sheet metal flashings. Additionally, a new elastomeric membrane waterproofing was applied at the new roofs and troughs between the skylight units on the entire skylight court. As roof replacement operations occurred throughout the entire Museum, demolition operations were scheduled in the early a.m. to avoid interruption to visitors to the facility. Additional protection and care was undertaken in areas over Gallery 100 housing the Spirit of St. Louis, the I-MAX Theater, and the Spacearium.

Roofers, Incorporated maintained working conditions in accordance with OSHA guidelines, including protecting personnel with safety rails while incorporating netting to eliminate the possibility of blowing or falling debris. Extensive signage, pedestrian walkways, and protected surfaces were incorporated to protect employees, visitors, and services of the Museum while work was under construction.