COMMERCIAL ROOFING INSTALLATION, REPLACEMENT, MAINTENANCE, & REPAIR! We maintain, repair, and replace all types of low-slope and flat roofs for commercial, industrial, municipal, and institutional customers since 1975. Serving the Detroit metro area, including Wayne, Oakland, Washtenaw, and Macomb counties. MacDermott Roofing has been providing commercial roofing installation, replacement and repair throughout the Detroit metropolitan area, including Wayne, Oakland, Washtenaw, and Livingston counties, for more than 40 years.