Commercial Roofing Repairs And Replacements DONE BY INTEGRAL COMMERCIALS ARE TO THE CUSTOMERS SATISFACTION AND IS OUR PRIORITY. WE WILL WORK ALONGSIDE YOU TO ENSURE YOUR IDEAS. Installation of a new construction flat roof. Installing GAF 60 mil TPO Fleeceback. Installation of 22 gauge metal decking. Installation of a Retrofit Roof system. Installing a GAF 60 mil TPO Rehinobond roof system. Roof replacement in progress. Tearing off a BUR roof system.