jdh1558

We designed and installed a TPO roof on a new contemporary residence. Because of aesthetic reasons we used 1/8" per foot for slope. The project utilizes interior roof drains and tapered insulation over steel deck and structure. The slope runs are all less than 30 feet and there is no ponding. The roof has performed as intended for 5 years, the structure was designed by an engineer for this slope. The residential building official for the city said that this was fine..." as long as the structure was design properly, the roof drains properly and the roof system was intended for the application, there is no minimum slope." Furthermore we understand that the 301.1.2 from the IRC 2000 supports this position. Does this roof meet code? Should there be any cause for concern based on the information that I have shared?