Milwaukie Commercial Roofing August 1st, 2017. Welcome to ORCN, find local pre-screened roofing contractors here or with our free app "Oregon Contractors".Milwaukie commercial roofing contractors, view our list of Milwaukie commercial roofing contractors here. No private info needed to view our list of Milwaukie roofers. Our list is hand picked from some of the the best roofers that Milwaukie has to offer.Top Milwaukie Commercial Roofers Are Listed Here!Milwaukie Commercial Roofing Contractors.Commercial roofing systems have many different methods of applying products to a flat roof. One of the newest forms of roofing is T.P.O. roofing. It is sheets of flexible material that is welded together with a hot iron. The most dangerous method is torch down roofing as it is applied with a torch. Replacing your commercial roof will not be a fast process, It can take some time. This is not a process you want to rush the roofing contractors to get done.How we rate our contractors.