R&R Enterprises Painting and Roofing done right.... the first time.
Older metal roofs often leak at penetrations, skylites, seams, and fasteners. Metal roofs with lots of foot traffic or light gage metal are very susceptible to crimping of the metal. The addition of large air handlers, vents, and other penetrations often span several flutes and end up backing up water behind the penetration. This leads to a tough repair problem.
Most metal roofs we see have had some leakage problems. Some attempts have been made to repair the seams, fasteners, and penetrations with asphaltic materials or poor quality coating materials.
Many older roofs also exhibit extensive rusting. This is both a long term technical problem and unsightly.
In addition, many metal roofs are uninsulated or underinsulated. This often leads to condensation or the loss of valuable energy. Many cold storage facilities in our area are underinsulated and have extensive condensation problems.
Leaks at Fasteners and Seams