How does the corrosion resistance of Galvalume sheet compare with that of galvanized sheet, and how long can a Galvalume sheet roof be expected to last?
Galvalume sheet has been successfully used in roofing applications for more than 25 years; it has been evaluated in outdoor R&D tests for well over 30 years. Based on these tests, in which corrosion weight losses were measured and compared with galvanized, Galvalume sheet is projected to outlast galvanized sheet (with an equivalent coating thickness) in various atmospheres by up to nine times. Likewise, recent inspections of 82 low slope Galvalume roofs up to 22 years old in the eastern U.S. confirms the R&D results. These roofs are in excellent condition and are projected to last 30 to 40 years before requiring major maintenance. Should architectural Galvalume sheet roofs be installed on decking or over shingles on residential applications? Wood or steel decking is normally used for prepainted Galvalume architectural roof systems on both residential and nonresidential applications, but it is not recommended to install the panels in direct contact with the decking. Instead, 30 pound fe
Related Questions
- How does the corrosion resistance of Galvalume® sheet compare with that of galvanized sheet, and how long can a Galvalume® sheet roof be expected to last?
- How does the corrosion resistance of Galvalume sheet compare with that of galvanized sheet, and how long can a Galvalume sheet roof be expected to last?
- Is Galvalume Steel really that much better than galvanized sheet metal?
