A high-quality architectural zinc manufacturer can provide in-depth information on efficient and cost-effective fabrication and installation. For instance:
- Roll-forming zinc panels are almost always less expensive than brake-forming, and there are numerous profiles that can be roll-formed for roofing applications.
- Since labor often represents 66 percent or more of the contract, expensive time-consuming details should be reviewed to ensure they are necessary to fulfill the architect’s vision.
- Fewer pieces can save time and labor. However, heavier gauge zinc or smaller panels may be necessary to reduce perceived waviness (caused by oil-canning).
- Panel sizes should be chosen to optimize the width of the zinc sheet or coil and to minimize scrap material. Similarly, panel lengths should be limited for easier handling, fabricating, and installing—as well as to reduce waste in the shop and the field.
Zinc manufacturing partners also should provide care and cleaning guidelines. Some manufacturers may require washing for its warranty. For aesthetic reasons, it is recommended to clean the surface of the material in marine environments with clean water (not seawater) at least twice a year or more, depending on local conditions. Generally, zinc roofing takes minimal maintenance to retain its distinctive aesthetic and long-lasting, sustainable performance.
Author
Charles (Chip) McGowan is the president of RHEINZINK America Inc. He has more than three decades of experience working with architectural, specifications, and installation professionals on projects featuring metal building products. McGowan is a member of ASTM B02 Nonferrous Metals and Alloys Committee and represents RHEINZINK’s membership in the Metal Construction Association (MCA), U.S. Green Building Council (USGBC), and the American Institute of Architects (AIA). He can be reached at charles.mcgowan@rheinzink.com.
