There are two main methods to attach standing seam panels at the eave of a building: fixed and architectural. As might be expected, the fixed attachment method consists of attaching screws through the panel and into eave trim positioned under the roof panel. Conversely, architectural eave details don't involve the use of visible fasteners.The photos to the right show fixed and architectural installations.
When comparing these two options, the fixed attachment method represents a more economical installation approach. It also counts on tape sealant to be correctly placed and the fastener properly installed to achieve optimum performance. Leaks can occur with the fixed attachment method when one or both of those criteria aren’t met.
Conversely, since the architectural approach doesn't involve piercing the panel with fasteners, it is typically viewed as the most watertight and aesthetically pleasing. Standing seam panels need to be modified by removing the vertical seam and creating an eave flange that is folded under the roofing panel and engaged with the eave flashing during the architectural eave detail installation. Roofing contractors can perform the modification on the job site by measuring the panel and cutting with hand snips.
Another option is to have the notch factory-formed in a McElroy Metal manufacturing facility. With factory notching, the result is a much cleaner and consistent cut. Additionally, the panels arrive at the jobsite ready to be folded over and installed. In today’s tight labor market, this labor savings alone is a huge benefit.
Check out the video highlighting the steps to create an eave notch in the field and to better understand the factory-formed option.
McElroy Metal provides factory-notching on Meridian, Medallion-Lok, and Maxima standing seam panels.
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