Monthly Archives: January 2014

Concealed Fastener Systems More Expensive but Proven to Last in Standing Seam Metal Roofing Systems

Over the past several months we’ve talked a lot about standing seam panels and their ability to resist all kinds of weather-related challenges as well as fire, hurricanes and salt air. We’ve compared Galvalume to galvanized steel, polyester to PVDF coating and different metal and aluminum gauge thicknesses.

But the one thing we haven’t talked about are the two different types of metal roofing fastening systems—a very important topic that involves economics, aesthetics and maintenance.

Concealed metal roofing fastenerThe two most common ways of attaching a metal roof to a structure are exposed fasteners and concealed fasteners. Exposed fastened panels use a screw or nail to secure the metal roofing to the roof deck or purlins whereby the nail or screw actually penetrates an area where two panels overlap.  This can involve hundreds and even thousands of fasteners which must be spaced and driven to maintain the integrity of rubber grommets which serve to prevent precipitation from gaining access through each hole.

Conversely, concealed clip fastened panels use a system where the fasteners are driven through the clips into the roof deck with no connection or piercing of the metal panels. The clip and fasteners are concealed beneath the standing seam panel material. The panel is then laid over and attached to the clips and then mechanically or hand locked to them.
Granted, exposed fastener metal roofing panels are a less expensive alternative to concealed fastener standing seam roofs. They work best in simple roofs like gables or shed roofs but get difficult to work with on structures with dormers, valleys and complex architectural features. Continue reading

There’s No Place Like Home for a Standing Seam Metal Roof

If you think of metal roofing as being a utilitarian cover for buildings like barns, rustic hideaways and tool sheds, think again. Or, if you’ve presumed the opposite–that metal roofs are only for luxurious new homes hidden in the mountains or on spring-fed ponds–you’ll want to rethink that belief as well.

Whether it’s sufficiently scientific or not, I was curious and did a quick study of 512 residential projects where installation contractors filed for paint finish warrantees with Englert between January and December of this year. Most of the projects were new roofs but a large percentage were reroofs as well. Projects were located all over the United States. I was curious to find out how many square feet of metal roofing had been installed on these homes —and by whom.

The results tell the story of the kinds of homes and the owners who are choosing a standing seam metal roof for their home. Continue reading

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