Metal Roof Innovations Central

What is a Rooftop Avalanche? [video]

Posted by Kimberly Reichert on Jan 30, 2019 11:17:24 AM

It is a sudden release of snow off a rooftop. Falling snow forms a temperature-sensitive bond to the surface of a metal roof. As that roof is warmed, (through sun or building heat loss), the bond with the snow is broken and a thin film of melt water lubricates the roof. This sudden release from a rooftop can dump many tons of snow below the eaves in a matter of seconds, endangering building elements, landscape, vehicles and pedestrians.

Qualifying Snow Retention Systems for Metal Roofing, from the Metal Construction Association discusses the rooftop avalanche in the following terms:

Metal roofs provide durable, long-term solutions and have been preferred by many for use in challenging northern and alpine climates where snow and its migration on and from the rooftop is a normal occurrence. Such climates can pose unique challenges for any roof. Pitched roofs of a material that has a slippery surface can pose sliding snow and ice hazards below eaves. In many instances, snow retention systems are installed on these roof types in order to reduce the risk of sudden rooftop avalanche and mitigate the hazards present in the discharge areas below the eaves.

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Tags: Roof Clamps, Snow Guards, Snow stops, sliding snow, plastic snow guards, metal roofs, snow retention, S5 clamps, metal roof clamps, FAQ, Brackets, metal roof snow stops, metal roofing, metal roof clips, standing seam metal roof, snow rails, snow stopper, snow clips, snow fence, snow bar, exposed fastener, thermal movement, roof panels, rooftop avalanche

Standing Seam vs Exposed Fastened Metal Roofs: 2019 Comparison

Posted by Kimberly Reichert on Dec 19, 2018 12:28:39 PM

A metal roof is a metal roof, right? WRONG. Standing seam and exposed fastener roofs may both be metal and may even serve similar purposes, but the two styles are very different indeed.

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Tags: Roof Clamps, metal roofs, snow retention, metal roof clamps, metal roofing, standing seam metal roof, exposed fastener, thermal movement, exposed fastened

Cost Savings Best Practices for Solar Mounting on Standing Seam Metal Roofs

Posted by Dustin Haddock on Aug 24, 2017 1:24:58 PM

Best design and installation practices when using seam clamps to structurally attach PV systems to standing seam metal roofs

Standing seam metal roofing (SSMR) is the most convenient of any roof type for mounting PV modules, either crystalline or thin-film. The seams of SSMR are beam-like elements that not only add stiffness and flexural strength to the roof panels, but also provide expedient attachment points for a PV system. Joining PV modules to this roof type can be done with or without continuous mounting rails using aluminum seam clamps.

Seam Clamps and Mechanical Compression

These clamps anchor to the roof seam by pinching it within the clamp body with round point set-screws that are in no way invasive to the roof. The setscrew forces the metal of the standing seam into a recess in the opposing clamp wall, permanently deforming it in order to establish a mechanical interlock. The clamp body is machined with threaded holes to facilitate anchorage of PV modules or racking components to the clamp.

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Tags: Solar, Roof Clamps, pv modules, thermal movement, direct mount, PV array, rail mounted, rail less, solar PV, corrosion, maintain warranties, non-penetrating, load tested, UL Listed

   

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