Tag Archives: snow guards

Design Your Standing Seam Metal Roof for Optimal Performance in Cold Weather Climates

If you’re planning on installing a new standing seam metal roof and you live in a cold weather climate with snow, keep in mind some design considerations that, in the long run, are sure to protect you against problems with snow and ice accumulation and removal during the winter months. Here are some tips:

  • Choose a design with a cold roof. Keep the entire roof as cold as the eaves. Ventilating the underside of the roof, insulating the attic floor, and plugging air leaks are usually the answer.
  • Consider a roof color with a high solar absorption value that will help thaw snow and ice.  Colors such as bronze, brown, or dark gray versus white or light earth tones will help do the trick. Continue reading

Snow Loads A Real Safety Issue In Winter of 2014 – May be Time to Consider A Metal Roof

Looking for another reason for considering a standing seam metal roof system – well check this out?

Over a 36-hour period in Massachusetts last month, there were more than 70 reports of roof collapses or buildings with potential structural damage from the weight of snow and ice loads on roofs.  The majority took place in eastern Massachusetts but they could have been almost anywhere in the continental United States given the severity of the weather we’ve been experiencing.Snow load collapsed roof

In many instances, homes and businesses were evacuated as a result of collapses or safety concerns resulting from indications of structural weaknesses from rooftop snow loads.  These conditions are directly attributable to prolonged cold weather and repeated snowstorms punctuated by short periods of rain that are absorbed into the snowpack adding more weight.  The threat can be alleviated by removing the rooftop snow on homes and commercial buildings.  That’s one short term solution. Continue reading

Architects’ Notes: The Differences Between Galvalume And Galvanized In Metal Roofing Projects

Englert’s nationwide team of architectural sales reps spend a considerable amount of time each year counseling architects on which standing seam metal roofing products and profiles might work best for their design projects.  One of the questions most frequently asked by architects is: What are the differences between  Galvalume and Galvanized Steel when used in roofing. It comes up so often, we thought we’d take a few minutes and use this week’s blog to explain those differences.

First, a little bit of background. Galvalume® was invented by Bethlehem Steel in 1972. It is a trademarked name, but many people use it as a generic term to describe a metal roofing product consisting of  steel coil coated with a metal alloy. That alloy is 45% zinc and 55% aluminum and looks similar to galvanized steel, but the visible crystals are smaller and close together, giving it a smoother appearance.  Galvalume has a cousin, Galvalume Plus. The only difference is Plus has a thin, clear acrylic coating. Because Galvalume Plus can be roll-formed dry without vanishing oil, it is very easy to form and install safely.Galvalume metal roof peak with snow guards.

The combination of zinc and aluminum in Galvalume enhances both the positive and negative effects of aluminum.  Galvalume has barrier corrosion resistance and heat resistance similar to aluminized material and good bare edge galvanic protection and forming qualities like galvanized material. Consequently, Galvalume  and Galvalume Plus will resist rust, the elements and fire while providing a sturdy and protective covering.

Galvalume® is more corrosion-resistant than galvanized steel, but because aluminum provides barrier protection instead of galvanic protection, scratches and cut edges are less protected.  Galvalume is offered in both bare and pre-coated versions. Most Galvalume®–like galvanized steel– is coated. But Galvalume has an excellent performance life in bare exposures as well.  Both galvanized steel and Galvalume® weigh 100 to 150 pounds per 100 square feet and contain about 35% recycled materials. The cost of Galvalume and Galvalume Plus are about the same as that of galvanized steel. Continue reading

Got A Metal Roof —Time to Think About Snow Guards… And Not Just For the Snow

Winter is just around the corner and in locations that see heavy snow; metal roofing has always been the choice of homeowners for years.  Its smooth coated surface sheds snow faster than other kinds of roofing materials, inhibiting snow buildup and protecting the structural integrity of the roof.

If you are designing in areas with heavy snow accumulation, then you’ll also probably want to think about the use of snow guards and snow rails to control the shedding of snow from the roof.

Snow guards on curved metal roof.There are plenty of different kinds of snow guards and rails out there designed for use with standing seam metal roofing products.  The most effective seems to be the systems that are mechanically attached with brass or aluminum clamps using round-point setscrews that will not “pin” or “fix” the metal roof panels to the building.

Snow guards can even enhance the aesthetic appearance of the building, offering  colors and finishes matching standing seam metal roofing panels and coated to last as long as the roof itself.

If you are considering a snow retention system on your metal roof then get one designed and engineered on a site-specific basis. They’re made for your roof and they will also carry a performance guarantee.

Mechanically attached snow guards are about six times stronger than adhesively-mounted devices that can degrade with time and exposure.  In addition mechanically attached guards require less time and labor expenses than soldered snow guards.

And just when you thought snow guards were just for snow, we’ve found some enterprising architects who have found some interesting uses for these kinds of guards and rails not even remotely associated with snow! Continue reading

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