Category Archives: Standing Seam Metal Roof Panels

Common Weather Related Myths — And The Facts About Standing Seam Metal Roofs

There are several myths about a standing seam metal roof when it comes to weather-related issues like lightning, hail and rain.

We’re going to explode those myths right here and give you some solid scientific information that we hope will help you in choosing a standing seam metal roof for your home.

First myth: Will a metal roof increase the likelihood of a lightning strike on your home?

The answer to this question is “absolutely not.”  Lightning will strike a very tall building over a shorter building, regardless of the building materials and roofing used.  It makes no difference if it’s a metal roof, a tile roof or asphalt shingle.  The real probability of lightning strikes has more to do with land topography, location of building and the size and height of a building. Continue reading

An Englert Metal Roof Covers a Piece of History in Vermont

Today’s blog is about a bridge -  A covered bridge in Vermont  with a standing seam metal roof on it and a community that came together to rebuild that bridge and restore its place in history .

On August 28, 2011, when the Williams River rose to historic heights during Tropical Storm Irene, the Bartonsville Covered Bridge, built in 1870, in the village of Bartonsville, in Rockingham, Vermont, lost its battle to the raging waters.  The swollen river eroded the banks on its south side damaging the bridge’s abutments.  When the abutments gave way the bridge separated from the banks and began gliding down the river. Unable to make a turn in the river, the 151-foot-long, lattice truss-style bridge collapsed in a pile on the shore about a half mile down-stream.Bartonsville covered bridge destroyed by Tropical Storm Irene

It wasn’t the first Bartonsville covered bridge to be victimized by a storm. It was built after the great Vermont flood of 1869 that changed the course of the Williams River, replacing another covered bridge about a quarter of a mile up the road where the river used to flow.

The raging Williams River had done its damage for the second time in 142 years. Continue reading

Design the Best Standing Seam Metal Roof for Your Projects in Asia, Make Sure the Coil and Roll Former are Western Made

The United States imported more than four times as many goods from China as we exported there last year.

But our trade imbalance with China has gone the other way when it comes to professional services. Professional services, including architecture, constitute roughly a third of America’s exports, according to Architect Magazine, which notes many major American architecture firms now have offices in the largest Chinese cities, such as Beijing and Shanghai, as well as second-tier cities like Tianjin.Metal Roofing Roll Forming Machine

However, if you’re one of those design firms and you’re specifying metal roofs in Asia, beware! The quality of metal roofing coil and the roll forming machines made there are often greatly inferior to coil and machines made in the U.S. and in Western Europe.

Our in-house machine expert, Mike Gorski, has had the opportunity to visit other continents and see the different roll forming equipment made in places like China, the Middle East and Africa.  Mike’s take?  Most of these machines are poorly made and have a life expectancy of only a few years. And Mike emphasizes there is little or no training for operators and no machine service support in these markets to fix a faltering machine. Consequently, the result often is a poorly made panel on a faulty machine. 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

Metal Roofing Contractors Can Avoid Cinching AKA Friction Scratches With These Simple Rollforming Tips

Cinching, sometimes also referred to as “friction scratches” or “pickoff,” is the result of the movement or slipping of painted coil laps against each other on a rollforming machine.

This phenomenon can be frustrating to metal roofing contractors because it causes the removal of paint in the shape of small or medium sized scratches on metal roofing coil formed in the same direction of the slipping or movement of the coil laps.

Some clear signs that cinching is the cause of these short longitudinal scratches are:
•    Worn or broken pieces on the spools, idler rolls and guides,
•    Gaps or air spaces between sections of the laps of the coil
•    The ability to move the laps of coil with hand pressure, a sure sign that coil has unraveled.

Cinched metal roofing panel.The vast majority of cinching incidents are caused by improper brake pressure on the un-coiler spool or the expandable arbor brake on the rollforming machine.  For portable roll formers, the improper brake pressure on the un-coiler spool is by far the source of most cinching. And new machine operators not familiar with the use of the brake or trained incorrectly are responsible for most of the problems.

To avoid cinching, the rollforming machine operator must make sure there is proper tension to allow the coil to uncoil without tightening the laps or without loosening the coil so it does not unravel. If either of these actions occurs, the laps will rub against each other and cause cinching. Continue reading

Standing Seam Metal Roofs: Always Look On The Bright Side of Life

Quick! What color is the standing seam metal roof on a Home Depot? Barnes & Noble? How about a Lowes Home Improvement store?

We’ll bet you knew all three of them-orange, green and blue. And not any orange, green and blue because each of those retail giants has a custom name for its colors. They know their colors play a key role along with signage to brand their companies and ultimately help customers identify and remember their stores in the great clutter of America’s malls and roadside retailers.Metal roof on IHOP restaurant.

They are not alone. Scores of fast food chains, national and regional gas stations, hotel chains and the like have signature color standing seam metal roofs that serve as beacons to customers. The color in essence becomes part of their brand.

Why? Because color possesses an inherent ability to stimulate an aesthetic consciousness simply by the visual satisfaction that it creates. Used intelligently, color and colored light can add distinctiveness and appeal to any project. Continue reading

Hurricanes and Mega-storms in the Northeast: Is it time to take a new look at the building codes?

Hurricane Sandy was the ninth such devastating storm to hit the Northeast in the last five years, and it raises the question “Will the impacts of climate change only make such storms worse.”

That region has had hurricanes and Halloween snowstorms.  So the questions must be raised–Are these coincidence or is climate disruption affecting this region and other parts of the country? And what do government, the insurance industry and private sector developers have to do to protect against future devastation?Sea Girt NJ During Hurricane Sandy

More than a decade ago in the wake of destruction of Hurricane Andrew, Southeastern elected officials, state, county and municipal engineers,  building department officials and the insurance industry finally bit the bullet and imposed stringent building requirements to thwart the impact of future storms.  The Florida Building Department and Miami-Dade County launched stringent building codes to ensure new construction could survive the high winds bred by hurricanes and tropical storms.  Other states and their counties and municipalities throughout the region began adopting the provisions of those codes as well. The result has been a significant reduction in damage in high wind situations. Continue reading

Now is the Perfect Time to Replace an Aging Flat Roof with a Retrofit Standing Seam Metal Roof System

Aging building stock and demands for energy efficient buildings makes now the perfect time to suggest a retrofit standing seam metal roof.

A sloped retrofit metal roof system incrementally extends the life expectancy of a building, reducing roof maintenance costs. It also improves its aesthetic and economic value and may even decrease insurance premiums inflated by past problems.Flat roof being retrofitted with metal roofing.

According to recent studies, about 25% of U.S. commercial, institutional and public buildings are now 55 years old or older. Right now, there is roughly 71.6 billion square feet of aging commercial buildings in America. With another 10.6 billion square feet in industrial space and more than six billion in pre-1980 school construction you’ve got more than 24 percent of all structures in the U.S. ready for renovation. In a tough economy, the need to refurbish and give new life to these buildings should be an architect’s dream.

Installing a standing seam retrofit metal roof system will eliminate the disruptive loss of business and building use that occurs if you replace the old roof with another flat roof. Continue reading

Sorting out the Necessary Test Requirements for Metal Roofing Projects

We know that the metal roofing tests and standards an architect must include in a project specification can sometimes be confusing.

For example, we see  some architects—and particularly designers new to the profession — specifying  ASTM E 1592  for a plywood or B-Deck and B-Deck with ISO when, in fact, 1592 is the test method for structural performance of a metal roof for open framing such as a purlin application.
Image showing fire testing of a metal roofing surface.
Often, we’ll see architects using a Factory Mutual test specification for fire resistance when first, an FM designation is really only for projects to be underwritten by Factory Mutual (FM) Insurance and second, the FM specification is far more stringent than the project requires and consequently will be a lot more expensive for the builder to meet.  Besides, Factory Mutual offers RoofNav, a simplified and very specific means of determining a roofing product’s and roof system’s compliance with FM Approvals’ guidelines and standards.

Some architects even submit metal roof specifications with information drawn word-for-word from the specs of an earlier metal roofing project that had similar requirements—but was not exactly the same.  This is a bad idea because the specification information often differs dramatically even though the projects seem similar.

How can architects and builders avoid these problems? Two ways…. 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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