Category Archives: Metal Roofing

Englert Introduces New Mobile App

Englert is pleased to announce the development of a new mobile Roofing App for Apple and Android devices.

Englert Inc mobile app for iOS devicesThis new App contains easy to access PDFs of all Englert brochures and catalogs as well as a section that displays all of the standing seam metal roof panel profiles and simulates how each profile is installed using very vivid animation.

In addition the new App includes an easy to use color selector for both roofing and gutter colors allowing the user to click on each color to see a larger version of the color swatch along with an explanation of which materials the colors are available in.

The Apps are available in the Apple store and also in an Android version.

For more information on Englert products please feel free to contact your local Englert Rep or visit the Englert website at www.englertinc.com

Steel and Aluminum—Two Great Metal Roofing Materials, Each Have Their “Strengths”

If you are a designer or builder considering a standing seam metal roof you may be asking the question what is the difference between aluminum and steel as a choice for the metal roof.

Commercial and residential metal roofing is primarily made of steel or aluminum. Both products are initially produced in giant rolls at a mill. All steel roofing has a protective barrier on both sides of the sheet called a metallic coating which protects against rusting. This is underneath and separate from any paint which imparts color to the product. There are two types of metallic coatings used: galvanized, which uses 100% Zinc in various thicknesses depending upon the product usage, and Galvalume, a mixture of aluminum and zinc. These metallic coatings “sacrifice” themselves to protect the iron in steel from oxidation when exposed to air and moisture. Zinc is a more “active” metal than iron so it oxidizes first and forms a protective barrier — zinc oxide, before the iron in the steel can become Ferric Oxide (rust). When zinc is combined with aluminum to form Galvalume there is even more protection in most circumstances.Metal roofing coil in various colors.

Steel residential roofing is made in thicknesses designated by gauge and is generally 24 to 26 gauge, with the higher gauge being thinner than the lower. These gauges are appropriate since most residential metal roofing applications are over a solid substrate. Aluminum residential metal roofing is designated by decimal thickness and ranges from .023 to .040 thickness.

Steel and aluminum both perform well as a metal roofing material. However, aluminum roofing, depending upon the exact product chosen, can run up to 20 percent higher in price compared to steel roofing. Continue reading

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

What Contractors Should Know When Buying Metal Roofing Coil

Contractors looking for a good deal on galvanized steel and aluminum roofing coil should always be careful—if it looks too good to be true then it probably isn’t.

There are some tools and “rules of thumb” for them to be sure they’re at least getting what they paid for.

Contractors order metal roofing coil by the square foot and most, in turn, charge their clients the same way.

So the number of square feet a coil is going to yield will dictate how much they are going to pay and how much they are going to earn.

There are a few unknowns in the process. Let’s use 24 gauge steel coil as our example. One coil of 24 gauge material can be different from another. That’s because industry standards permit “tolerances” in what constitutes a 24 gauge thickness. For example, we’ve know of one widely used “standard” that allows the thickness of 24 gauge galvanized steel to be anywhere from .0236 to .0316 inches thick. We know another one that only allows it to be from .0236 to .0296. A lot of contractors know this and realize that the yield of a coil may differ to some degree based on those tolerances. The only way to figure how many square feet the coil will accurately yield is to use a micrometer to measure the thickness of the material. And only a handful of large contractors and distributors have micrometers. Continue reading

New Solar Thermal Technology Saves Install Labor and Boosts Heat Output from Solar Thermal Standing Seam Metal Roof Systems

In an earlier blog this month, we talked about rooftop solar systems integrated with standing seam roofs.  We noted that the most widely employed rooftop solar technology isn’t electric, it’s solar thermal for heating air and hot water. We discussed four different systems, including an under the roof technology that takes heat from the metal roofing components and heats a water/glycol mixture that is circulated through cross-linked polyethylene tubing attached to a structure of purlins that are laid down piece by piece across the roof sheathing.Solar Thermal Install Thermal Lock Module

Well, since our blog appeared, a new under the roof technology has been emerging that uses the same heat principal but eliminates a lot of the manual labor, time and cost using the old system.

Known informally as the thermal lock module, this new under-the roof-system replaces complex 300 to 500 foot warrens of interlocking components of purlins, tubing, insulation material and aluminum foil with four by eight foot modules factory-fabricated and ready to install. Each module is 1 ½-inch thick and is connected to another by a simple coupling, eliminating a lot of the components and labor needed to install older systems.

The modules are installed as quickly as you would install a piece of plywood sheathing on a roof. It takes less than five minutes to couple them together.

There’s no need for the foil or foam and the system’s creator contends the new glycol system harvests two to three times more BTUs than the older glycol-based ones. In a recent in-plant test with 40 gallons of water, the creators say a single module was able to heat the temperature of the water from 50 degrees F in the morning to 105 degrees F in the afternoon. The new system must still undergo testing at the SRCC™, the non-profit organization which provides authoritative performance ratings, certifications and standards for solar thermal products required in most government and many commercial solar contracts. And its producer will only provide the factory made modules with plans to connect them to a manifold. But a certified solar installer must hook it up to the heating system.

Nonetheless, it appears to be a major step forward in under the roof solar thermal technology and one worth watching for architects, contractors and builders interested in marrying standing seam metal roofs with solar thermal installations.

Solar Thermal and Standing Seam Metal Roof Systems: Perfect Together

There’s been a lot of talk recently about solar photovoltaics being used with metal roofing. We’ve certainly done our share of explaining it—even have a PV system installed on our company roof.

But perhaps the most widely employed rooftop solar technology isn’t electric, it’s solar thermal for heating air and hot water. First, because it’s a lot less expensive to install and second, the payback is excellent.

Passive Solar Thermal System Under Metal RoofingSolar thermal water heating technologies rank among the simplest and oldest solar energy applications—hence they are the most cost efficient means of saving energy costs.

Four solar thermal technologies actually utilize the roof structure. Two of them –the evacuated tube technology and the flat plate collector—use the roof solely as a mounting system. But neither is reliant on the roofing surface for solar absorption. Two other systems employ under-the-roof solar thermal technology, using the standing seam metal roof as a critical component both for its solar absorption and as a means of protecting and prolonging the life of the system. Air-based solar thermal systems capture solar heated air and transfer it to the domestic water supply. Although air collectors are not quite as efficient as liquid collectors in heating water, the systems are simpler and require less maintenance than glycol water heaters. An air collector solar water heater uses the same type of differential control as a liquid system, but the differential is usually higher to account for the lower heat capacity of air. Continue reading

Fact: On-site Roll Forming Machines Have More Versatility Making Metal Roofing Panels Than Factory-Based Panel Equipment

The producers of factory made standing seam metal roofing panels—people who take an order, run the panels off on a roll-forming machine in a factory building and then load them on a truck to be delivered to the place where they will be installed—have been revving up their myth-making machines about onsite roll-forming again.

The Myth? On-site roll-formers cannot make standing seam metal roof panels from 22 gauge steel and .040 aluminum.

The Fact? On-site roll-formers have been making metal roof panels from 22 and .040 gauge material for more than a decade.Portable roll forming machine producing metal roofing panel

For example, Englert’s MetalMan Multi-Panel Roofing Machine runs virtually any size and gauge, including 22 gauge steel and .040 aluminum to ten panel configurations with minimum adjustments and less scrap.  A trademark feature of this roll-forming machine is that its rollers can be changed out by only one man in 30 minutes so that a new profile can be run immediately on the job site. Englert roll-forming machines are not the only machines in the marketplace with the ability to manufacture panels on the job site. Other manufacturers of on-site roll-formers have had the capability to run panels from 22 gauge, 040 aluminum and even 16 ounce copper for just as long. If your job is specified for heavy gauge material, you can manufacture the roofing panels with an on-site roll-forming machine and have greater flexibility. Continue reading

CHOOSING STANDING SEAM METAL ROOF COLORS TO MATCH YOUR NEW HOME’S EXTERIOR WALLS

You’re working with an architect to design your new home or renovate your current one. You’ve got the interior design worked out. And now it’s time to choose exterior wall colors and the color of your standing seam metal roof.

You want to be happy with your choice every time you pull into your driveway.  And you’re keenly aware that a well-coordinated exterior will add curb appeal and value to your home.Choose a metal roof color that compliments your siding.

Ultimately, you’ll make the choices that best suit your sense of taste and color preferences. But if you’re looking for ideas, here are some suggestions you might consider.

In a recent blog, we took a look at the standing seam roof colors 6,000 Englert customers had chosen for their new home or home renovation projects last year. And several colors clearly emerged as winners. Based on those results, we’ve researched certain color palettes and matched them with presently popular exterior wall colors and surfaces here in the United States. However, if you’re one of those adventurous homeowners who loves a brighter palette (I’m like you), then you may not find what you’re looking for here. But you’ll always be able to find bright blues, metallic coppers or even order a custom color to satisfy your tastes. Continue reading

Standing Seam Metal Roofing: The Lightweight Material That Pulls a Lot of Weight with the Competition

Quick! Which gauge of metal roofing material is thicker? 29 gauge or 22 gauge?

If you chose 22 gauge, you picked the right number because in the world of metal measurement, the lower the number of the gauge, the thicker the material.

So, if your contractor tells you he’s going to order a 26 gauge standing seam metal roof for your house, he’s picked the most common roof thickness for a metal roofing system in America today. If he tells you he’s picked a 29 gauge material, ask why. Most metal roofing companies require a 24 gauge or better to ensure the roof will be suitably impact resistant.Worker installing solar panels on standing seam roof.

That’s because impact resistance is one of the features that make it superior to other forms of roofing materials when weather and other aspects of Mother Nature come into play. How does its strength shape up against other roofing materials?

Well, measuring the flexural strength of asphalt shingles or even terra cotta tiles is a difficult task at best and a potentially pointless exercise since roof shingles do not provide weight support for a roof—just weather protection.  In fact, their manufacturers do not provide flexural strength information knowing this.

On the other hand, metal roofing materials have excellent tensile strength. For example, stainless steel roofs have been tested at 80,000 pounds of pressure per square inch. Galvanized steel comes in at 50,000 psi, copper at 36,000 psi and even lightweight aluminum rates 22,000 psi. Insurance companies know this and will often offer discounted premiums to homeowners with a metal roof. Nonetheless, heavier gauge does not necessarily mean better performance. Product design and manufacturing, quality of coatings and installation expertise can mean the difference as well. Continue reading

Free Englert Roofing Mobile App Download:

Easy access to all Englert brochures and catalogs, a color selector for both roofing and gutter colors, standing seam metal roof panel profiles, and a convenient coil calculator to assist in estimating and completing your particular project.

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