Tag Archives: Roll Forming Machines

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

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

Manufacturing Metal Roof Systems More Efficiently On the Job Site With Portable Roll Forming Machines

Standing seam metal roof panels are formed for a project in one of two ways— directly at the job site using a portable roll former or off site at a factory and transported by truck to the job site.

When on-site portable roll forming first appeared on the scene more than 25 years ago, the sellers of factory formed panels saw the threat of losing business to metal roofing companies that formed the metal roof panels at the job site using portable roll forming equipment that provided greater flexibility and job control.  These in plant manufacturers began to make a lot of noise about the perceived disadvantages of on-site manufacturing.  Their unfounded claims were that on-site roll forming was too new and lacked a proven track record.   They focused a great deal of time and effort trying to disparage and eliminate the competition from on-site metal roofing fabricators.

Despite their great protestations, job site roll forming has thrived and millions of metal roofs have been installed using portable roll forming machines.  In fact, during the intervening years metal roofing projects completed using portable roll forming equipment have not received any more complaints than those projects that were completed using factory formed panels.  In many cases the advantages with respect to flexibility and increased job control resulting from the more efficient on-site roll forming process drew raves from GC’s, Architects and Building Owners.

Recently, times have been tough in the building industry—we all know that. And twenty five years later the sellers of factory-made panels are feeling the pinch and protesting again—from their factories, hundreds and sometimes thousands of miles from the job site where their roofing panels are being installed.

Twenty five years later, they’re still obsessed with the competition and still complaining about product reliability issues which were clearly never an issue in the first place. Meanwhile, job site roll formers have proven to have several distinct advantages over factory-made panels.

Unlike sellers of the factory formed panels, they don’t store piles of standing seam metal roof panels at the job site only to wait until other crafts have completed their work before roof installation can begin. They don’t leave panels exposed to inclement weather. They don’t have to worry about possible shipping and job site damage.  And they never have to worry that the panels will be too long or too short or that there weren’t enough panels manufactured and sent to the job site in the first place.


Conversely, job site roll formers are able to accommodate last minute changes in plans without waiting several days for the factory to take the order, make the new panels and ship them back to the job site.  Meanwhile, sophisticated roll forming machines allow contractors to punch in 50 different programs and get a series of different panel lengths in sequence.  Today’s contractors produce panel lengths in batches—without touching the unit.

Polyurethane drive rollers drive all materials up to 24 gauge steel through a machine with ease.  A wide variety of materials are run through the machine, with little or no adjustments.

The use of AutoCAD and CAD in the machine design process has resulted in shorter machines that produce finished panels and gutter systems in record time.

And… due to the resulting quality and efficiency more and more architects and GCs are turning to on site metal roof fabricators as the preferred choice to manufacture their clients metal roof systems.

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