Easy-to-Use Discs Enable Induction Welding of PVC and TPO Membranes Over EPS Insulations

With induction welding, the membrane is heat bonded to the top of each plate and there are no penetrations in the membrane. Photo OMG

Over the past ten years, North American roofers have begun to adopt induction welding as a fast, simple and secure way to mechanically attach TPO and PVC membranes. The method also helps create a high-performance roof assembly by eliminating fastener penetrations of the membrane.

For most of its history, induction welding was limited to installations over thermoset insulations such as polyiso or over other rigid insulations with a cover board. But now, a deceptively simple and easy-to-use disc enables roofers to use induction welding over expanded polystyrene (EPS) insulations that don’t have cover boards. The result is faster and more affordable insulation installation and lower fatigue for work crews.

The Induction Welding Method in Brief

A roof fastener manufacturer pioneered induction welding attachment as a way for roofers to streamline TPO and PVC membrane installation, while avoiding membrane penetrations, for a more watertight roof assembly.

A roofing technician seals the seam with hot-air welder. Photo: Insulfoam

In a typical mechanically fastened membrane system, roofers secure the membrane with 2-inch to 3-inch diameter plates on the seams held down by screws that pass through the membrane and insulation layers to the underlying deck. With the induction welding method, each plate becomes a fastening point for the membrane, and the membrane is heat bonded to the top of each plate. With this method, crews screw down the insulation layer as usual, then unroll the membrane over the insulation. They then place a stand-up or handheld induction welding tool on the membrane at each plate location. In less than five seconds, the tool heats the plate under the membrane to about 400 degrees Fahrenheit, bonding the membrane to the plate. Heating is accomplished via electromagnetic induction between the tool and the plate, rather than via direct application of heat (think of an induction cooktop compared to conventional stove heating coils). Induction welding meets the FM 4470 approval standard and is accepted by most membrane manufacturers.

Induction welding typically requires 25 percent to 50 percent fewer fasteners and plates than typical mechanically fastened installations, as well as fewer seams, resulting in both labor and material savings. As the fasteners are spread across the roof in a grid pattern, the resulting assembly enhances resistance to wind uplift and reduces membrane sheet flutter.

EPS Insulations and Induction Welding

Until now, the induction welding process could not be used with EPS insulations that lacked a cover board, as

EPS insulations can be used in both new construction and roof recovers. Photo: Insulfoam

the 400-degree heated plates caused the insulation to soften and draw back. This resulted in numerous depressions in the roof assembly (at each fastener location), where water could pond.

To enable use of the induction welding process with a broader range of rigid foam insulations, fastener manufacturers have developed a simple solution. For each fastener, crews place a thin disc between the fastener plate and insulation. This separation medium protects the EPS from the high heat of the induction welding process, without interfering with the bond between the membrane and the fastener plate. Manufacturers typically refer to these separators as “induction welding cardboard discs.” While they are paper-based products, calling them “cardboard” understates their performance, as they are densely compressed and have a moisture-resistant coating, so they work well in high-performance roof systems.

Why This Matters

For roofers who prefer using EPS insulations for the products’ thermal performance and ease of installation, the discs allow them also to achieve the benefits of the induction welding process discussed above.

Induction welding cardboard discs enable use of the induction welding attachment process for TPO and PVC membranes over EPS insulation. Photo: Insulfoam

While induction welding has always been possible using EPS insulation products that have standard cover boards, the discs make it possible to induction weld over EPS products with glass facers and fanfold EPS with polymeric facers. Glass-faced EPS products can be used in new applications and recovers while roofers typically use fanfold EPS in roof recovers.

Fanfold EPS bundles, like R-TECH FF and others, are available in standard sizes up to 200 square feet, comprised of 25 panels that are 2 feet by 4 feet each, and come in various thicknesses. A typical two-square bundle weighs less than 11 pounds, so it is easy for one person to carry. EPS fanfold bundles require fewer fasteners per square foot than most roofing insulations and are less expensive than virtually every recover board. The man-hours needed to install fanfold bundles are about 60 percent less than working with individual sheets. Material costs are also lower than wood fiber, perlite, or gypsum board. On large projects, the

Induction welding typically requires fewer fasteners and plates than mechanically fastened applications, resulting in both labor and material savings. Photo: OMG

total savings can add up to tens of thousands of dollars. As with other EPS insulations, the product’s light weight also means less crew fatigue.

As roofers look for ways to create cost-effective, high-quality roof assemblies, new methods provide the opportunity to boost the bottom line by reducing labor and material costs. A simple, affordable disc now enables you to obtain the benefits of both the induction welding method for fastening TPO and PVC membranes and the advantages of EPS insulations.

Retrofit Roof Drains Feature Integrated Vortex Breaker

OMG Hercules-Plus RetroDrainsOMG Roofing Products introduces a new line of retrofit roof drains called Hercules-Plus. The drains feature integrated vortex breaker technology. Vortex breaker technology helps improve drain performance by improving water removal off the roof.

According to the manufacturer, independent performance testing shows that Hercules-Plus RetroDrains provide up to 2.5 times greater flow capacity than original Hercules Drains without vortex breaker technology. Faster water flow off the roof also means that the drains get excessive weight off the roof faster. In addition, integrated vortex breaker technology greatly reduces the chugging effect that occurs when a vortex collapses, which can overload the plumbing system.

“Ponding water weighs approximately five pounds per inch per square foot. That means one-inch of water covering 20-square feet on the roof weighs 2,000 pounds,” said Dan Genovese, product manager with OMG Roofing. “That’s an additional ton of live load added to the building’s roof, and not entirely uncommon given the number of extreme weather events we’ve seen in the past few years. The new Hercules-Plus RetroDrains can get that water – and excessive weight – off the roof faster.”

Hercules-Plus RetroDrains are available in four sizes: 3 inches, 4 inches, 5 inches and 6 inches, and with an optional TPO or PVC coated flange for direct membrane attachment. Strainer domes are made of heavy-duty cast aluminum which will not rust for long life on the roof. In addition, the safety yellow powder coat makes the Hercules-Plus strainer domes highly visible to help minimize rooftop trip hazards.

For additional information, visit www.OMGRoofing.com.

OMG’s Douglas “Rocky” Woods Recognized as 2018 MVP by the Roofing Industry Alliance for Progress

OMG Inc. is proud to announce that the Roofing Industry Alliance for Progress has recognized OMG employee Douglas “Rocky” Woods as a 2018 MVP. Rocky was nominated for his performance in two categories: outstanding on-the-job performance and outstanding performance outside the workplace.

Regarding Rocky’s on-the-job performance, his most impressive accomplishment as an OMG employee is his 33-year safe driving record. Rocky was recognized by the National Safety Council (NSC) as the Northeast’s Regional Best Safe Driver of the Year in 2007, and he was one of only seven finalists for in 2008 for the UPS Joseph M. Kaplan Safe Driver of the Year award. Rocky has also been recognized as the company’s “Employee of the Month” for his willingness to go above and beyond and his positive attitude.

In addition to his performance at OMG, Rocky was also nominated for the MVP Award for his contributions outside of the workplace to the community. Rocky served our country in the United States Army, and recently became a Disaster Action volunteer with the American Red Cross. Following Hurricane Harvey, Rocky completed a two-week volunteer deployment in Houston and delivered supplies to California to support the Red Cross fire relief efforts.

“We are extremely proud of Rocky’s accomplishments both at work and in the community,” said Sarah Corrigan, vice president of human resources for OMG. “He serves as a great role model and this recognition is very well deserved. We are very happy to have Rocky as part of our team.”

For more information, visit www.OMGRoofing.com.

OMG Unveils Hoops Madness Promotion Tied to College Basketball Tournament

OMG Roofing Products has announced an innovative marketing promotion called OMG Hoops Madness, which is tied to the upcoming NCAA men’s college basketball tournament. Participants will compete for top prizes of $1,000, $750 and $500 during the four-week tournament. This follows the OMG Pick Six NFL promotion from this previous football season.

According to the company, the game is easy to play. Participants simply pick the winners of each game, with points awarded for correct picks. Individual games are picked as the tournament progresses, so there’s no requirement to pick the entire bracket before the first game is played. Players also have an opportunity to earn bonus points by answering questions about new products from OMG Roofing Products. The new OMG products include the OlyBond 15 Gallon Conversion Kit, OlyBond500 Canisters, PowerGrip Universal, RhinoBond Hand Welder, RhinoBond Plate Marking Tool, SpeedTite Drains and Hercules Vortex Breaker Dome.

There is no cost to play, and the promotion is open to commercial roofing contractors, commercial roofing distributors, commercial roofing specifiers, commercial roofing partners and OMG friends in the industry.To sign up, complete the short registration form at www.OMGHoopsMadness.com. Participants can jump into the tournament at any time during the March tournament but have the best chance to win an overall prize if they participate for the entire four-week event. The promotion begins on March 1, and the participants can make their first picks on Monday, March 12.

For additional information and complete rules, visit www.OMGHoopsMadness.com, contact your local OMG field sales representative, or call OMG Roofing Products at (800) 633-3800.

OMG Inc. Restructures to Drive Innovation and Continued Growth

OMG Inc. has announced plans to implement a new corporate structure to position the company for continued growth. As part of this transition, OMG will create several small, more agile business units within two existing divisions. Each business unit will be fully responsible for executing strategy as well as profit and loss. The leaders of the business units will report to senior vice presidents responsible for setting overall strategy for long-term growth.

“The new organizational structure encourages product innovation within each business unit, which we believe will stimulate growth and enable us to better meet the changing needs of our customers and the markets we serve. It also creates opportunities for individual employee development and strengthens our leadership bench, both critical to our continued success,” said Hubert McGovern, president and CEO.

Within the OMG Roofing Division, the three new business units are Metal Accessories (which includes OMG EdgeSystems), Adhesives/Solar (which includes OlyBond Adhesives and OMG PowerGrip Solar Attachments), and Fasteners (which includes all roofing fasteners, as well as the RhinoBond and AccuTrac systems).

The two new business units in the FastenMaster Division are Decking (which covers all decking and trim fasteners including the Cortex Hidden Fastening and Tiger Claw Hidden Deck Clip systems, and Flex Hot Melt Adhesives) and Structural (which includes the Lok Line of structural fastening solutions as well as the PAMFast AutoFeed Screw System).

As part of the announcement, the company also announced several leadership changes. John Ashe has been promoted to senior vice president for the FastenMaster Division and will manage the new business unit leaders, the executive sales and marketing team, as well as new product development. Ashe’s team will include John McMahon, who has been promoted to vice president of the new Decking Business Unit.

An essential goal of the new structure is to drive innovation. As such, OMG has appointed two experienced business leaders to critical new roles in product development. Josh Kelly was named vice president of new product development and innovation for OMG Roofing Products, and Tim Gillis was named to the same role for FastenMaster. According to the company, both Kelly and Gillis have demonstrated a passion for product innovation throughout their careers, driving growth through new technology development and commercialization in their respective markets. They will be working in tandem with Tad Weiss, who has been named director of research and development and will focus on manufacturing technology and material science. Additionally, on the roofing side, Web Shaffer was named as vice president of the new Fastener Business Unit.

Other key changes announced include Dewey Kolvek’s promotion to senior vice president of operations, and Sarah Corrigan’s promotion to vice president of human resources and environmental, health & safety. Both are taking on additional responsibility for strengthening the shared resources that support each division and its business units.

“We are taking significant steps to make us rethink and improve the way we do business,” said McGovern. “While we continue to meet existing business demand, we will implement change strategies that create long-term value for our customers and the company.”

For more information, visit www.OMGInc.com.