Students Take the Lead on Roof Restoration Project

NTEC Systems applied a high-solids silicone coating

NTEC Systems applied a high-solids silicone coating. The system was chosen because it would extend the life of the existing roof and cut utility costs for the building. The system was approved for a 20-year warranty.
Photos: NTEC Systems

Thomas Portaro is the owner of NTEC Systems, a company headquartered in Alpharetta, Ga., that specializes in roof restoration projects. Portaro owns the company, but on a recent project on the campus of Georgia Tech, it was definitely the college students who were in charge.

Portaro was contacted by students who were researching different roof systems as part of a class project. Members of the class had been tasked to come up with ways to reduce carbon dioxide emissions on the school’s Atlanta campus.

Students were exploring all sorts of environmentally friendly building systems, including LED lighting and HVAC equipment. One group of students explored various building envelope modifications, eventually narrowing their focus to the roof system.

“This particular group of students showed the school and their professors how they were going to reduce carbon emissions and the energy footprint of the O. Lamar Allen Sustainable Education Building by doing a roof restoration,” Portaro said.

Photos: NTEC Systems

Photos: NTEC Systems

Portaro, a Georgia Tech graduate, was contacted by the group to provide some insights on the potential benefits of coatings. “I was asked to come down to the campus and give a brief lecture on the values of roof restorations, the types of coatings I was familiar with, how they were applied, and how they could restore this particular roof.

The building was built in 1998, and its roof was the original modified bitumen system. When students learned how a cool roof system would extend the life of the roof and save on utility costs for the building, they not only presented their findings to their professors but officials at the university. The school ultimately decided to fund the project.

NTEC Systems completed the installation of a high-solids silicone roof coating manufactured by GE. “The students pioneered all of this,” Portaro says. “This is an amazing group of kids. To be invited back to my alma mater and to execute this project really hit a chord with me. The project really worked out well, and it was really cool because I got a check from Georgia Tech. Think about all of the money I’ve paid them over the years. It was nice to get a little bit of that money back.”

Practical Application

One key concern for the university was achieving a 20-year warranty, so the first step was to ensure that the existing roof was compatible with the system. “One of the big value adds of GE Performance Coatings is that their tech side is very strong,” Portaro notes. “GE has great specifications, and they make it pretty simple for me as an engineer to go up and evaluate a roof and make sure it meets certain criteria. You have to evaluate each roof to ensure it meets the criteria for a restoration.”

“A great phrase—and I forget who coined it—is, ‘We do roof restorations, not roof resurrections,’” Portaro continues. “The existing roof has to be in a restorable condition.”

Georgia Tech funded a roof restoratio

Georgia Tech funded a roof restoration for the O. Lamar Allen Sustainable Education Building after a student project detailed the energy-saving benefits of a cool roof coating.
Photos: NTEC Systems

Infrared analysis was conducted to ensure the roof system was dry. Some minor repairs were needed, but overall the modified roof was in good shape. It was cleaned with pressure washer and primed with an asphalt bleed-blocker from GE Performance Coatings. NTEC crews then spray-applied two coats of GE Enduris 3502 high-solids silicone roof coating to a minimum thickness of 40 mils when dry. The system forms a monolithic coating that is self-flashing. “We detailed it all out, the inspectors inspected it, and at the end of the day it was all done, the 20-year warranty was in place, and everyone was happy,” Portaro says.

He points out that the GE silicone coatings rarely require a primer. “This is the only type of roof that requires a primer, and the only reason it does is that asphalts tend to bleed through silicones and can tobacco-stain them,” he notes. “It’s aesthetics—that’s it. The GE system is one of our ‘tried and trues’ in part because for 99 percent of the roofs we do, it’s a primerless system. So, we save that step, which saves us time and ultimately saves the owner money.”

NTEC Systems excels at large, high-volume jobs, and the company is always looking for tools to make it more productive. “We are highly automated here,” Portaro says. “That’s our strength. It’s what we do. We have the ability to do a ton of square footage in a short period of time because we have the latest and greatest machinery. We’ve actually created our own method of going from ground to roof and getting coatings spray applied.”

The company has modified some industrial machinery to move large volumes of high-solids silicone under control, according to Portaro. “Now, it’s not robotics,” he explains. “It still takes artistry. It still takes an expert pulling the trigger. We have guys that are very talented, and now the machinery is keeping up. We can do four or five times as much work in a day as we used to do just a few years ago. Our production levels have blown up.”

A Learning Experience

Photos: NTEC Systems

Photos: NTEC Systems

One of the challenges on this project was taking the time to use the application as a teaching tool. “The students were there the entire time,” Portaro remembers. “We were surrounded by some of the smartest people in the world. I’ve never had so many managers on a project in my life. These students brought a passion to the building industry like you’ve never seen before. They believe they are going to change the world, and they probably will.”

Portaro also shared his passion for environmentally friendly roof systems. The students apparently took that message to heart. “These kids are something special,” he says. “They went to Washington, D.C., to present this project to the Congress of the United States. These kids weren’t happy with just affecting one building on the campus of Georgia Tech. They wanted to share the story. This project got national recognition. I was really proud of these kids, who I met for the first time on this project. My hat’s off to them.”

Portaro has installed a lot of cool roofs, but the Georgia Tech project was special. “This was certainly the coolest project I’ve ever done,” he says.

Kemper System Features Cost-Effective ‘Cool Roof’ Solutions

Kemper System America Inc. now offers two cost-effective ‘cool roof’ solutions for prolonging the life of metal, BUR, modified bitumen and aged single-ply roof systems.

Roof Guardian RG-170 is an elastomer-based coating system ideal for extending the life of many types of roofing assemblies. Formulated using a 100 percent acrylic polymer base for enhanced adhesion and durability, the coating features a high Solar Reflectance Index (SRI) rating of 109 and is Class A fire rated. Roof Guardian RG-180 is a fiber-reinforced elastomeric coating with an acrylic polymer base, ideal for metal, concrete, single ply, modified bitumen, and granular cap sheets. It offers an SRI rating of 108.

“Kemper System has been at the vanguard of liquid-applied roof waterproofing solutions for decades. These two new white Roof Guardian coating systems offer a quick and cost-effective approach for transforming many kinds of existing low-slope roofs into a cool roof that can help building owners cut cooling costs,” says Jim Arnold, Director of Product Development for Kemper System.

Part of the company’s Roof Guardian Technologies line, the roof coatings can be quickly applied with a commercial-grade sprayer or roller. The highly reflective bright white finish lowers the surface temperature of the substrate to reduce thermal transfer into the structure. This high solar reflectance helps lower indoor temperatures to reduce building cooling requirements.

Formulated to resist cracking and peeling, both products provide excellent waterproofing and long-term mildew resistance. Both solutions are Energy Star and Cool Roof rated.

“For more than 60 years, Kemper System has been a global industry leader in cold liquid- applied, reinforced roofing and waterproofing, having invented the technology and holding the first patents,” says Arnold. “Today the company offers a full range of building envelope solutions to protect against weather, preserve the integrity of surfaces, and enhance the comfort and value of buildings.”

This portfolio encompasses Wall Guardian fibered acrylic air barrier, Roof Guardian Technologies elastomer-based roof coatings, and HeatBloc-ULTRA radiant heat barrier. Other high-value brands include COLEAN traffic coating systems, and the company flagship for exterior and interior waterproofing, Kemperol reinforced membrane systems.

LEARN MORE

Visit: Kempersystem.net
Call: (800) 541-5455
Email: inquiry@kempersystem.net

Reflective Granulated Cap Sheet Is for BUR Systems

The reflective granulated cap sheet may be used as a cap or flashing sheet in built-up roof systems.

The reflective granulated cap sheet may be used as a cap or flashing sheet in built-up roof systems.

Johns Manville has introduced a highly reflective granulated cap sheet called GlasKap CR G, which may be used as a cap or flashing sheet in built-up roof systems. The CR G membranes are surfaced with white reflective minerals and can be installed using standard granulated cap sheet installation methods. GlasKap CR G joins the larger offering of JM cool roof membrane solutions. These products are approved by FM Global and UL. They are also listed with CRRC and meet current Title 24 requirements. GlasKap CR G provides an additional option for customers who want a reflective cap sheet as part of a reliable BUR system.

Kemper System Will Showcase Liquid-Applied Protective Solutions at IRE

Kemper System America Inc. will showcase a range of cold liquid-applied protective solutions for the building envelope at the International Roofing Expo (IRE) in Las Vegas, March 1-3, and demonstrate product application at booth 217.

Kemper System protects surfaces across the globe. Solutions to be featured at IRE include:

  • Two fully reinforced membrane systems that can transform roof decks into reflective cool roofs, or provide monolithic protection for green roofs, blue roofs, and a range of other projects.
  • Two new coatings systems for protecting surfaces prone to heavy wear such as parking garages, balconies and walkways.

Waterproofing Membrane Systems

The two reinforced waterproofing membrane systems are cold liquid-applied and ideal for cool roof applications:

  • Kemperol AC Speed FR system is a Polymethyl Methacrylate (PMMA)
  • Kemperol Reflect 2K FR is a low-VOC system

Both are fire rated for Class A assemblies and exceed LEED solar reflective requirements with SRI ratings of 108 and 110, respectively.

Durable Wear Coatings

For protecting parking garages, pedestrian decks, and loading docks, the COLEAN Parking System can withstand deterioration caused by natural elements and vehicular traffic. In addition, the COLEAN Balcony System, which is designed to expand and contract with normal structural movements, protects balconies, terraces, walkways, patios, sun decks, and machine rooms from freeze/thaw damage and chemical exposure.

Kemper System America also offers a way to prolong the life of existing roofs with elastomer-based coating systems, one of four technologies added through the acquisition of STS Coatings Inc. in December.

“Our building envelope solutions go beyond roof waterproofing to make the building specifier’s job easier. These solutions create opportunities for contractors and value for building owners,” says Richard Doornink, president and managing director of Kemper System America Inc.

For over 60 years, Kemper System has led in cold-liquid applied, reinforced roofing and waterproofing, having invented the technology and holding the first patents. Today the company offers a range of building envelope solutions to protect against weather, preserve the integrity of surfaces, and enhance the comfort and value of public buildings and commercial real estate.

Visit IRE booth 217 to learn more, or contact Kemper System at inquiry@kempersystem.net, or call 8(800)541-5455.

Kemper System Celebrates 60 Years Building Envelope Solutions

Kemper System is celebrating 60 years of success and building on its strengths to address the entire Building Envelope.

“Kemper System was built on novel approaches to challenges, product quality and customer service, and those continue to be the bedrock of our relationships,” says Richard Doornink, president and managing director of Kemper System America Inc. “Our role is to help architects and other specifiers find the balance between often competing goals on projects across the Building Envelope. The right technology makes those choices easier,” he states.

Today, the company offers an expanded range of Building Envelope solutions to protect against weather, preserve the integrity of surfaces and enhance the comfort and value of public buildings and commercial real estate.

As part of the company’s expansion efforts, Kemper System America acquired STS Coatings Inc. in December along with four flagship brands, and is exploring additional technologies to build its portfolio, Doornink stated. In addition to the technologies from STS Coatings, this encompasses Kemperol reinforced membrane systems, and COLEAN durable coatings systems for protecting surfaces prone to heavy wear.

Technology Roots

Kemper System traces its roots to polymer chemist Heinz B. Kemper, Ph.D., who founded the original company in 1957 after developing a roofing system using a cold liquid-applied resin reinforced with polyester fleece. After conducting over 200 trials, in 1969 he patented Kemperol V210, a reinforced membrane system which proved to be effective, and could stand up to sun, rain, snow, ice and standing water longer term.

That led to further advances in cold, liquid-applied membranes including the company’s flagship solvent-free and odor-free Kemperol 2K PUR membrane system, launched in the U.S. in 1999, and more recently, Kemperol 022 reinforced waterproofing system for indoor tile, and fire-rated Cool Roof systems – the odor-free Kemperol Reflect 2K FR and fast-curing Kemperol AC Speed FR.

Today, Kemper System products protect surfaces under a range of climatic conditions spanning: new and existing roofs, white roofs, green roofs, blue roofs, interior and below-grade waterproofing, parking garages, balconies, terraces, plazas and historic restorations. In North America, Kemperol membrane systems protect projects including the Empire State Building in New York, CN Tower in Toronto and Marketplace Tower in Seattle.

Kemper System America Inc. is a wholly owned subsidiary of Kemper System GmbH & Co. (KG | Holländische Straße 32-36 | D-34246 Vellmar). Kemper System is part of the IBG Group of companies, a mid-sized industrial holding company with more than 50 sales and distribution sites, as well as production companies all over the world.

Boral Roofing Concrete Roof Tile Is Featured on Remodeled Home

Boral Roofing LLC, a provider of sustainable clay and concrete roof tile systems, has announced that its Boral Cool Roof System will be featured on the 2017 New American Remodeled Home. Located in Lake Nona in South Orlando, the New American Remodeled Home is a joint collaboration of “Professional Builder” magazine, National Association of Home Builders (NAHB) and builder Phil Kean Design Group. The project exemplifies how an existing home may be improved in design, livability and energy efficiency and will showcase Boral Roofing’s Saxony 900 Slate concrete roof tile.
 
“One of the benefits of the Boral Cool Roof System is its energy efficiency performance,” says Rich Thomas, product manager for Boral Roofing. “While providing long-term energy savings to the building owner, our roof tile is also durable with curb appeal.”
 
The Boral Cool Roof System to be featured on the home includes a number of key components including the Saxony 900 Slate roof tile, elevated batten system, vented eave risers and ridge vent. The system’s elements work together to both protect the home from the elements and to conserve energy and prevent temperature fluctuations within the home. These energy efficient qualities reduce heating and cooling demands and provide energy bill savings for the lifetime of the roof.
 
Saxony 900 Slate is designed to complement both French and Tudor architectural styles and fully captures the appearance of natural slate. The roof tile requires minimal maintenance and is Class A Fire rated. The roof tile replaces the original tile roof put in place when the home was built in 1987. Premier Roofing completed the installation of the roof tile.
 
“The Boral Cool Roof System will assist in improving the overall performance of a building,” adds Thomas. “It will also help the building visionaries update this home to address the architectural design trends of the future.”

Cool Roof Solution Is Fast-Curing

The Kemperol AC Speed FR system is a fast-curing, cold liquid-applied cool roof solution with a Solar Reflective Index rating of 108.

The Kemperol AC Speed FR system is a fast-curing, cold liquid-applied cool roof solution with a Solar Reflective Index rating of 108.

The Kemperol AC Speed FR system from Kemper System America Inc. is a fast-curing, cold liquid-applied cool roof solution with a Solar Reflective Index rating of 108. The system includes a two-part liquid-applied Polymethyl Methacrylate (PMMA) resin and a reinforcing layer; these components form a fully reinforced monolithic membrane. The resin cures in a matter of minutes, and the system does not require a topcoat, which reduces installation time and the cost of labor. In most cases, application can be completed in a day’s time. The fully reinforced membrane system can withstand battering from extreme sunlight, wind and precipitation. It fully adheres to substrates and is self-terminating and self-flashing.

Modified Bitumen Membranes Adhere to a Variety of Substrates

SA-APP KoolCap and SA-APP KoolCap FR modified bitumen roofing membranes adhere to a variety of roofing substrates.

SA-APP KoolCap and SA-APP KoolCap FR modified bitumen roofing membranes adhere to a variety of roofing substrates.

Mule-Hide Products Co. has made available SA-APP KoolCap and SA-APP KoolCap FR modified bitumen roofing membranes, which adhere to a variety of roofing substrates. The products deliver the safety and ease of self-adhering application, long-term performance and durability, as well as the benefits of a cool roof. Complementing the membranes is the new SA-APP KoolCap Touch-Up Kit for treating lap areas, details and repairs. The granular-surfaced cap sheets are manufactured using a patented dual-compound technology in which a true APP polymer modified asphalt compound is applied to the top, weathering side and a proprietary adhesive formulation is applied to the bottom surface.

Complete Cool Roof System Extends the Service Life of New and Existing Roofs

Rhino Linings released a complete cool roof system engineered to improve building energy efficiency while extending the service life of new and existing roofs.

Rhino Linings released a complete cool roof system engineered to improve building energy efficiency while extending the service life of new and existing roofs.

Rhino Linings Corp., a manufacturer and distributor of spray-on protective linings, coatings and foam, released a complete cool roof system engineered to improve building energy efficiency while extending the service life of new and existing roofs.

The DuraTite spray polyurethane foam (SPF) roofing system holds a UL 790 Class A fire rating and is designed to provide a lightweight insulation system over various roof constructions and configurations. Unlike traditional roofing methods, DuraTite SPF roofing system offers a high R-value for superior thermal insulation, covers complex geometrical shapes and protrusions and applies directly to existing substrates in new and retrofit applications.

In addition to DuraTite SPF roofing system’s high-performance, it also offers significant life-cycle cost savings. An SPF roofing system is seamless and requires little-to-no maintenance. Roofing topcoats, like DuraTite acrylic, silicone, urethane and polyurea coatings may be reapplied numerous times, increasing the life of the roof.

The complete system combines spray foam with a full range of acrylic, silicone, urethane and polyurea coatings for a total roofing system that insulates, seals and protects. Products in this system include:

  • Acrylic Coatings — DuraTite 1065 and DuraTite 1070 single component, acrylic roof coatings demonstrate excellent adhesion to polyurethane foam, concrete, masonry, primed metal, primed wood and primed asphalt roofs. When applied at 12 DFT (dry film thickness) and fully cured, DuraTite 1065 and 1070 exhibit exceptional weatherability and resistance.
  • Silicone Coatings — DuraTite 1380 and DuraTite 1395 are high-solid, single-component, silicone coatings with low VOCs and excellent chemical and abrasion resistance. When applied, DuraTite 1380 and 1395 form a breathable membrane, making it an ideal choice for new and recoat applications over metals, single-ply membranes, masonry block, concrete and spray polyurethane foam roofing systems where moisture may be present.
  • Urethane Coatings — DuraTite 1175 and DuraTite 1285 are high-solid, single-component urethane coatings that can be applied in a wide range of ambient temperatures and humidity levels. Both offer superior impact and crack resistance. DuraTite 1285 also offers enhanced UV stability.
  • Polyurea Coatings — DuraTite 2185 is a fast set, rapid cure, 100 percent solids, plural component aluminized polyurea spray-applied lining offers enhanced UV stability and remains flexible in cold temperatures. DuraTite 2185 demonstrates exceptional adhesion to spray polyurethane foam, concrete, bitumen and asphaltic roofing felts, steel, wood and most substrates in extreme cold and warm climates.
  • Spray Polyurethane Foam — DuraTite CC 2.5, DuraTite 2.8 and DuraTite 3.0 closed-cell polyurethane foam products’ lightweight, seamless construction ensures leak-proof performance and allows for value engineering labor and material cost savings.

DuraTite SPF roofing system guide specifications and five-, 10-, 15- and 20-year warranties are available for use on roof substrates, such as metal, built-up roof membrane, single ply, wood recoat and concrete.

CertainTeed Metal Roofing Exceeds Industry Standards

Roof specifiers and installers can now achieve project goals in fire resistance and solar reflectance more easily with CertainTeed Presidio Metal Roofing as a result of testing to the latest editions of industry performance test standards. Introduced last year, the line of steel roofing products blends the look of classic roofing materials with the exceptional wind/hail resistance and solar reflectance of metal roofing.

Specifiers now can achieve Class A fire rating with Presidio applied over a layer of a specific fire-resistant roofing membrane product paired with a single layer of select CertainTeed underlayments – a barrier board is no longer needed. Further, the Presidio metal roofing products now earn a Class B fire rating when applied over a single layer of a variety of CertainTeed roofing underlayments.

In regards to solar reflectance, seven colors from the Presidio roofing product line have recently been listed for solar reflectance and thermal emittance by the Cool Roof Rating Council (CRRC). Presidio Tile colors English Toffee, Nutmeg, Speckled Bronze and Terra Cotta, and Presidio Shake colors Ash, Sand Dune and Weathered Wood are listed by CRRC with initial solar reflectance values ranging from 0.26 to 0.34.

“Sustainability and providing customers with products that help ensure the safety of homeowners have long been top priorities at CertainTeed,” says Dale Walton, residential products manager for CertainTeed Roofing. “And, the recent ratings from Intertek and the CRRC serve as proof of this commitment. With Presidio, specifiers and contractors will have the peace of mind to install the highest quality energy-efficient, fire- and weather-resistant roof, all while more easily meeting project certification goals.”

Each easy to install Presidio panel has overlaps that conceal the joints and create a seamless appearance. Presidio Tile embodies the same Mediterranean magnetism of traditional clay, but weighs hundreds of pounds less, and at a fraction of the cost. Presidio Shake is pre-weathered, aged and distressed to recreate the look of wood. Lastly, Presidio Slate showcases the natural beauty of stone in a lightweight, fully recyclable, energy-efficient material.