Federal Agency Relies on Silicone Coating System to Protects its Roof

The coating forms a seamless membrane. DLA chose to cover the previous gray coating with a white coating finished with granules to minimize heat absorption. Photos: GE Performance Coatings

The coating forms a seamless membrane. DLA chose to cover the previous gray coating with a white coating finished with granules to minimize heat absorption. Photos: GE Performance Coatings

The cold, snowy winters and hot, wet summers in Scotia, New York, put immense stress on local buildings’ roofs. A damp climate with conditions that often involve standing water can take a toll on conventional roof coatings. That was the reason the federal Defense Logistics Agency (DLA) first chose a waterproof silicone roof coating for its Scotia facility in 1996.

“Most building owners in this area spend thousands, sometimes hundreds of thousands, each year keeping their roofs intact,” says Dave Landry, director of operations for DLA, adding, “After using Enduris by GE, we spend almost nothing in comparison.”

More than two decades later, the coating’s 15-year extended warranty had long run out and DLA was ready to reapply. As in 1996, the alternative to resealing would have been a costly and intrusive tear-off. “We had a terrific first experience with Enduris roof coating,” says Landry. “Twenty-two years later, there was no question about who we’d use.”

Efficient Installation

The GE Performance Coatings team inspected the roof for damage before the work began. After more than two decades of punishing conditions, on average less than five mils of the original 21.5-mil coating surface had worn away. Because silicone coatings are seamless, the roof was also protected from expansion and contraction cycles caused by temperature

More than 20 years after applying a silicone roof coating on the roof of the Defense Logistics Agency in Scotia, New York, PUFF Inc. returned to conduct another installation.

More than 20 years after applying a silicone roof coating on the roof of the Defense Logistics Agency in Scotia, New York, PUFF Inc. returned to conduct another installation. Photos: GE Performance Coatings

fluctuations, which can tear apart dissimilar materials where they overlap. In the end, only 5 percent of the 275,000-square-foot roof required repair—the rest just needed a few more mils of coating. DLA chose to cover the previous gray coating with white coating finished with granules, helping to lower the amount of heat absorbed by the roof and add further protection.

The applicator, PUFF Inc., also experienced the benefits of the silicone coating. “During the seven-week project, we lost only one day to rain,” says Bill Rush, operations manager at PUFF Inc. and an approved applicator for GE Performance Coatings. “If it had been an acrylic coating, we would have likely lost a week to predicted rain delay. Additionally, there were two days that rain came unexpectedly from over the mountains, when the forecast was a 10 percent chance of rain.”

A quicker installation meant savings for the PUFF Inc. team—hotel rooms, per-diem expenses, and the opportunity cost of missing other jobs add up fast. Rush also felt a personal connection to the DLA’s positive experience. “I led the installation 20 years ago,” he says. “It’s a matter of great pride to see how well the system held up.”

TEAM

Roofing Contractor: PUFF Inc., Charlottesville, Virginia, Puffinc.com

MATERIALS

Coating System: Enduris by GE, GE Performance Coatings, GE.com/silicones

SEBS Roof Coating System Designed for Use in Variety of Applications

Mule-HideThe new SEBS Roof Coating System from Mule-Hide Products Co. combines high tensile strength, excellent elasticity, ultra-low moisture permeability and resistance to ponding water, making it an ideal choice for use in a wide variety of challenging roof repair and restoration applications, according to the manufacturer.
 
The solvent-based coating system is designed primarily for use in repairing and restoring metal roofs, but also can be used on TPO, EPDM, asphalt, modified bitumen, Kynar, concrete, Hypalon and PIB roofing systems.
 
The SEBS Roof Coating System includes the following products: SEBS Primer; SEBS Base Coat; SEBS Roof Coating (for use on metal, TPO and Hypalon roofing systems); SEBS+ Roof Coating (for use on metal, TPO, Hypalon, EPDM, asphalt, modified bitumen, Kynar, concrete and PIB roofing systems); SEBS Seam Sealer; and SEBS 1 – Multipurpose Sealant.

The coatings’ solvent base and ultra-low moisture permeability enable them to outperform other coating types in ponding water applications, according to the manufacturer. They will not delaminate if the substrate becomes wet and, unlike water-based coatings, they will not re-emulsify during prolonged exposure to ponding water.

The lack of permeability also helps prevent corrosion of metal substrates and makes the coatings highly resistant to algae and fungi. Antioxidants and light stabilizers ensure the coating system’s durability throughout the roofing system’s service life.

Because the SEBS Roof Coating System is solvent-based, it cannot be shipped to areas that regulate the use of products containing volatile organic compounds (VOCs). 

GE Performance Coatings & Sealants Roof Solutions Will Be Displayed at IRE

International Roofing Expo attendees will find roof solutions and product specialists at GE Performance Coatings & Sealants Booth 340. On display during the March 1-3 event in Las Vegas, the 100 percent silicone GE Enduris roof coating is a solution that provides durability.

“GE Enduris is an answer for roofing protection and restoration,” says Peter Friedli, marketing manager. “For over 50 years, contractors and building owners have trusted us to deliver building products. Our team is looking forward to helping attendees leverage our benefits for themselves.”

GE Performance Coatings experts will be on-site to consult about the components of GE Enduris, provide technical insight, and explore application possibilities.

GE Enduris high solids roof coating stops leaks, improves performance, and extends roof life with a single-coat, primerless application. Able to withstand fluctuating conditions and ponding water, GE Enduris can restore most every type of roof substrate.

For more information on GE Enduris, visit GE Performance Coatings & Sealants’ booth at IRE, or click on this link to visit the website.

RCMA, NSF International Create Roof Coating Materials PCR

The Roof Coatings Manufacturers Association (RCMA) and NSF International have created a product category rule (PCR) for roof coating materials. PCRs enable product environmental information to be more transparent and useful to the marketplace. Products covered in this PCR include fluid-applied and adhered coatings used for roof maintenance or roof repair, or as a component of a roof covering system or roof assembly. 
 
Based on international environmental management guidelines (ISO 14025), a PCR defines how to conduct a life cycle assessment for a particular product group and what to include in the resulting report. A life-cycle assessment measures inputs, outputs and environmental impacts of a product across its lifespan. The environmental product declaration (EPD) is the third-party-verified report that explains the data generated from a life cycle assessment. What is included in the EPD is also defined by the PCR.

The NSF International National Center for Sustainability Standards (NCSS) utilized an open consultative process to develop the PCR with participation from an expert panel of RCMA members, suppliers, regulatory agencies, environmental organizations and end users.  RCMA promotes the benefits of roof coatings and represents manufacturers of asphaltic and solar reflective roof coatings as well as suppliers to the roof coatings industry. 

“This product category rule developed by RCMA and NSF International provides our industry a needed guideline for calculating and reporting the environmental attributes of roof coatings,” says Jim Kirby, executive director of RCMA. “The subsequent life cycle analyses developed by our members using the PCR can provide a basis for improvement to enable reductions in environmental impacts over time. We look forward to the positive impact this will have on the industry and those seeking more sustainable building products.”

“As a manufacturer participating in the PCR development, we support our industry in providing transparent and science-based information to our customers,” says Douglas P. Mazeffa, environmental project manager at Sherwin Williams. “Our company is committed to helping customers make informed, environmentally-based purchasing decisions.”
 
“Industries benefit from NSF International’s standards development process that was used to develop the PCR for roof coating materials,” states Jessica Slomka, manager of the NSF International National Center for Sustainability Standards. “By engaging RCMA members and other stakeholders, we help ensure the environmental impacts in the life cycle of a product are represented. The result is a defined set of rules that enable comparative data to be gathered and reported in a standardized fashion. This is crucial in helping builder’s source products that meet their environmental goals.”

Verified environmental product declarations (EPDs) as defined by this PCR may help building projects qualify for points through the LEED v4 Material and Resource credits and comply with the International Green Construction Code (IgCC).