Accella Performance Materials Announces New Vice President

Accella Performance Materials, a Carlisle Company, has promoted Joe Negrey to Vice President and General Manager of its Spray Polyurethane Foam (SPF) Insulation business unit. Negrey will oversee all business operations—helping to advance Accella’s commitment to bringing energy-saving, cost-efficient SPF technology to the North American and global markets.

A veteran within the polymers space, Negrey has more than two decades of process engineering, product development, sales, marketing and manufacturing experience in the polyurethane systems industry. Prior to assuming this current role, Negrey served as Vice President of Accella’s Tire Fill division where, under his leadership, the brand’s foam fill product business for the Off-the-Road tire industry grew to become the recognized international category leader.

Negrey has also served in various other capacities within the Accella brand family, and held positions as Operations Manager, Director of Operations, and Vice President of Operations. His strengths lie in his visionary leadership and strategic planning capability—and excellent team management approach. Negrey holds a bachelor’s degree in Industrial Technology from California Polytechnic State University.

For more information, visit www.accellacorp.com.

Roofing Project Keeps Arizona Warehouse Chill

When the original built-up roof on Hensley Beverage Company’s Tucson warehouse was failing, it was topped with a sprayed-in-place polyurethane foam roof system and an acrylic elastomeric protective coating. Photos: Rain Man Roofing

What do Landshark Lager, Stella Artois, 3 Amigos Tequila, Nesquik, and Sunny Delight have in common? All are products distributed by Arizona-based Hensley Beverage Company. And all are favorites of Rain Man Roofing, the contractor that repaired a 100,000-square-foot warehouse roof at Hensley’s Tucson location.

Hensley Beverage Company began in 1955 when Jim Hensley, starting with just 15 employees, delivered 73,000 cases of ice-cold Anheuser-Busch beer to thirsty Phoenix residents. Fast-forward to 2018 and Hensley is among the largest family-owned and -operated beverage distribution firms in the United States.

Today, under the leadership of CEO Robert Delgado, President Andrew McCain and Chairman of the Board Cindy McCain, Hensley Beverage Company is a 30-million-case wholesaler. Cindy McCain is the daughter of company founder Jim Hensley and wife of U.S. Sen. John McCain (R-Arizona). Andrew McCain is the senator’s son from a previous marriage.

The company operates a service fleet of more than 1,100 delivery vehicles and employs more than 1,200 people. Delivery now extends beyond Phoenix into every corner of Arizona. Trucks regularly deliver over 2,500 different beverages to thirsty desert dwellers, including domestic, imported, and craft beers, spirits, wine and non-alcoholic beverages of all sorts.

Beverages like these have to be refrigerated in a climate-controlled distribution warehouse while they are being stored. Some kegs need to be stored at 34 to 38 degrees Fahrenheit. Other products can get by at higher temperatures ranging from 45 to 60 degrees.

But the warehouse can’t control the environment efficiently with a leaky roof. That’s where Rain Man Roofing owner Mark Hughes came in.

Rain Man Roofing, founded in 2010, is one of the highest rated roofing specialists in both Arizona and California. In 2011, Rain Man became a BBB Accredited Business with an A+ rating, which it has consistently maintained. With more than 25 years of experience in the roofing industry, Rain Man is well known for inspecting every roofing solution at both the beginning and end of a job — and providing detailed status reports throughout the entire process.

Rain Man to the Rescue

In early 2018, Hensley’s VP of Fleet and Facilities Anthony Keffer contacted Hughes about roof issues at Hensley’s Tucson facility. Hughes’ roofers had, in September 2017, successfully stopped a leaking roof at another Hensley building in Flagstaff with a simple and affordable restoration solution, so Keffer asked Hughes to take a look at the Tucson site.

Crews from Rain Man Roofing completed work on the nearly 100,000-square-foot section of the warehouse roof in just three weeks. Photos: Rain Man Roofing

Several attempts to fix the roof in-house had failed to solve the problem. But Hughes and Rain Man, along with Erin Easter of Icynene-Lapolla, suggested a re-roof using a roof system of sprayed-in-place polyurethane foam and an acrylic elastomeric protective coating. Hensley accepted the proposal and work on the nearly 100,000-square-foot warehouse roof began.

Hensley inherited the 20-plus-year-old, low-sloped roof of the Tucson distribution facility in January 2016 when the company acquired Anheuser-Busch InBev wholesaler Golden Eagle Distributors Inc. The roof itself consisted of a UV-coated built-up, smooth-surfaced modified roof system over lightweight concrete. The old roof also included a cardboard separator installed between the concrete and a corrugated metal roof deck.

By 2018, the laps in the roof’s membrane no longer functioned properly and roof system failure became increasingly frequent. The lap failures, most likely caused by improper installation and deterioration from constant UV exposure, caused obvious openings in the membrane. Rain Man’s inspectors noticed these problems, as well as related failures in the expansion joints, and worked to come up with a viable solution.

The Repair Proposal

Together, Hughes and Easter proposed installing a spray-in-place polyurethane foam roof system over the existing system. The proposal covers the north end of the building (the 100,000-square-foot portion of the roof), where the majority of the controlled environment warehouse (CEW) is located. Hensley’s budget required that the southern portion of the building be repaired later; this second stage was tentatively set for August 2018.

A 1-inch thick layer of polyurethane spray foam was applied over the entire existing roof system. The foam was also used to form flashings at penetrations. Photos: Rain Man Roofing

The answer to the lap problems was to broom and blow the roof, which entailed cleaning the roof of debris and smoothing out the plies to ensure contact with adhesives. Lapolla Thermo-Prime Acrylic Roof Primer was to be applied to the roof, followed by a 1-inch layer of spray polyurethane foam (FOAM-LOK™ LPA 2800-4G) on top of the primer. Finally, a double-pass application of acrylic elastomeric Thermo-Flex 750 coating would finish the job.

Scheduled to start in April 2018, work was expected to take three weeks to complete and would require two foam rigs and eight full-time roofers with Rain Man’s David Caballero as foreman. Hensley would provide the roofers with a covered staging area (normally used as a patio for side-loaded delivery vehicles), where the crew could store equipment and roofing materials.

The staging area would allow Rain Man to shield its supplies and equipment from the high winds and cold weather. Because the job took place in April, when cold temperatures are common in Tucson, the spray foam would be stored under the patio cover. The colder spray foam gets, the longer it takes to warm it up so it can be used effectively.

The finished product was designed to take advantage of the insulating properties of the original roof, and the new “cool roof” monolithic system overlaying the old one would add R-value to the warehouse. The lightweight concrete separator would be retained so the spray foam wouldn’t fill the low spots in the corrugated metal roof deck, which would be a waste of materials.

Roof System Installation

Rain Man Roofing began the project with a pre-job inspection to discuss the application process of the new roof, go over safety and logistical concerns and keep the team at Hensley in the loop. Hughes prides himself on keeping his clients informed of each step in the roofing process.

Photos: Rain Man Roofing

After the details of the roof application were ironed out, the roofers set up their safety precautions. The Hensley building’s low-slope roof did not pose any unusual safety precautions, but Tucson regularly experiences strong winds that make roofing jobs more dangerous. Bright light also presented a danger to the roofers’ eyes, especially after the white acrylic coating was applied. The light reflected off the roof from the intense Arizona sun can be blinding. Hughes and Caballero made sure that their roofers took appropriate measures against the wind and the blinding light.

During the project, safety meetings were held every morning before work to discuss any danger areas that might present themselves that day. The crew also had to ensure each day that the surrounding area was protected from overspray. Sometimes this involved moving company vehicles away from the building.

Once they climbed up onto the roof, the roofers removed and properly disposed of 830 linear feet of expansion joint. After new expansion joints were mechanically fastened to the existing metal deck, the roof was blown and pressure washed free of dirt and debris. Polyurethane foam requires a completely clean surface to ensure a proper bond.

Thermo-Prime was applied to the prepped roof at a rate of one-quarter gallon per 100 square feet. Next, a 1-inch thick layer of polyurethane spray foam was applied over the entire existing roof system. The foam was also used to form all penetration flashings as needed.

Finally, the white acrylic protective coating was applied evenly to the roof in two passes. Each pass used 1.5 gallons per 100 square feet, adding up to three gallons total as described in the manufacturer’s specifications and 10-year limited warranty requirements.

When All’s Said and Done

After three weeks of hard work, high winds and bright sun, Rain Man completed Hensley’s new monolithic roof system. The new roof, designed to have zero seams and zero breaks between flashings and the roof system, will now stand up to the harsh desert climate and add a minimum of an R-6 insulation value to the controlled environment warehouse.

The Hensley Beverage Company is thrilled with its new roof and ready to contract Mark Hughes and Rain Man Roofing for more work in the future, starting with the southern part of the Tucson facility in August.

Hensley’s Anthony Keffer was also kind enough to provide beverages — non-alcoholic, of course — direct from the warehouse to the roofers working in the hot sun. And in the evenings, they were treated to some Bud Light to celebrate a job well done.

THE TEAM

Roofing Contractor: Rain Man Roofing, Phoenix, Arizona, www.rainmanroofing.com
Roofing Materials Distributor: Icynene-Lapolla, Houston, Texas, and Mississauga, Ontario, Canada, www.icynene-lapolla.com

MATERIALS

Primer: Thermo-Prime Acrylic Roof Primer, Lapolla, www.lapolla.com
Spray Polyurethane Foam: FOAM-LOK 2800-4G, Lapolla
Acrylic Elastomeric Coating: Thermo-Flex 750, Lapolla

Silicone Coating Restores the Roof, Reduces Utility Costs at Mixed-Use Complex

At the Shoppes of Johnson’s Landing in Angier, North Carolina, ACC applied a high-solids silicone roof coating on the 20-year-old metal roof to seal penetrations, restore the roof, and provide a white reflective coating. Photos: All-County Contracting (ACC)

Glenn Wujcik, the owner of All-County Contracting (ACC), headquartered in Raleigh, North Carolina, has been fascinated with spray rigs since he and his brother first used one in 1979 to insulate a van with spray polyurethane foam (SPF). His company specializes in applying SPF and roof coatings on existing buildings. Lately, he’s found silicone roof coatings are making up an increasing share of his company’s workload.

“The coatings industry in general is booming right now,” Wujcik says. “A lot of the TPO and EPDM roofs are nearing the end of their service life, and instead of tearing them off, if you catch them in time, you can go over it with the silicone coating and get a new 10-year warranty. Silicones have a proven track record. When you put it on properly, it weathers really well. It has excellent elongation.”

Wujcik characterizes himself as a hands-on owner who strives to be on the site for every job. He believes there is an art as well as a science to operating a spray rig properly, and experience is crucial. “I love doing this,” he says. “I’ve been doing it for more than 30 years, my business partner’s been doing it more than 30 years, and our best sprayer has sprayed more than both of us combined. We know what we have to do, we know how long it’s going to take, and we have the right equipment. We are really good about the preparation and the application.”

Coatings and spray foam are excellent products, but only in the right situations, notes Wujcik. They should only be used on the proper substrates and applied in the right conditions. “In spraying, the most important thing is knowing when not to spray,” he says. “Right now, I’m working on a job, and for the last two days, there have been 10-20 mph winds, and I haven’t finished it yet. I told the owner, ‘I haven’t oversprayed anything yet, and I don’t want to.’ I’d rather do it right and not have any problems.”

Wujcik points to a recent project on a mixed-use building in Angier, North Carolina, to illustrate some of the benefits of a silicone roof coating. “It’s a U-shaped building with about 14,000 square feet of roof space,” Wujcik notes. “There’s a bakery, a restaurant, a pharmacy, and a doctor’s office, and there are a lot of penetrations on the roof.”

The penetrations were the site of multiple leaks. Wujcik decided to use a high-solids silicone coating, GE Enduris 3502, to prevent leaks and extend the life of the roof. The monolithic coating will seal the penetrations, and the white reflective surface will provide an additional benefit: reduced cooling bills in the summer. “Putting a white coating on it is going to reduce their energy load in the summer pretty substantially,” he says.

Applying the Coating

On this project, the first step was to pressure wash the existing roof. “That’s where most coating jobs fail — surface preparation,” Wujcik states. “Washing the roof properly is one of the most important steps.”

The high-solids silicone coating was applied to the existing standing seam metal roof. Care had to be taken to ensure all sides of the metal ribs were properly covered with the material. Photos: All-County Contracting (ACC)

The company uses 4,000 psi belt-drive power washers, so care has to be taken not to damage the roof or skylights, which are covered and marked for safety reasons. The company follows all OSHA regulations, which in most cases means setting up safety lines 6 feet from the edge, with stanchions 10 feet apart, to establish a safety perimeter.

“Safety is my number one thing,” Wujcik says, “I’ve been doing this a long time and I’ve never had a lost-time accident. I preach safety. That is absolutely the most important — and accidents are expensive.”

The next step is to apply the GE Seam Sealer at the penetrations. “When this roof was originally installed 20 years ago, they did it textbook perfect,” Wujcik notes. “Each 4-inch pipe coming though had at least 20 fasteners holding it down.”

However, over time, the rubber grommets on the fasteners can degrade, and expansion and contraction can take their toll. “We have really hot summers here, we’ve seen roofs where literally thousands of fasteners have backed out,” he says.

The seam sealer is typically applied with a brush. “Any horizontal seams, any termination bars, any penetration that goes through the roof that has a screw, we apply the seam sealer,” he says. “It goes on quite thick — at about 80 linear feet per gallon.”

After the seam sealer cures for one day, the coating is applied. Spraying flat roofs with EPDM, TPO, and PVC membranes is a fairly straightforward process, according to Wujcik. “You basically spray it just like you would spray paint a wall,” he says. “You overlap your spray pattern 50 percent. I’ve been doing it for so many years, and you get a feeling for how fast you can go.”

After the roof was power washed, the seam sealer as applied to the seams and penetrations. After it cured, two coats of the high-solids silicone product were sprayed on the roof. Photos: All-County Contracting (ACC)

A wet mil gauge is used to ensure the proper thickness. Wujcik notes the high-solids silicone formulation has very little shrinkage as it dries.  “As we’re spraying, we insert the gauge into the wet coating and it tells you how many mils you have sprayed down. In this case, we were applying to achieve 21 dry mils.”

The spray rig is set up on the ground and operated by one man, while the sprayer and the hose man are working on the roof. “It’s a minimum of a three-man crew per coating rig,” he notes. “You’re dealing with about 6,000-7,000 psi of pressure, so you need special hoses rated for at least 7,000 psi. You never want to kink them. If you busted a hose, by the time someone came down from the roof to the machine, you could pump out 20 gallons on the ground. That’s why you need a ground man.”

Flat roofs are sprayed perpendicular to the roof, but the standing seam metal roof on this project called for a different technique. “On metal roofs with high ridges, if you don’t angle your gun you’ll miss the sides of the ribs,” Wujcik points out. “You have to do it from one direction, working one way, and then turn around and do it from the other direction, working the other way. If you try to spray straight down on the roof, you’re going to miss the nooks and crannies in all of those ribs.”

The surface area of the ribs also has to be taken into account when calculating the amount of liquid that will be applied, notes Wujcik.

The final step in the process is to touch up the applications at the penetrations to ensure a clean look. On vertical surfaces including parapet walls, crews ensure the coating is applied to a uniform height. “On the last day, we take up brushes and rollers and cut in straight lines,” he says. “That really finishes the job. The detailing gives it that final touch.”

Open for Business

The active and open jobsite posed some challenges. “There were a lot of cars around the building, so we had to be very careful not to hit them with overspray,” Wujcik notes. “When you’re working on a plant, you might be able to move all of the cars to a different location, but at doctor’s offices and restaurants, you have traffic in and out of the parking lot all of the time. We can use car covers if there are a few cars there, but when they are in and out like that, it’s not practical, so you have to be very careful when you do the job.”

The job was completed in the winter, and bad weather resulted in some delays. “A job like this in the summertime would have been a weeklong project at most,” Wujcik notes. “This project took almost a month because we had an exceptionally cold winter with a lot of high winds. It took extra time, but that’s my philosophy: If it’s not the right conditions, I just won’t do it.”

The project qualified for a 10-year warranty, and when it expires ACC plans to be there to pressure wash and recoat the roof for another 10-year warranty.

“We inspect our jobs every year,” Wujcik says. He notes that annual roof inspections and routine maintenance are the simplest and most cost-effective ways to ensure the roof’s life span. Yet these steps are often neglected.

“It’s amazing that some of these multi-million-dollar companies don’t send their maintenance guys up on the roof for 10 minutes to check the drains,” he says. “If a roof has 2 inches of pine needles around the drain, the whole roof has to have 2 inches of water on it before it begins to drain. That puts tremendous, tremendous stress on a roof. Keeping your drains clear is really important.”

TEAM

Roofing Contractor: All-County Contracting (ACC), Raleigh, North Carolina

MATERIALS

Roof Coating: Enduris by GE 3502, GE Performance Coatings, www.GE.com/silicones
Seam Sealer: GE Seam Sealer, GE Performance Coatings

Spray Polyurethane Foam Alliance Announces Excellence Award Winners

The Spray Polyurethane Foam Alliance (SPFA) has announced the winners of the 12th Annual SPFA National Industry Excellence Awards. Winners of the industry awards program represent stand out contractors and projects in the Spray Polyurethane Foam sector in both roofing and insulation, as well as in specialty applications. Awards were announced at the awards luncheon held at the Sprayfoam 2017 Convention & Expo in Palm Springs, Calif.
 
“Each year the Industry Excellence Awards allow us to recognize our industry’s contractors and projects,” says Kurt Riesenberg, executive director of the Spray Polyurethane Foam Alliance (SPFA). “This year’s entries set the bar in best practices with the contractors showcased helping to set a tone of excellence in the application of spray polyurethane foam.”
 
The awards program recognizes projects in five categories including: Residential Wall; Commercial Wall; SPF Roof Under 40,000 Square Feet; SPF Roof Over 40,000 Square Feet; Specialty Applications, a category formerly known as Tanks & Vessels & Others.
 
The winners and runners up of the 12th Annual SPFA National Industry Excellence Awards include:

  • Elite Insulation & PolyPro LLC for the Blakemore Estate with supplier Lapolla Industries Inc. (WINNER – Residential Wall Foam)
  • Polyseal and the Mertarvik Sled House with supplier SWD Urethane (Runner up – Residential Wall Foam)
  • West Roofing Systems Inc. for the HyCAL Gibraltar Facility Rehabilitation with supplier Premium Spray Products, an Accella brand (WINNER – Commercial Wall Foam)
  • Tri-County Insulation dba Boss Insulation for the Zinke Dairy Inc. with supplier Lapolla Industries Inc. (Runner up – Commercial Wall Foam)
  • Wedge Roofing for The Mission Church with supplier Premium Spray Products, an Accella brand (WINNER – SPF Roof Under 40,000 Square Feet)
  • West Roofing Systems Inc. for The Leader Building with supplier Accella and Progressive Materials (Runner up – SPF Roof Under 40,000 Square Feet)
  • Puff Inc. for JFK High School with supplier Covestro (WINNER – SPF Roof Over 40,000 Square Feet)
  • Insulation Solutions for Food Processing and Cold Storage Building with supplier Covestro (Runner up – SPF Roof Over 40,000 Square Feet)
  • Elite Insulation & PolyPro LLC for West Main Street Bridge with supplier Lapolla Industries Inc. (WINNER – Specialty Applications)
  • Divine Energy Solutions for Turtle Back Zoo Giraffe House Exhibit with supplier Lapolla Industries Inc. (Runner up – Specialty Applications)

 
“This year’s award entries brought in a number of innovative projects and applications,” says John Achille, president of the SPFA. “While we are limited in the number of awards we are able to bestow, this year saw no shortage of projects and work completed by contractors.”
 
The prestigious awards ceremony is one of many offerings at the Sprayfoam 2017 Convention & Expo. This year’s agenda included onsite exams and training for the SPFA’s Professional Certification Program; a keynote address by author and Emmy Award winner Steve Thomas of PBS’ “This Old House” fame, who is also a current spokesperson for Habitat for Humanity; a 35,000-square-foot exhibit hall showcasing booth displays from over 80 industry organizations, manufacturers, contractors, equipment providers, and many others; a three-day educational program including more than 30 break-out sessions; a general session with Sam Rashkin, chief architect, Building Technologies Office highlighting the Department of Energy’s Net Zero Initiatives; SPFA Annual Member Awards, honoring members who have demonstrated dedication to the betterment of the organization and industry at-large; the Annual Golf Tournament; VIP events; member and contractor-only events; an entertainment filled Close-Out Reception and Networking Party.
 
Attendance for the Sprayfoam 2017 Convention & Expo exceeded 1,200 individuals representing the complete Spray Polyurethane Foam industry and value chain, as well as the general public.
 
To inquire about event sponsorship for the 2018 event, please contact Michele Riesenberg at Michele@sprayfoam.org. Additional event information is available here.

Project Profiles: Education Facilities

Maury Hall, U.S. Naval Academy, Annapolis, Md.

TEAM

Roofing Contractor: Wagner Roofing, Hyattsville, Md.
General Contractor: C.E.R. Inc., Baltimore, (410) 247-9096

The project included 34 dormers that feature double-lock standing-seam copper and fascia metal.

The project included 34 dormers that feature double-lock standing-seam copper and fascia metal.

ROOF MATERIALS

Wagner Roofing was awarded the complete replacement of all roof systems. These included an upper double-lock standing-seam copper roof system, a bullnose copper cornice transition, slate mansard, 34 dormers with double-lock standing-seam copper and fascia metal, eight copper hip metal caps and a continuous built-in gutter with decorative copper fascia. Each of the dormers also had a copper window well.

The upper standing-seam roof was removed and replaced with 24-inch-wide, 20-ounce copper coil rollformed into 1-inch-high by 21-inch-wide continuous standing-seam panels that matched the original profile. The eave bullnose, which also served as the mansard flashing, was removed and returned to Wagner Roofing’s shop where it was replicated to match the exact size and profile.

The 34 dormer roofs were replaced with 20-inch-wide, 20-ounce copper coil formed into 1-inch-high by 17-inch- wide continuous standing-seam panels. The decorative ornate fascia of the dormers was carefully removed and Wagner’s skilled craftsmen used it as a template to develop the new two-piece copper cornice to which the roof panels locked. The cheeks and face of the dormers were also re-clad with custom-fabricated 20-ounce copper.

The oversized built-in-gutter at the base of the slate mansard was removed and replaced with a new 20-ounce copper liner custom-formed and soldered onsite. The replacement included a specialty “bull-nosed” drip edge at the base of the slate and an ornate, custom-formed fascia on the exterior of the built-in gutter. The decorative copper fascia included 85 “hubcaps”, 152 “half wheels” and 14 decorative pressed-copper miters. The original hubcap and half-wheel ornaments were broken down and patterns were replicated. Each ornamental piece was hand assembled from a pattern of 14 individual pieces of 20-ounce copper before being installed at their precise original location on the new fascia. The miters were made by six different molds, taken from the original worn pieces, to stamp the design into 20-ounce sheet copper.

In all, more than 43,000 pounds of 20-ounce copper was used on the project.

Copper Manufacturer: Revere Copper Products

ROOF REPORT

Maury Hall was built in 1907 and was designed by Ernest Flagg. Flagg designed many of the buildings at the U.S. Naval Academy, including the Chapel, Bancroft Hall, Mahan Hall, the superintendent’s residence and Sampson Hall. His career was largely influenced by his studies at École des Beaux-Arts, Paris. Examples of Flagg’s Beaux-Arts influence can be found in the decorative copper adorning the built-in gutter on building designs.

Maury Hall currently houses the departments of Weapons and Systems Engineering and Electrical Engineering. The building sits in a courtyard connected to Mahan Hall and across from its design twin, Sampson Hall.

PHOTO: Joe Guido

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Spray Polyurethane Foam Locks a Roof into Place

Lapolla Industries Inc. has made available FOAM-LOK 2800-4G Spray Polyurethane Foam for roofing.

Lapolla Industries Inc. has made available FOAM-LOK 2800-4G Spray Polyurethane Foam for roofing.

Lapolla Industries Inc. has made available FOAM-LOK 2800-4G Spray Polyurethane Foam for roofing. The fourth-generation SPF eliminates ozone depletion potential and reduces global warming potential. The rigid, closed-cell SPF may be applied over most new or retrofit roofing substrates. FOAM-LOK locks every portion of the roof into place, creating a monolithic membrane and eliminating the need for mechanical fasteners. The product seals the envelope, which minimizes the escape of conditioned air and dramatically reduces the structure’s energy consumption for heating and cooling, in turn reducing energy costs over the life of the roof. The low-maintenance material also resists wind uplift and acts as a waterproofing solution.

Spray Polyurethane Foam and Photovoltaic Roofing Systems

Spray polyurethane foam and photovoltaic systems are increasingly utilized together as
a joint solution for energy savings. With the continued push toward sustainability and growing
movements, like net-zero-energy construction, SPF and PV systems are a logical combined solution for the generation of renewable energy, the conservation of heating and cooling energy, and the elimination of the structure’s dependence on fossil-fuel-consuming electricity sources. Regardless of whether net-zero energy is the end goal, SPF and PV combined in roofing can be quite effective for many structures. Here are some considerations when looking to join these two powerful systems on the roof of a building.

ROOFTOP PV INSTALLATION TYPES FOR USE WITH SPF

Installation of PV systems on SPF roofing will inevitably create additional foot traffic. It is important to protect heavily trafficked areas with additional coating and granules or walk pads.

Installation of PV systems on SPF roofing will inevitably create additional foot traffic. It is important to protect heavily trafficked areas with additional coating and granules or walk pads.


Rooftop PV systems can vary significantly in size. Large-footprint buildings can employ PV systems rated from 50 kilowatts to 1,000 kW or larger while residential rooftop PV systems are commonly 3 kW to 5 kW.

Rooftop PV systems may be installed on racks or adhered directly to the roof surface. When looking to combine PV with SPF, it is generally not advised to adhere or place the PV panels directly onto the roof surface. Solar heat and water can accumulate between the PV and roof coating which could negatively impact coating performance. Moreover, panels applied directly to a low-slope roof will not be properly aligned with the sun to achieve optimal performance.

Non-penetrating rack systems may be placed directly on a rooftop and held in place with ballast. Racks may also be installed with penetrating supports that require flashings. Each type provides advantages and disadvantages. For example, ballasted racks may block water flow and affect drainage while penetrations require leak- and maintenance-prone flashings. SPF is unique in that it easily self-flashes around penetrating supports.

PV EXPLANATION

PV cells are the basic unit used to convert light to electricity. Many PV cells are bundled together to make a PV panel, or module. PV panels are grouped electrically to create a PV string. Depending on the system size, two or more strings are combined to create a PV array.

The dominant type of PV panel used with SPF roofing is cSi, or crystalline silicon. cSi is a typically rigid panel with a glass and metal frame and may be applied, unlike other dominant PV panel types, via rack installation methods.

A PV system includes many components in addition to the panels. Components include racks, rails, rooftop attachment devices, grounding systems, wiring and wiring harnesses, combiner boxes, inverter(s) and connection to the main electrical panel. Components may also include control modules and storage batteries for off-grid PV system installations.

ELECTRICAL SAFETY

Photovoltaic panels must be handled and maintained with caution. Electricity is produced when a single panel is exposed to light; however, because a panel is not part of a circuit, that electricity will not flow until the circuit is complete. A worker may complete the circuit by connecting the two wires from the backside of a PV panel.

When maintaining a PV system, it may become necessary at some point to disconnect or remove an individual panel from a string or an array. The whole system must be shutdown properly as a precautionary measure to prevent shocks from occurring to workers and arcing between electrical connections. This “shutdown” procedure must be followed with precision as part of a lock-out/tag-out program. This procedure is provided by the inverter manufacturer. Under no circumstances should SPF contractors ever disconnect or decommission a PV panel or system unless they are trained and qualified to do so.

HEAT BUILDUP

Photovoltaic panels convert approximately 15 to 20 percent of light to electricity, leaving the remaining unconverted energy to be released as heat. Additionally, PV panels are more effective when their temperature drops. It is for these reasons that the majority of rooftop PV systems are installed to encourage airflow under panels, which reduces the temperature of the panels, improves conversion efficiency and releases heat effectively. Photovoltaic panels installed 4 to 5 inches above the roof will not change the temperature of the roof and, instead, provide shade to the surface of that roof. This additional shade may extend the life of SPF roof coatings.

LOAD

PV panels add weight to a rooftop and this must be factored into the design and installation. Existing structures should be analyzed by a structural engineer to determine if the additional weight of the PV system is acceptable.

Rack-mounted arrays with penetrating attachments are fairly lightweight at 2 to 3 pounds per square foot, and ballasted arrays add 4 to 6 pounds per square foot. However, with the latter, more ballast is utilized at the perimeters and corners of a PV array. Thus, localized loading from ballast may reach as high as 12 to 17 pounds per square foot, which must be considered. Most SPF roofing systems have a compressive strength of 40 to 60 psi.

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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.

Sprayfoam 2016 Convention and Expo Keynote Speaker Announced

The Spray Polyurethane Foam Alliance (SPFA), the educational and technical resource to the spray polyurethane foam (SPF) industry, announced that motor mastermind and host of Discovery Channel’s Fast N’ Loud Richard Rawlings has been secured as the keynote speaker for the Sprayfoam 2016 Convention and Expo. To be held Feb. 8-11 in Orlando, the official national convention of the Spray Polyurethane Foam industry will feature four days of educational sessions, a 35,000-square-foot exhibit hall, awards, professional certification programs, annual golf tournament, and many other special events and features.

As co-host of Fast N’ Loud, Richard Rawlings searches Texas and the surrounding states for forgotten and derelict classic cars to purchase and restore at his famous Gas Monkey Garage in Dallas. Rawlings developed a passion for cars at an early age buying his first, a green 1974 Mercury Comet, when he was just 14. He has held several jobs—firefighter, police officer and paramedic—all before the age of 21, and eventually started his own business, building a printing and advertising company from the ground up. He later sold this company to fund his current Gas Monkey Garage venture—a world-renowned hot rod shop producing and shipping cars for people worldwide, a restaurant business and even a tequila brand. A veteran of transcontinental road rallies, Rawlings won the Gumball 3000 and Bullron—twice. He is the current world record holder in the Cannonball Run.

Richard Rawlings will deliver the Sprayfoam 2016 official keynote on Feb. 10 at 9 a.m. “We really are excited about Richard speaking with our group,” says Kurt Riesenberg, executive director of the Spray Polyurethane Foam Alliance. “Quite simply the guy has one of the coolest jobs going. He’s hustled his whole life and built these great businesses, deals with all the same challenges of any small business and he does it with a camera in his face all year. He’s an inspiring business story and a fascinating character that I believe will connect with our group in ways that will surprise them.”

During his keynote, Rawlings will likely speak about his businesses, challenges, opportunities, taking risks and pursuing one’s dreams with the discipline and persistence that is required for success. Rawlings will utilize any remaining time to answer audience questions about his life, the show, his business or even the building of hot rods.

“As a successful American entrepreneur, expert motor enthusiast and TV personality, Richard Rawlings is a huge draw for the attendees of Sprayfoam 2016,” says Denny Vanderwater, chairman of the SPFA and president of Sadler Coating Systems in Eagle Grove, Iowa. “We are expecting him to pack the house and for this to be our biggest convention to date.”

Sprayfoam 2016 will be held at the Rosen Centre Hotel in Orlando. With an expected attendance surpassing 1,200 individuals active in all aspects of the Spray Polyurethane Foam value chain and the public, the Sprayfoam 2016 event agenda will feature: a sold-out exhibit hall showcasing booth displays from more than 90 industry organizations, manufacturers, contractors, equipment providers, and many others; the full suite of SPFA Professional Certification Program classes and testing; a multi-day educational program, including more than 30 breakout industry expert panel sessions; the 11th Annual Industry Excellence Awards and Ceremony, highlighting true innovation and excellence in the nation’s best SPF projects; SPFA Annual Member Awards, honoring members who have demonstrated significant dedication to the betterment of the organization and the industry at-large; the Annual Golf Tournament; the Women’s Leadership in Spray Foam Networking Reception; VIP events; member and contractor-only events, and an entertainment-filled Close-Out Event Reception and Networking Party.

The SPFA will offer Professional Certification Program testing onsite at Sprayfoam 2016 on Feb. 8 and 9. Testing will be administered to individuals active in the installation of SPF in roofing and insulation, as well as to contractor and supplier companies, with the ability to gain professional accreditation on-site. Testing is offered as part of the internationally recognized, only-one-of-its-kind program built to advocate best practices and safety in the installation of SPF. The standards-driven program is ISO 17024 compliant and was developed by committees of industry stakeholders, in collaboration with OSHA, NIOSH and the EPA.

“It is becoming clear that certification is of paramount importance as our industry increases in sophistication,” says Vandewater. “With customers increasingly likely to request credentials when vetting installers, contractors and suppliers, the importance in having those credentials is also increasing. We will offer testing onsite at Sprayfoam 2016 to accommodate this growing demand.”

Premier sponsors of Sprayfoam 2016 include CertainTeed, Gaco Western, Graco, Honeywell, Lapolla, NCFI Polyurethanes, Spray Foam Polymers, and Sprayfoam.com. Premier Media Sponsors include Sprayfoam Professional (the official publication of the Sprayfoam 2016 event), Walls & Ceilings, Architectural Roofing & Waterproofing/Walls & Ceilings Architect, and Roofing Contractor magazines.

The Spray Polyurethane Foam Alliance Recognizes CertainTeed Insulation Products

Thanks to an accreditation awarded by the Spray Polyurethane Foam Alliance Professional Certification Program (SPFA PCP), contractors can be confident that CertainTeed operates using the industry’s best practices for world-class spray foam insulation products, technical knowledge and training. CertainTeed is one of the first supplier companies in the spray polyurethane foam (SPF) industry to meet the rigorous demands of the respected professional organization’s certification program.

“We believe excellence in manufacturing the highest quality spray polyurethane foam products is just part of the equation,” says Ken Forsythe, manager of product marketing for CertainTeed Insulation. “Education and proper installation of building materials have always been top priorities with CertainTeed. SPF insulation is one of the more technical products to master, and our SPFA PCP supplier accreditation shows our dedication to partnering with building professionals well after the product leaves the factory.”

The SPFA PCP is an internationally recognized program built for those involved in the installation of spray polyurethane foam. Covering roofing and insulation applications, the program advocates industry best practices and safety. The new SPF Supplier Company Accreditation category is designed to increase the scope of the program, to include additional organizations and individuals which are key to the SPF supply chain, and to provide further distinction for those companies that invest in their people and customers.

The standards-driven program is ISO 17024 compliant and was developed by committees of industry stakeholders in collaboration with the Occupational Safety and Health Administration (OSHA), The National Institute for Occupational Safety and Health (NIOSH), and the U.S. Environmental Protection Agency (EPA), in addition to other federal agencies and external stakeholders. It is offered both domestically and internationally.

“This prestigious achievement signifies CertainTeed’s adherence and commitment to the SPF industry’s best practices,” says Kelly Cook Marcavage, certification director for SPFA PCP. “It is an honor to work with such a dedicated company who shares our demand for the highest of standards and utmost professionalism.”

As part of the accreditation process, select CertainTeed personnel were required to become certified as SPF Insulation Supplier Representatives through the SPFA PCP. Criteria also included supplier offered training programs for contractors and best practices/risk management program verification.