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

Standing Seam Metal Roof Crowns Jaindl Farms Office Addition

The Jaindl Farms office complex sits on an a 12,000-acre turkey farm complete with its own feed mill. Photo: Steve Wolfe Photography.

Jaindl Farms is a multigenerational family business that encompasses a land development company and a fully integrated turkey farm. Its headquarters sits on 12,000 acres of farmland in Orefield, Pennsylvania, where the company grows the crops to make the feed for its turkeys. When the owners contacted MKSD Architects in Allentown, Pennsylvania, about adding space to their offices, the goals were to provide room to expand and to honor the Jaindl family’s history and legacy.

“The owner has a deep appreciation for all things agrarian and for old barns,” recalls Todd Chambers, partner, MKSD Architects. “One day we were meeting about the project, and he said, ‘What do you think about reusing the timber frame of an old barn?’ A light bulb went off.”

A large barn in Northampton County was located and dismantled, and the frame was repurposed for the office addition. The new two-story stone structure connects to the existing one-story office building, which was roofed with natural cedar shakes. A standing seam metal roof was specified for the new structure in

The new two-story addition was constructed with wood repurposed from a barn built around 1900. It was topped with a new standing seam metal roof. Photo: Steve Wolfe Photography.

keeping with the traditional architecture of the area. “We were concerned about the aesthetics, so standing seam was an obvious choice,” Chambers says. “We tried to keep the penetrations to a minimum and keep them out of the view of the main facade.”

The roofing contractor on the project was The Gehringer Company, headquartered in Whitehall, Pennsylvania. The company was called in to handle the project by the general contractor, Allentown-based Bracy Contracting Inc. The Gehringer Company’s president, Tom Gehringer, recommended a Dutch Seam roof system manufactured by ATAS International because it had the durability and aesthetics the project required, but was also easy to install. “It’s less labor-intensive than other systems because it doesn’t require a mechanical seamer,” he notes.

A Turkey Shoot

The roofing installation went very smoothly, according to Gehringer and Chambers. The Gehringer Company crews installed 6,400 square feet of ATAS MRD-110 Dutch Seam panels on the roof. They also installed approximately 500 square feet of metal panels as siding on the dormers. “It’s a 12-inch-wide piece with a raised section at the lock,” notes Gehringer. “When it’s installed looks like board and batten siding.”

The roof features dormers to bring in natural light. The dormers are sided with metal panels to minimize roof maintenance. Photo: The Gehringer Corporation.

Installation began in January 2017, so the weather posed the biggest challenge. “We did it when the temperatures were pretty low. The highs were in the 20s,” Gehringer recalls. “The nice thing is you can install the system in almost any temperature.”

After ATA-Shield high temperature synthetic underlayment was applied to the entire surface of the plywood deck, the roof panels were installed. “We worked from our aerial lifts,” Gehringer explains. “We purchased two aerial lifts several years ago and now use them for almost all of our steep roofing installations.”

Details included SL-2 Snow Meister snow guards from Berger Brothers. “In this climate, one of the tricky pieces with standing seam is sliding snow, so we specified snow guards that clamp to the standing seams,” Chambers says. “The ones we used emulate the turkey tail feathers.”

Roofing crews also tied in a small section of new cedar shakes to extend the hallway of the existing structure and connect it to the new addition. “We installed the original cedar shakes on the adjacent section for Bracy Contracting almost 20 years ago,” notes Gehringer.

The project went off without a hitch. Gehringer credits his company’s experienced crews and field supervisors for its

The snow guards installed on the project were chosen in part because they reminded the business owners of a turkey’s tail feathers. Photo: The Gehringer Corporation.

excellent track record. “I believe we’re one of the larger architectural metal roofing installers in our area and have virtually no callbacks on roofs we install,” he says. “What it boils down to is having people that know how to do it right — and having people that are committed to doing it right. And with architectural metal work, you have to take your time and do it right. This metal roof is going to look exactly like it looks now for at least 30 years.”

Looking back, what strikes Chambers is how different this project was from his typical assignments. “We’re commercial architects. We do a lot of health care work,” he says. “The ability to design something that’s not done every day, and is different than your typical approach, is refreshing and fun.”

TEAM

Architect: MKSD Architects, Allentown, Pennsylvania, www.MKSDarchitects.com
General Contractor: Bracy Construction Inc., Allentown, Pennsylvania, www.BracyConstruction.com
Roofing Contractor: The Gehringer Corporation, Whitehall, Pennsylvania, www.GehringerRoofing.com

MATERIALS

Metal Roof Panels: ATAS Dutch Seam MRD110, .032 aluminum, Medium Bronze, ATAS International Inc., www.ATAS.com
Metal Siding Panels: ATAS Multi-Purpose Panels MPW120, .032 aluminum, Sierra Tan, ATAS International Inc.
Synthetic Underlayment: ATA-Shield, ATAS International Inc.
Snow Guards: SL-2 Snow Meister Snow Guards, Berger Building Products, www.bergerbp.com

Communication Is Crucial When You’re Working on Top of the Village Hall

Lincolnshire Village Hall houses city offices and a police station. The structure’s roof and gutter systems were recently replaced by All American Exterior Solutions. Photos: DaVinci Roofscapes

The Lincolnshire Village Hall, located in Lincolnshire, Illinois, houses city departments and the offices of elected officials, as well as the Lincolnshire Police Station. When its natural cedar shake roof and inlaid gutter system began to fail, city officials looked for a solution that would provide the desired aesthetics but last longer and require less maintenance.

Dale Pole of All American Exterior Solutions, a full-service union roofing contractor headquartered in Lake Zurich, Illinois, thought he had the answer. Pole, a 32-year industry veteran who is now the company’s vice president of operations, dropped off samples of a synthetic shake roofing tile manufactured by DaVinci Roofscapes and asked if city officials wanted to give it a try.

All American was awarded the job in 2016. The scope of work consisted of a complete re-roof of the complex, including the steep-slope roof system on the hall and tower. The project also included five sections of flat roofing and replacement of the copper gutter system. The job was complex, but All American was up to the challenge. The company worked in conjunction with Illinois Roof Consulting Associates, located in McHenry, Illinois.

The Steep-Slope System

The building’s signature feature is the observatory tower over the main entrance, which extends approximately 45 feet in the air. The main roof features a pitch change at the rear of the building, where the roof goes from 4:12 to 12:12. All

The complex is located right next to a large pond and bordered by mature trees, so the jobsite limited access to sections of the roof. Photos: DaVinci Roofscapes

American installed approximately 23,000 square feet of the DaVinci product, Bellaforté Shake in Tahoe, a blend of four colors. The company also fabricated the new gutter system out of 20-ounce lead-coated copper with soldered seams. Approximately 600 feet of new gutters were installed.

Work began in late spring, and the 23-year-old existing roof was torn off in sections. GAF Weather Watch Water & Ice Shield was applied as a leak barrier, followed by Proof Synthetic Underlayment from ABC Supply. “We couldn’t install the tiles until the inlaid gutter was in place, so we used a synthetic underlayment to keep everything watertight during the tear-off process,” says Pole.

Gutters were installed in an 8-inch-by-8-inch trough. “There was a course or two of the DaVinci, and then the inlaid gutters were set into the roof, and the roof starts again,” notes Pole. “The trough area was also layered with ice and water shield before the copper gutters were put in.”

Transitions and flashings were also made of copper. “Everything on this job was 20-ounce lead-coated copper,” notes Pole. “All of the valleys, transition flashing, and the gutters were all lead-coated copper.”

The DaVinci synthetic shake tiles were easy to install, according to Pole. “They are nailed in place,” he says. “You can use stainless steel nails or hot-dip galvanized nails. In this case, we used 1-1/2-inch stainless steel ring shank nails.”

Low-Slope Areas

The low-slope roofs were covered with a GAF two-ply modified bitumen system. Michael McCory, project manager, headed up the crews on the five low-slope sections, which totaled approximately 2,700 square feet.

The observatory tower over the main entrance features a walk-out area with a modified bitumen roof system. Photos: DaVinci Roofscapes

The low-slope sections had different substrates. Two balconies had concrete decks, while two canopies and an area over the garage had wooden decks. Some of the flat roofs had paver systems, which had to be removed and replaced after the new system was installed.

Half-inch DensDeck Prime cover board from Georgia-Pacific was installed over the wood and concrete decks. The GAF mod bit system consisted of a Ruberoid 20 base sheet and Ruberoid Granular FR cap sheet in white. “It was applied in a cold-process adhesive,” says McCory. “No torches were used. A manufacturer’s inspection was part of the process for a 20-year warranty.”

The upper level of the tower features a small walk-out balcony. “That was probably the most difficult area,” notes McCory. “It was covered with pavers and difficult to reach. We had to remove the pavers and store them in the stairwell during the installation.”

A Challenging Jobsite

Logistics at the jobsite posed a few problems. “The hardest part was the observatory tower by the front entry,” Pole recalls, noting an 80-foot man lift was used to remove the existing cedar and install the synthetic shake. “On the tower, it was all lift work. For other parts of the project, workers on both the steep-slope and the low-slope portions of the roof were tied off at all times.”

Crews installed 23,000 square feet of Bellaforte Shake by DaVinci Roofscapes on the building’s main roof. Photos: DaVinci Roofscapes

The building is bordered by mature trees and a large pond, limiting roof access. “On the west side of the structure, the pond comes right up against the building,” Pole says. “We had to use a lift that could stretch over that pond to get that end of the roof.”

An Equipter mechanized debris hauler was used to get around narrow grassy areas near the building. “We used an Equipter, which is like a gas-powered, mobile dumpster, to drive around the building and enter the courtyard for our debris,” Pole says. “We have two of those pieces of equipment, which we use on a lot of our jobs to get the shingles out. They don’t damage lawns and help protect the landscaping.”

The building was occupied during the installation, so care had to be taken to ensure business was not disrupted and passers-by would be safe. “The village offices were open for business while we were working, and the police station was open as well,” notes McCory. “The tower and front entryway had to be completed on the weekend, as that was the only walkway for the public to get in.”

The police station had several doors, so crews had to coordinate with officers while replacing the roof on that section and let them know where they were setting up the crane. The courtyard area was also restricted at times.

“We obviously had to keep everything neat and organized and make sure we cleaned up every day to make sure nothing would bother the people working in the building and the residents who came in to the village hall to get permits or whatever the case may be,” McCory says. “You don’t want police cars getting flat tires.”

Communication is the key to meeting customers’ needs, especially with an occupied building. “Whoever the building owner is, I give him my cell number and make sure I have his,” Pole notes. “I try to stay in contact with them and let them know if anything is changing. I ask them if they have any questions or issues, or if their schedule is changing. On this project, they said it was like we were never even there, and that’s what we like to hear.”

Feedback from the city has been positive, according to Pole. “They are very happy with it,” he says. “The system has the look they wanted. It looks like shake, they had a lot of colors to choose from, and they won’t have the maintenance issues that they did with the cedar. And it will last a lot longer. They will save a whole roof replacement phase in the life of the DaVinci product.”

Pole believes his company’s diverse portfolio gives it an edge. “We’re one of very few union companies that have their own shinglers, flat roofing crews, and sheet metal workers in house. We also do waterproofing, metal wall panels and insulation,” he says.

“This project shows our strength — we can do it all.”

TEAM

Roofing Contractor: All American Exterior Solutions, Lake Zurich, Illinois, www.aaexs.com
Roof Consultant: Illinois Roof Consulting Associates, McHenry, Illinois, www.irca.com

MATERIALS

Steep-Slope Roof System
Synthetic Shake: Bellaforté Shake in Tahoe, DaVinci Roofscapes, www.DaVinciRoofscapes.com
Underlayment: Proof Synthetic Underlayment, ABC Supply Co. Inc., www.ABCsupply.com
Leak Barrier: Weather Watch Water & Ice Shield, GAF, www.GAF.com

Low-Slope Roof System
Modified Bitumen Base Sheet: Ruberoid 20, GAF
Modified Bitumen Cap Sheet: Ruberoid Granular FR, GAF
Cover Board: DensDeck Prime, Georgia-Pacific, www.DensDeck.com

Challenging Wintertime Installation Completed on Tight Schedule

Roofing work on the 250,000-square-foot expansion of Chicago Premium Outlets was completed in five months under challenging weather conditions. Photos: Johns Manville

The Chicago Premium Outlets 250,000-square-foot expansion includes 30 new or expanded stores, two new restaurants, 2,200 additional parking spaces, public art, outdoor fireplaces and a large pond. According to Mike Reynolds, senior project manager for Olsson Roofing Company Inc., headquartered in Aurora, Illinois, “Chicago Premium Outlets is more of a pedestrian mall since the expansion.”

Located approximately 40 minutes from downtown Chicago, the complex now features more than 170 stores including Adidas, Coach, Nike, kate spade new york, Movado Company Store, Saks Fifth Avenue Off 5th, Tommy Hilfiger, Vera Bradley, and Restoration Hardware. The reflecting pond is an inviting rest stop for shoppers, and it includes a play area and a pier-like pavilion with tables, chairs and umbrellas. To support the expansion, Olsson Roofing Company, the roofing contractor on the project, selected a TPO roofing system manufactured by Johns Manville.

A Challenging Installation

The project team faced two pressing challenges: weather and an aggressive timeline. The roofing-installation time frame fell between January and May, so the majority of the work needed to be completed during the coldest time of year. “We had our work cut out for us,” Reynolds says.

Photos: Johns Manville

The second challenge was the schedule. “The Olsson Roofing team worked several Saturdays and overtime to get the project finished as quickly as possible,” notes Reynolds. “We even heated the inside of the buildings to melt the snow on the roof and shoveled areas to make room for the product on the roof.”

Olsson Roofing chose to install the roof system using the RhinoBond induction welding attachment system from OMG Roofing Products. “We knew that RhinoBond would contribute to a successful installation of the TPO since we were dealing with below-freezing temperatures for most of the first 90 days,” Reynolds says.

Photos: Johns Manville

The 60-mil TPO was installed over two layers of ENRGY 3 roof insulation (one layer was 2 inches thick and the 2.5 inches). The majority of the roof surface features white TPO, but some EPDM was also used. “Olsson Roofing also used JM EPDM for the parapet walls since rubber is more flexible and quicker to install in cold weather and on vertical surfaces. They appreciated the ability to mix the systems and keep the project moving forward during cold-weather installation,” says JM sales representative Jason Conley. “With such a tight deadline, it was great to have the versatility of two excellent products — the durable 60-mil JM TPO and the flexibility of the JM EPDM, which provided just the right solution for our customer.”

TEAM

Architect/Specifier: FRCH Design Worldwide, Cincinnati, Ohio, www.frch.com
General Contractor: Graycor Inc., Oakbrook Terrace, Illionis, www.graycor.com
Roofing Contractor: Olsson Roofing Company Inc., Aurora, Illinois, www.olssonroofing.com

MATERIALS

Insulation: ENRGY 3, Johns Manville, www.JM.com
Membrane: 60-mil TPO in White, Tan and Light Grey, Johns Manville
Attachment System: RhinoBond, OMG Roofing Products, www.OMGroofing.com