Stanford Hospital Project Demands Versatility and Surgical Precision

The new Stanford Hospital is currently under construction in Palo Alto, Calif. The 824,000-square-foot facility connects to the existing hospital by a bridge and tunnel. The project includes a multi-level parking garage and with additional office buildings. Photo: Stanford Health Center.

The new Stanford Hospital is currently under construction in Palo Alto, Calif. The 824,000-square-foot facility connects to the existing hospital by a bridge and tunnel. The project includes a multi-level parking garage and with additional office buildings. Photo: Stanford Health Center.

Dennis Olson is used to dealing with large health care projects with multiple scopes of work, but the new Stanford Hospital project he’s currently working on might be the most challenging job he’s ever faced.

“I’ve never been involved with a project that’s been this complex and this difficult to roof and manage,” says Olson, the owner of Letner Roofing in Orange, Calif. “There are 16 different types of roofing and waterproofing systems, and each one is a little bit different at each location around the building.”

Located in Palo Alto, Calif., the new Stanford Hospital is an 824,000-square-foot facility that connects to the existing hospital by a bridge and tunnel. Olson is convinced his company is perfect for the job. He has been in the roofing industry for almost four decades, and he’s worked at Letner for more than 30 years. Olson worked his way up through the company as a foreman, project manager, and estimator before becoming the president and owner 15 years ago. “I have been estimating and managing health care projects for more than 25 years,” he says. “This job is right up our alley.”

The Company

Located in Orange, Calif., Letner Roofing specializes in commercial work including all types of roofing and below-grade waterproofing systems. “We are licensed with all of the major manufacturers to install their products,” Olson says. “We install basically every roofing and waterproofing system that’s available to the market. We have a sheet metal division that produces metal wall panels, roofing and general sheet metal.”

The new hospital features green roofs on the main hospital, central plant and parking structure. The garden roof section on level three of the main hospital building is shown here. Photo: Stanford Health Center.

The new hospital features green roofs on the main hospital, central plant and parking structure. The garden roof section on level three of the main hospital building is shown here. Photo: Stanford Health Center.

Olson believes the company’s success begins with its great alliances with top general contractors and owners. “Our strengths are our customer service and quality control, and our ability to get projects done efficiently and on time,” he says. “I think that’s why general contractors choose us. We do what we say we’re going to do, we do it efficiently, and we take a lot of pride in the finished product.”

Communication is the key, according to Olson. “We have weekly sales meetings where all of the project managers and sales staff get together,” Olson says. “We share information, which allows us to learn from our failures and successes. It’s a team atmosphere. There is no real competition between the sales guys other than the innate competition that you each have to be better. We don’t compete against each other; we all work together for the common goal.”

Keeping the lines of communication open with industry partners is a key part of the puzzle. “As far as communication with the general contractor, that’s pretty simple, but a lot of people miss that,” he says. “You have to return phone calls. You have to return emails. If you have an issue on a project, handle the issue efficiently. Bring scheduling problems or details issues to the attention of the general contractor early. Nobody like to be surprised. People like to be informed.”

Due to their expertise in design-build situations, members of the Letner team are often called in by general contractors at the design and budgeting stage to offer advice on the right materials and methods for a project.

That was the case with the new Stanford Hospital project and general contractor Clark/McCarthy—a joint venture of Clark Construction Co. and McCarthy Building Cos. “McCarthy is a contractor I’ve been dealing with for more than 25 years. I’ve done a lot of health care projects with them, so when Stanford came out, they certainly wanted our input and help developing the budgets,” notes Olson.

Underground, Overhead

For Letner, the project involved several scopes of work including roofing on the main hospital and below-grade and underslab waterproofing.

Below-grade work included a pre-applied blind-side waterproofing application by Cetco. Letner also waterproofed underground tanks for domestic water, fire suppression, and sewage with a hot rubber system by Gaco Western. “The hospital was built for the worst-case scenario,” Olson notes. “If there is a big earthquake, and services are interrupted, the hospital can sustain itself for a while.”

This aerial photo shows the new Stanford Hospital, which is currently under construction. When completed in 2018, the complex will showcase 16 different roofing systems on 12 different elevations. Photo: Stanford Health Center.

This aerial photo shows the new Stanford Hospital, which is currently under construction. When completed in 2018, the complex will showcase 16 different roofing systems on 12 different elevations. Photo: Stanford Health Center.

As the superstructure was being completed, the roofing work began. “As I said, there are 16 different roofing systems on this project. There are 12 different elevations,” notes Olson.

Systems range from urethane and urethane and polymethyl methacrylate (PMMA) coatings to split-slab and inverted hot rubber systems, PVC roof systems and hybrid dual waterproofing system. The largest roofing systems include a Sarnafil PVC roof on the main hospital and a hot rubber system by Cetco for use under the garden roofs. Letner is installing garden roofs on the third floor of the main hospital and another on the central plant building.

Both of these garden roofs were constructed over flat concrete decks. The first step was to provide positive slope for drainage. Cell-Crete Corporation of Hayward, Calif., provided lightweight insulating concrete (LWIC), which was used to create positive slope. After the LWIC cured, crews from Cell-Crete installed quarter-inch cement board over the LWIC.

The hospital’s surgery rooms are directly beneath the garden roof on the main hospital, so the system has to be bulletproof. “This roof area requires intricate detailing along with a Cetco hybrid dual waterproofing system,” Olson states. “After the lightweight concrete and cover board are in place, Letner will install 60 mils of Hydrofix urethane membrane, followed by Cetco Corflex, a unique combination of a re-enforced KEE membrane bonded to an active polymer core membrane. Both garden roof areas will be protected with an in-place leak detection system by Internal Leak Detection.”

The overburden at the hospital garden roofs will include insulation, drainage mats, various types of plants and trees and pedestal paver systems.

Letner installed PVC roof systems from Sika Sarnafil level three of the hospital and on the main roof of the hospital. The 60-mil PVC membrane was installed over insulation and DensDeck cover board. Insulation was a minimum of R-20 near the drains. Some sections of the PVC were topped by ballast rock.

On the adjoining multi-level parking deck, Letner installed PVC roofs on two office buildings. The rest of the roofing and waterproofing work on the parking structure, including another garden roof, was completed by Courtney Waterproofing and Roofing of Irvine, Calif.

Safety Precautions

Letner and the general contractor help ensure safety is always top of mind at the site. “On this project, like any other, the safety issues were extremely important,” notes Olson. “We have our crews stretch and flex daily, and everyone must wear the personal protective equipment required for each task. Fall protection is a concern at every elevation, and hot rubber is extremely hazardous activity that requires additional protection and monitoring.”

Elastizell lightweight insulating concrete from Cell-Crete was used to provide slope for drainage on the flat structural concrete decks. It was later topped with cement board. Photo: Cell-Crete

Elastizell lightweight insulating concrete from Cell-Crete was used to provide slope for drainage on the flat structural concrete decks. It was later topped with cement board. Photo: Cell-Crete

The perimeter walls were being constructed during the project, so extra precautions had to be taken at the roof edge. “We had to wear harnesses and be tied off at all times,” Olson says. “We are very concerned about safety. We have a safety manager, and he does a very good job of identifying possible hazards on each job. We identify those per deck and apply the proper safety measures required for each elevation.”

Waterproofing the tanks also required special care. “The domestic water, waste and fire tanks and are in the ground, so you have to have people certified to do that work with specialized equipment,” Olson states.

Challenging Schedule

Construction of the hospital is still underway. Work is expected to be completed in 2018. The sheer size and multiple scopes of work were obvious challenges on the project, but the schedule was also tight—and subject to change. Some roof details were changed and others were developed as the job progressed, so Letner’s crews had to make some adjustments on the fly. Letner continues to work with the consultant on the project, ABB, to iron out the details.

“Sometimes you have to adjust the schedule when you are coordinating the work with other trades,” Olson notes. “The schedule, coordinating with other trades and the number of changes on the job have been the biggest issues we’ve faced. It’s is still a challenge, as the work is ongoing.”

When it came time to stage equipment and materials, the large job site suddenly seemed small. “The site was kind of tight, so of course logistics came into play with loading and off-loading each different area,” he says. “Some areas were hard to get to, and sometimes we had to wheel the product through corridors to get to the decks. Not everything was easy to get to. Logistics were difficult, but we were able to overcome those problems. Clark/McCarthy helped out quite a bit with logistics and loading.”

Despite the complexity of the job, the installation work has gone smoothly, according to Olson. “As far as the application for our field crews, there’s not that much difficulty for them. They are all very talented at what they do,” he says. “It’s just a very difficult building, and there are a lot of details that are not typical.”

The key to overcoming difficulties? “It’s constant communication,” Olson says. “Our strengths are our management teams, from the field operations to office staff. We’re honest with our customers. They understand the level of customer service and quality we deliver. Our success is a testament to the service we provide to our customers. We are often praised for our service and workmanship, and we are very proud of our quality installations as well.”

On the adjoining multi-level parking deck, Letner Roofing installed PVC roofs on two office buildings. The rest of the roofing and waterproofing work on the parking structure, including another garden roof, was completed by Courtney Waterproofing and Roofing. Photo: Stanford Health Center.

On the adjoining multi-level parking deck, Letner Roofing installed PVC roofs on two office buildings. The rest of the roofing and waterproofing work on the parking structure, including another garden roof, was completed by Courtney Waterproofing and Roofing. Photo: Stanford Health Center.

TEAM

Architect:
Rafael Viñoly Architects in association with Lee, Burkhart, Liu Inc.

General Contractor:
Clark/McCarthy—a joint venture of Clark Construction Co. and McCarthy Building Cos.

Roofing and Waterproofing Contractors:
Main hospital building and offices: Letner Roofing, Orange, Calif.
Adjoining parking structure: Courtney Waterproofing and Roofing, Irvine, Calif.

LWIC Provider and Installer:
Cell-Crete Corp., Hayward, Calif.

Firestone Acquires Silicone Roofing Systems Provider

Firestone Building Products Company LLC has announced its acquisition of Gaco Western, a provider of silicone roofing systems, waterproofing systems and spray foam insulation. The deal, which includes all assets and operations held by Gaco, closed April 3, after a definitive agreement was signed and announced earlier this year.

The acquisition allows Firestone to introduce even more options to customers with Gaco’s silicone and acrylic liquid coatings. The enhanced portfolio creates alternative solutions when full roof tear-offs and rebuilds are not feasible, and it presents contractors with products requiring less labor-intensive installation.

“Combining the best of two brands, Firestone and Gaco, represents an opportunity for growth and long-term value as we aim to create new levels of service and innovation in our industries,” says Tim Dunn, president of Firestone Building Products, Bridgestone Americas Inc. “Operations will conduct business as usual across all teams as we begin bringing our portfolios, employees, best practices and distribution platforms together to continue serving as a total solutions provider for our collective customers.”

In addition to expanding Firestone’s roofing product portfolio with silicone polyurethanes, epoxies and acrylic liquid coatings, the deal offers new positions in commercial and residential sectors with decking and waterproofing products that protect pedestrian surfaces, concrete, metal and plywood, and open- and closed-cell foam products which protect and insulate buildings.

Gaco products will continue to be sold under the Gaco brand and will continue to be made at a state-of-the-art manufacturing, research and development facility in Waukesha, Wis.

Financial details of the transaction are not being disclosed.

Firestone Acquires Provider of Waterproofing, Spray Foam Insulation Solutions

Firestone Building Products Company LLC (Firestone) has announced that it has reached a definitive agreement to acquire Gaco Western (Gaco), a provider of waterproofing and spray foam insulation solutions for a variety of commercial and residential applications. The acquisition strengthens Firestone’s leadership in commercial roofing and offers positions in residential and commercial building products, reinforcing its commitment to be a leader in the building envelope solution. Firestone Building Products is part of Bridgestone Americas, the largest subsidiary of Bridgestone Corp., a tire and rubber company.

“This acquisition supports our strategic plan to penetrate adjacent product segments,” says Tim Dunn, president of Firestone Building Products. “Adding Gaco’s product portfolio will expand our offering, broaden our customer base, and reaffirm our commitment to being a total solutions provider. We are now also in a position to better capitalize on the demand for liquid coating products and are excited about the opportunity to unearth the value that exists in the combination of the two businesses.”

Financial details of the transaction are not being disclosed. The acquisition is expected to be completed before the end of the first quarter 2017, subject to regulatory approvals and other customary closing conditions.

Founded in 1955, Gaco is privately-owned and headquartered in Seattle. With brands including GacoFlex, GacoRoofFoam and GacoWallFoam, the company produces silicone polyurethanes, epoxies and acrylic liquid coatings for roofs; decking and waterproofing products that protect pedestrian surfaces, concrete, metal and plywood; and open- and closed-cell foam products which protect and insulate buildings. All Gaco products are made at its manufacturing, research and development facility in Waukesha, Wis.

The combination will allow Firestone to provide customers with additional products for their roofing needs. By delivering a repair product at a competitive price point, Gaco’s portfolio of silicone and acrylic liquid coatings offers an alternative for situations when full roof tear-off and rebuild are not an available solution. For contractors, these products allow for less labor-intensive installation, reducing costs. Additionally, the transaction enables Firestone to offer its customers access to Gaco’s waterproofing solutions.

Firestone is a leader within the roofing industry and has a vision for the broader building envelope, combining service, product, and innovation, with a substantial distribution platform. We are excited at the prospects of joining Firestone as it allows us to continue to drive R&D, deliver products to our customers, and offer additional career opportunities to our employees,” says Peter Davis, Gaco chairman and CEO.

Gaco Western Promotes Jason Loftus to Director of Sales

Gaco Western promotes Jason Loftus to director of GacoFlex sales.

Gaco Western promotes Jason Loftus to director of GacoFlex sales.

Gaco Western is pleased to announce the promotion of Jason Loftus to director of GacoFlex Sales. Jason came to Gaco in 2011 as a distribution manager and later became the national distribution manager leading the distribution sales team. Jason will now provide leadership over the entire GacoFlex Sales organization.
 
Chuck Skalski, president of Gaco Western, is excited about Jason’s new role. “Gaco Western is pleased to elevate Jason to the director of GacoFlex Sales position. Since Jason began his tenure at our company, he has displayed industry knowledge and relationships that have been a major benefit to Gaco Western. Jason has also shown leadership qualities that will help guide the GacoFlex Division to the next level of excellence.”
 
“I am honored to continue my career with Gaco Western as director of GacoFlex Sales,” says Jason. “I look forward to the years ahead, working alongside our group of talented Gaco family members.”

Sprayfoam Event Features Steve Thomas as Keynote Speaker

The Spray Polyurethane Foam Alliance (SPFA) has announced that author and Emmy Award-winning television personality Steve Thomas, from PBS’s This Old House, will be the keynote speaker for the Sprayfoam 2017 Convention and Expo. Being held now through Feb. 1, in Palm Springs, Calif., the official national convention of the Spray Polyurethane Foam industry features three days of educational sessions, an 35,000-square-foot exhibit hall, an industry awards ceremony, professional certification programs, an annual golf tournament, and other special events and features.
 
Steve Thomas will deliver the official Sprayfoam 2017 keynote address on January 31st at 9 a.m. He is currently spokesman for Habitat for Humanity International, with an emphasis on Builders Blitz and the ReStore. Steve Thomas completed three seasons hosting Planet Green’s Renovation Nation, a sustainable building show. During his 14 years as the host of a home improvement series, This Old House, he became known as a home enthusiast and helped catapult the show to the top of PBS’s most-watched ongoing series list. He also contributed to the debut of Ask This Old House, the series in which viewer questions are addressed on-air, as host during its first year. Steve was honored with a 1997 – 1998 Daytime Emmy Award and a total of nine nominations for Outstanding Service Show Host. He is a speaker, video producer, blogger, photographer, renovator and branding consultant. He also consults on sustainable building and renovation for clients across the U.S. and is currently writing a book.
 
“As a longtime sustainable building and renovation expert, Steve Thomas is a major coup for our annual event,” says Kurt Riesenberg, executive director of the Spray Polyurethane Foam Alliance (SPFA), the official organizer of the show. “His enthusiasm for quality craftsmanship in the built environment, as demonstrated in his hosting This Old House, and his high profile role with Habitat for Humanity, align with the Sprayfoam Convention & Expo’s goal of providing education and business insight to the industry.”
 
During his keynote, Steve Thomas will likely speak about his various experiences working with spray foam, both personally and professionally, as well as his current renovation efforts, while providing attendees a great perspective on the business that they will be able to bring back to their customers. He will utilize any remaining time to answer audience questions about his life-long passion for building, his time spent on This Old House and his upcoming book.
 
Sprayfoam 2017 Convention & Expo’s event agenda includes 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; the 12th Annual Industry Excellence Awards Ceremony highlighting innovation, best practices and excellence in SPF projects; 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; a entertaining Close-Out Reception and Networking Party.
 
The SPFA offers Professional Certification Program testing onsite. Testing is 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 program built to advocate best practices and safety in the installation of SPF. The standards-driven program is ISO 17024 compliant, was developed by committees of industry stakeholders in collaboration with OSHA, NIOSH and the EPA. Due to an abundance of PCP scholarship sponsors the Field Exams needed to obtain the Master Installer certification will be offered for free to candidates at the show for the second year in a row.
 
“Sprayfoam 2017 is the spray foam event of the year,” says John Achille, president of the SPFA. “As an annual event serving our industry with education, onsite certification, networking opportunities and more, it is the place to be if you are part of the spray polyurethane foam marketplace.”
 
Attendance for the Sprayfoam 2017 Convention & Expo is expected to exceed 1,200 individuals representing the complete Spray Polyurethane Foam industry and value chain, as well as the general public.
 
Premier sponsors of Sprayfoam 2017 include: Accella Polyurethane Systems, CertainTeed, Chemours, Covestro, Gaco Western, Honeywell, Icynene, Lapolla, NCFI Polyurethanes, and Polyurethane Machinery Corp. Premier Media Sponsors include “Sprayfoam Professional” (the official publication of the Sprayfoam 2017 event), “Building Enclosure”, “Roofing Contractor”, and “Walls & Ceilings” magazines.  

Silicone Roof Patch Repairs Roof Leaks With One-Step Application

GacoPatch creates a seal within 30 minutes of application.

GacoPatch creates a seal within 30 minutes of application.

Gaco Western has developed GacoPatch, a fiber reinforced silicone roof patch designed for repairing roof leaks in a one-step application. Primers, seam tapes and top coats are not required.

A waterproof seal is created within 30 minutes of applying GacoPatch, protecting roofs from leaks. GacoPatch is suitable as a standalone roof patch and will not degrade under UV, temperature extremes or ponded water. The 2.5-gallon wide top pail makes GacoPatch application easy to do with a trowel or a brush.
 
GacoPatch comes with a 25-year limited material warranty.
 
GacoPatch is available through your local Gaco dealer. MSRP is $98.97. Visit here to find product locally.

Gaco Western Appoints Employee as President

Gaco Western is pleased to announce the appointment of Chuck Skalski as president of the company after over 25 years of dedication and leadership.
 
Chuck joined Gaco Western in 1991 as an Area Manager to develop the Ontario Canada, Ohio, Pennsylvania and Western New York markets. In 1993 he spearheaded the launch of Gaco Silicone coatings into the specification market, and was subsequently promoted to District Sales Manager for the Eastern US in 1995. In 2001 Chuck was named as the sales lead for the Leadership team at Gaco Western and assumed National Sales responsibilities. 

While on the Executive Leadership Team at Gaco, Chuck was promoted to VP of Sales in 2003 and worked to promote coating sales as well as GacoWallFoam insulation awareness throughout the US and Canada. Chuck became VP of Sales for the GacoFlex division in 2008, and in 2013 he launched the joint GacoFlex/Distribution model that is currently in place today. 
“This is really exciting and a quite humbling point in my career at Gaco Western. I’m looking forward to building Gaco to be even bigger and better than what it is today.”  – Chuck Skalski
 
Chuck is a 6 year US Navy Veteran who served during the Lebanon Conflict as well as recovery efforts of the space shuttle Challenger disaster. While in the US Navy he attended Golden Gate University via satellite location. 

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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Roof Assembly Passes Severe Hail Classification

Gaco Western announces their roof assembly passes Severe Hail classification by FM Approvals. The GacoRoofFoam F2733 spray applied polyurethane foam coated with GacoFlex S2100 Cleanable Solvent-free Silicone Coating assembly was tested to meet: hail, wind uplift, corrosion, foot traffic, leakage resistance and accelerated weathering performance. Gaco’s is the only reflective silicone assembly to receive the Severe Hail classification. In addition, this assembly has the highest recycled content in the industry.

Building owners and design professionals are looking for a durable roofing solution. Gaco Western’s R & D team rose to the challenge to develop a system that stands alone and achieves a durability and toughness rating that eclipses other offerings in the reflective silicone coating market. The cleanability factor of GacoFlex S2100 adds to the longevity of this system as it maintains higher whiteness and solar reflectivity than other silicones.

FM Approvals certification is valuable to consumers because it means they can be confident they are getting a tested roof assembly, not a collection of products and parts that may or may not perform to expected levels. Severe Hail classification takes it a step further to give you confidence that Gaco Western offers a solution with strength and endurance.

Chuck Skalski, VP of Sales, GacoFlex commented, “Gaco is pleased to be providing our industry an FM Approved assembly that has been proven to withstand the most hail episodes. This is another testament to our commitment to innovation and providing solutions that last for many years.”

Silicone Roof Coating Fixes Roof Leaks

Gaco Western's GacoElastomeric Silicone Roof Coating

Gaco Western’s GacoElastomeric Silicone Roof Coating

Gaco Western‘s GacoElastomeric Silicone Roof Coating offers customers a better choice for fixing roof leaks. Because acrylic elastomerics have issues with ponded water and UV degradation, they do not provide a lasting solution.

Not only does GacoElastomeric withstand ponded water, it remains flexible over time whereas acrylics become hard and brittle. It has higher solids than acrylics so more coating stays on the roof to provide better coverage and because of the unique chemistry it can be rained on after just two hours and won’t wash off the roof.