Creating Visual Impact with Copper and Silver Roofing Membranes

Whether you’re re-roofing a historic building that needs to maintain its aesthetics or you’re working on a new roof construction that has to make a statement, there are many instances in which a building owner would want his or her roof to generate a specific architectural appeal. The most difficult part of this is balancing durability and beauty with cost. Roof systems today have evolved to solve this conundrum. Now, copper and silver synthetic PVC membranes are being used to achieve the desired appearance of a metal standing-seam roof at a fraction of the cost without sacrificing performance.

Alternatives to Metal Roof Systems

Michigan State University replaced the existing slate roof system with SOPREMA SENTINEL Copper Art to provide the desired appearance and required long-term performance.

Michigan State University replaced the existing slate roof system with SOPREMA SENTINEL Copper Art to provide the desired appearance and required long-term performance.


Copper and silver synthetic membranes are great cost-effective alternatives to metal roofs. As flexible synthetic systems, these roof membranes are economical and easy to install by conforming to complex geometries.

Certain synthetic PVC roof membranes on the market today are offered in a variety of colors, some of which can mimic the look of metal roofing. While these roof membranes offer the proven long-term performance of flexible polyvinyl chloride (PVC), they provide the metal appearance via the addition of pigments that can chalk or fade as the pigmented membrane ages, therefore losing the desired aesthetic feature.

Conversely, SOPREMA SENTINEL Copper and Silver Art PVC membranes incorporate copper or aluminum metallic powder into the PVC formulation, producing an enhanced metallic look. Unlike pigmented membranes, SENTINEL Copper Art provides the same weathering capabilities as traditional standing seam copper—the SENTINEL Copper Art will patina as a traditional copper roof would. Silver Art is unique because the color will not fade due to the addition of metallic powder, and its surface layer is factory embedded with an acrylic shield treatment to resist dirt pickup and chalking. Copper Art and Silver Art membranes provide the long-lasting aesthetic appearance and waterproofing abilities of a metal roof.

Applications for Copper and Silver Membranes

Copper and silver roof membranes are often used on buildings where aesthetics are important. Historic buildings, churches, schools, government buildings and army bases are a few examples of where this type of roof membrane has been installed. These buildings may require a particular appearance or designers may simply wish to update the appearance or provide some panache. Mansards or other areas of visible existing light-gauge metal roof systems may be present on these buildings and flexible copper and silver roof membranes may be used as an alternative aesthetic solution.

SENTINEL Silver Art met Glenside Public Library’s leak-free and architectural needs, plus the roofing contractor liked that the SENTINEL membrane was easy to install and looked great upon completion.

SENTINEL Silver Art met Glenside Public Library’s leak-free and architectural needs, plus the roofing contractor liked that the SENTINEL membrane was easy to install and looked great upon completion.

For example, since 2007, the slate roof of the Snyder-Phillips residence hall at Michigan State University had been leaking. The university needed to replace the existing slate roofing system with a new system that would meet the aesthetic requirements of the historic building. SOPREMA SENTINEL Copper Art was installed as a cap sheet to provide the desired appearance and the required long-term performance.

In addition, the Glenside Public Library had an existing standing-seam roof that was tied-in to a low-slope ethylene propylene diene monomer (EPDM) roof. The tie-in between the two materials was problematic and continuously leaked. The library wanted to preserve the standing-seam appearance, but the noise created by wind and rain on the metal roof was a concern.

SOPREMA SENTINEL Silver Art was selected because it could provide the desired look while eliminating the tie-in issues between the steep- and low-slope roofing materials. SENTINEL Silver Art met the library’s leak-free and architectural needs, plus the roofing contractor liked that the SENTINEL membrane was easy to install and looked great upon completion. In addition to its aesthetic appeal, SENTINEL Silver Art also offered the benefit of significant noise reduction when compared to the former metal roof system.

Roofing Technology Advancements

As roofing technology advances, the options for creating a desired aesthetic have evolved. SENTINEL PVC Copper and Silver Art are high-performance roof membranes that provide the appearance of metal with the flexible, long-term performance of PVC, without the weight, expense or complexity of a traditional metal roof.

Project Profiles: Hospitality and Entertainment

Hilton Garden Inn, Cleveland

Team

General Contractor: HOBS Roofing, Canton, Ohio
Roofing Consultant: RS&M, St. Petersburg, Fla.

Because of the area’s harsh winter climate, the hotel’s reroofing project required a redundant roofing system that would be strong and durable. The SOPREMA system chosen is typically used in climates like this for that reason.

Because of the area’s harsh winter climate, the hotel’s reroofing project required a redundant roofing system that would be strong and durable. The SOPREMA system chosen is typically used in climates like this for that reason.

Roof Materials

Because of the area’s harsh winter climate, the hotel’s reroofing project required a redundant roofing system that would be strong and durable. The SOPREMA system chosen is typically used in climates like this for that reason.

Although the selection of this particular roofing system was easy, the installation presented a few challenges. The hotel’s roof includes a cell tower, containing a telecommunication terminal for all of Ohio. The installers had to be careful to avoid interference with the terminal when removing the original roof, as well as applying the new system. In addition, the mortar in some of the walls of the penthouse was deteriorating. The installation team had to flash in the ALSAN RS liquid system to keep water from penetrating and getting into the new roof system.

When the reroofing project began, installers first needed to remove the old coal-tar roof from the structural deck of the concrete building. Next, the deck was primed using Elastocol 500 and then a SOPRALENE 180 SP vapor barrier was heat-applied. This particular vapor barrier is commonly used in northern Ohio when reroofing.

Following the vapor barrier, the installation package was ready to be glued down using DUOTACK, SOPREMA’s low-rise foam adhesive. SOPRABOARD cover board was applied, followed by a layer of heat-applied SOPRALENE Flam 180 and then a heat-applied cap sheet of SOPRALENE Flam 180 FR GR. To finish the project, ALSAN RS 230, a PMMA two-part rapid-curing liquid flashing product, was applied over top in a custom color to match the roof to the aesthetic of the building.

Roof System Manufacturer: SOPREMA

Roof Report

Open since 2002, the Hilton Garden Inn stands 11-stories high and has 240 rooms. The hotel is within walking distance to Progressive Field and the CSU Wolstein Center, and is close to other downtown Cleveland entertainment and dining. The hotel features a business center, pool, fitness center and more. The reroofing project took place in summer 2014.

PHOTO: SOPREMA

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SOPREMA Announces New Scholarship Program

SOPREMA announces its new scholarship program, a commitment to the continued success and growth of the industry.

“We’re proud to be offering this scholarship to students,” says Sara Jonas, marketing manager, SOPREMA. “By investing in the next generation, we are pledging our commitment to continuing the advancement of the industry.”

The SOPREMA Scholarship was founded to assist students pursuing a degree in architecture, engineering, construction management or a similar field at an accredited four-year college or university. Up to seven scholarships will be awarded. The program is administered by Scholarship Management Services, a division of Scholarship America, a designer and manager of scholarship and tuition reimbursement programs for corporations, foundations, associations and individuals.

Waterproofing System Provides a Sustainable, Durable Product

SOPREMA Inc. has developed MAMMOUTH Neo.

SOPREMA Inc. has developed MAMMOUTH Neo.

SOPREMA Inc. has developed MAMMOUTH Neo, an eco-friendly, high-performing waterproofing system developed with new technology to provide a sustainable, durable product with increased longevity and UV stability.

MAMMOUTH Neo is comprised of an innovative and environmentally friendly elastomer made from organically sourced raw materials derived from 75 percent canola oil, using 30 percent less non-renewable fossil resources than traditional membranes. This high-quality composition allows the system to withstand the weathering elements longer, slowing down the aging process and contributing to a healthier building environment.

MAMMOUTH Neo system consists of two ultra-thin, ultra-lightweight and easy-to-install layers, reducing time and strain spent on the job. The system contains MAMMOUTH Neo Base SI, a self-adhered first layer and MAMMOUTH Neo Cap, a self-protected second layer, to provide the assurance and durability of a redundant system.

MAMMOUTH Neo is designed for new construction and renovation projects. MAMMOUTH Neo can be applied to concrete, wood or steel substrates. Tensile and wind resistance tests conducted on MAMMOUTH Neo resulted in a maximum permissible depression value equal to 4,989 Pascals (Pa).

SOPREMA to Host Building Envelope Clinic in San Francisco

SOPREMA Inc. will be hosting a Building Envelope Clinic in San Francisco on Oct. 16, 2015, for architects and consultants looking to further their knowledge, network and earn continuing education units. The clinic will be held at The Bentley Reserve, located at 301 Battery Street, San Francisco.

The Building Envelope Clinic will begin at 9:30 a.m. and conclude at 3:15 p.m. with a cocktail reception and prize raffle.

“We’re proud to be offering these clinics regionally to help support our consultants and architects,” says Sara Jonas, SOPREMA. “These courses continue to bring education to the forefront for our current partners, as well as those new to SOPREMA, while helping them to achieve credits to keep their accreditations.”

Courses offered during the Building Envelope Clinic include:

  • Proven and Durable: An Overview of SBS-Modified Bitumen
  • Wall Systems & Design (RCI/AIA Accredited Course)
  • Introduction to SENTINEL PVC
  • Below Grade Waterproofing (RCI/AIA Accredited Course)
  • PMMA/PMA Liquid Applied Roofing & Waterproofing Systems (RCI/AIA Accredited Course)

To RSVP, email jkendrick@soprema.us.

Membrane Is Factory Laminated to Cover Board

SOPREMA Inc. has developed SOPRASMART Laminated Boards, which combine SOPRALENE SBS-modified bitumen membrane and cover board into one installation layer, resulting in application consistency and complete adhesion.

SOPREMA Inc. has developed SOPRASMART Laminated Boards, which combine SOPRALENE SBS-modified bitumen membrane and cover board into one installation layer, resulting in application consistency and complete adhesion.

SOPREMA Inc. has developed SOPRASMART Laminated Boards, which combine SOPRALENE SBS-modified bitumen membrane and cover board into one installation layer, resulting in application consistency and complete adhesion. SOPRASMART is manufactured in a controlled setting, utilizing heat-welding equipment to laminate the SBS-modified bitumen coating of the base ply to the desired cover board. This eliminates the risk of delamination or wrinkling, and the sealed overlap protects the assembly from open flame intrusion when torch welding. SOPRASMART is available in a variety of cover-board options, including SOPRABOARD, high-density polyisocyanurate foam board, gypsum panels and high-density rock wool. It can be mechanically fastened or adhered using the DUOTACK adhesive.

NRCA to Hold Southern Regional Conference April 29

The National Roofing Contractors Association (NRCA) will hold its semi-annual regional conference April 29 at the Soprema Pompano Beach Regional Office and Training Facilities, Pompano Beach, Fla. The conference will highlight roofing industry issues.

Roofing professionals from across the Southeast and southern states are encouraged to participate in this one-day event. The conference will provide in-depth information about the most critical safety, risk management, technical, building code and legislative issues affecting roofing contractors.

Attendees also will hear from fellow roofing professionals about current issues, trends and challenges facing the industry.

NRCA members and non-members are encouraged to attend. View more information or register online.

PVC Resembles Metal Roofing

SOPREMA Inc. has developed SENTINEL PVC, a high-performance roof membrane.

SOPREMA Inc. has developed SENTINEL PVC, a high-performance roof membrane.


SOPREMA Inc. has developed SENTINEL PVC, a high-performance roof membrane that is manufactured using processes that provide rooftop performance, including SOPREMA’s Acrylic Shield surfacing. SENTINEL integrates silver and copper metallic powder in its Silver Art and Copper Art products, providing enhanced aesthetic appearance and weathering capabilities that are identical to metal roofs. The PVC is chemical-resistant, making it well suited for buildings that are prone to grease and oil exposure or factories with exhausts on the roof. SENTINEL PVC is also fire- and wind-rated by Underwriters Laboratories and FM Approvals.