Projects: Office and Warehouse

BMC ISSAQUAH, ISSAQUAH, WASH.

Because of the steep slope of this roof, the Columbia Roofing & Sheet Metal crew installed 60-mil Sureweld HS (High Slope) TPO.

Because of the steep slope of this roof, the Columbia Roofing & Sheet Metal crew installed 60-mil Sureweld HS (High Slope) TPO.

Team

Roofing Contractor: Columbia Roofing & Sheet Metal, Kent, Wash.
Project Foreman: Rudy Sanchez

Roof Materials

Because of the steep slope of this roof, the Columbia Roofing & Sheet Metal crew installed 60-mil Sureweld HS (High Slope) TPO. HS TPO contains more fire-retardant chemicals in the membrane to help decrease the spread of fire. In addition, 1/4-inch Securock Glass-Mat Roof Board was installed, which gave the building a Class A fire rating while helping protect against moisture and mold.

TPO Manufacturer: Carlisle Syntec Systems
Roof Board Manufacturer: USG

Roof Report

BMC Issaquah manufactures doors and high-end cabinetry. The industrial building features a 525-square barrel roof that was very wet and experienced dry rot. The crew replaced nearly 150 sheets of plywood throughout the project.

The main challenge during installation was safety because of the extreme slope. The barrel roof is nearly 60-feet tall from the bottom to the top of the barrel, making installation on the edges difficult because crewmembers had to hot-air weld rolled product on a nearly vertical surface. The HS TPO added another level of difficulty while welding along the edges.

The project was completed on May 1, 2015.

PHOTO: Columbia Roofing & Sheet Metal

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Projects: Offices/Manufacturing

Accident Fund Holdings Inc. Headquarters, Lansing, Mich.

Team

Roofing Contractor: Bloom Roofing, Brighton, Mich.
Construction Manager: The Christman Co., Lansing
Architect of Record: HOK, St. Louis
Construction Engineer: Ruby + Associates Inc., Farmington Hills, Mich.

Roof Materials

Accident Fund Holdings Headquarters features a white TPO roof. PHOTO: Image Michigan and The Christman Co.

Accident Fund Holdings Headquarters features a white TPO roof. PHOTO: Image Michigan and The Christman Co.


An insulated cool roof minimizes the building and surrounding area’s heat-island effect.
White TPO Roof: Firestone Building Products Co.
Polyurethane-foam Adhesive: OMG Roofing Products
Caged Roof-hatch Grab Bars: LadderPort

Roof Report

Accident Fund Holdings, the nation’s 13th largest workers’ compensation insurer and a subsidiary of Blue Cross Blue Shield of Michigan, has been headquartered in Lansing, Mich., for more than 100 years. When it outgrew its office, the firm’s leaders were determined to stay in Lansing.

By revitalizing the iconic Ottawa Street Power Station, which was built along the Grand River in 1939 but had been mostly abandoned since 1992, the company would have 9 stories and 122,000 square feet to grow into. To support Michigan’s economy, 106 of the 118 contracts and suppliers that participated in the project were Michigan-based firms and 54 of those were Lansing-based.

To remove existing building elements, including catwalks, elevator/ stair shafts, framing and platforms, the team cut two 40-foot-long by 20-foot-wide roof hatches so a crane operator could move about 8,900 pieces of steel in and out of the building while the floors were built from the bottom up.

Since Accident Fund moved into its new headquarters, the building has won numerous awards, including the Governor’s Award for Historic Preservation from the state of Michigan and an Excellence in Economic Development Award from the Washington, D.C.-based International Economic Development Council. [Read more…]

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Nashville, Tenn., Begins Revitalization of Its City Center with a New Convention Space that Features a Truly Unique Roof

It isn’t often that a nightmare becomes a pleasant reality. Andy Baker, vice president of Raleigh, N.C.- based Baker Roofing, recalls the year he spent as project manager for the roofing of the new Music City Center in Nashville, Tenn., as one of his most challenging jobs. “The logistics, a tight spot downtown, the size of the project and everything that goes along with that—thousands of people trying to work and everyone needs their material in that area at the same time. Even the unique shape of the building made it hard,” Baker remembers. “We’re glad it’s done and we can look back on it now and say: ‘Wow! We did that.’”

The Music City Center was built to be the catalyst for more development in the SoBro neighborhood of Nashville, Tenn. It is intended to create a diverse economy that won’t be affected if flooding occurs, like in May 2010.

The Music City Center was built to be the catalyst for more development in the SoBro neighborhood of Nashville, Tenn. It is intended to create a diverse economy that won’t be affected if flooding occurs, like in May 2010.

Baker and his crew of up to 50 roofing workers have much to be proud of. The completed project is the largest capital construction project in Nashville’s history and was designed to bring prosperity to the area known as SoBro, or South of Broadway, which was affected by massive flooding in May 2010. The Music City Center lies outside the flood-prone areas and hopefully will be the catalyst for more development, which will create a diverse economy that won’t be affected if another flood occurs.

In addition to the Music City Center’s imaginative design that resembles various musical instruments, the building boasts a number of features that are ideal for a high-profile project. Many of these features are located in the most opportune of places—the roof. An Energy Star-qualified thermoplastic PVC membrane covers the 643,752-squarefoot roof while a 186,700-square-foot vegetated roof literally mimics the rolling hills of Tennessee’s Highland Rim. The rooftop also hosts a 211-kilowatt solar-power system on the 1-acre area that is over the Grand Ballroom, a rooftop space that resembles an acoustic guitar in shape. Lastly, the roof collects rainwater that is funneled to a 360,000-gallon tank before it is used to irrigate the site and flush hundreds of toilets inside.

Construction Challenges

Baker and his colleagues knew the Music City Center would present many challenges even before work began. “We knew it was going to be a logistical nightmare going in but then you have to live it,” he recalls. “You would think four city blocks would be a large enough area to work from but there were thousands of contractors working and receiving materials at the same time. Trying to keep truck drivers and suppliers happy was difficult. The community was great though; there were a lot of police officers around to direct traffic.”

Baker Roofing's team of up to 50 roofing workers spent one year working on the Music City Center.

Baker Roofing’s team of up to 50 roofing workers spent one year working on the Music City Center.

Installation also proved perplexing because of the roof’s undulating slopes of 1/4:12 to 12:12. Baker likens the rolls to waves and points out in some places they were almost conical in shape. In the areas in which there was no vegetated roof, the crew fastened two layers of 1.7-inch polyisocyanurate insulation followed by 1/4-inch roof board. Then a 60-mil thermoplastic PVC membrane in a light gray color was fully adhered to the assembly. The membrane features a lacquer coating to reduce dirt pickup.

Photos: Keri Baker

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