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The
new fire station’s 140-square roof was installed by West Roofing Inc. of Dallas. To ensure a
clean, smooth installation, West Roofing waited until all other subcontractors
had finished their work on the roof before starting the installation.The roof
system consisted of mechanically fastened 3-inch thick polyisocyanurate board,
with a 3/4-inch thick layer of expanded perlite board hot mopped on top of it
with Type IV asphalt. The crew then hot-mopped the CertainTeed Flexiglas FR
Base Sheet to the perlite board, and the Flintlastic GTA CoolStar Cap Sheet was
torch-applied on top of the base sheet
The extreme heat of a Texas summer makes the operation of air conditioning systems a necessity for most - the National Weather Service reports that summer daytime temperatures in Dallas “frequently exceed 100 degrees.” Unfortunately, with this necessity comes increased energy usage and higher utility bills.
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When the city of Dallas hired Brown Reynolds Watford (BRW) Architects Inc. of Dallas to design a new structure for the city’s Fire Station No. 33, cool roofing was an important component of the design. Seeking LEED Silver certification for the project, the architects specified a CertainTeed two-ply modified bitumen roof system (CertainTeed GTA-C-B2) with a Flintlastic GTA CoolStar Cap Sheet - a mineral-surfaced APP modified bitumen membrane with reflectant CoolStar acrylic coating.
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The city hired Dallas contractor West Roofing Inc. to install the 140-square roof this past April. To ensure a clean, smooth installation, West Roofing waited until all other subcontractors had finished their work on the roof before starting to minimize the possibility of damages or blemishes from post-installation foot traffic.
“The biggest challenge of this project was making sure nobody marked up the roof,” said Andy Halusek, Vice President of West Roofing. “We wanted the pristine, white look of the roof to remain after we finished. So, the less traffic you have on the roof, the better.”
Working with a crew of nine, West Roofing began by mechanically fastening a 3-inch thick polyisocyanurate board to the roof deck and then hot-mopping a 3/4-inch thick layer of expanded perlite board on top of the Iso with Type IV asphalt. The crew then hot-mopped the CertainTeed Flexiglas FR Base Sheet to the perlite board. Rounding out the installation, the Flintlastic GTA CoolStar Cap Sheet was torch-applied on top of the base sheet.
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When
the city of Dallas decided to design a new structure for the city’s Fire
Station No. 33, cool roofing was an important component of the design. Here the
building is shown under construction.
“We were pleased with how the factory-applied coating saved us time,” Halusek said. “Time is money.”
The crew next installed roof flashings, and the job was complete after seven days of work.
The job ran without a hitch and produced a reflectant roof, with a clean, smooth appearance. The crew found the system very easy to work with.
“I’ve had no problem with CertainTeed’s products,” Halusek said. “They make the best torch-grade modified membranes in the industry, and I’ve been using their products for years. We were able to get in there, turn the job around and leave. This was a good, clear-cut job.”