BMC ISSAQUAH, ISSAQUAH, WASH.
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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