Cassel Electric

The Challenge: An Aging Roof on a Working Industrial Facility

Cassel Electric, a well-established business operating out of an industrial warehouse facility in Spartanburg, SC, was facing the reality that every commercial building owner eventually confronts—an aging flat roofing system that had reached the end of its functional service life. The existing roof was no longer performing at the level required to protect the equipment, inventory, and operations inside the building. Water intrusion risks, declining energy efficiency, and overall deterioration in roof condition were creating growing concerns for the business.

For an industrial facility like Cassel Electric's, a roofing failure is not just a maintenance issue, it is a direct threat to business continuity. Electrical components, sensitive equipment, and daily operations all depend on a watertight, reliable building envelope overhead. The stakes were high, and the Cassel Electric team needed a trusted Spartanburg roofer with deep commercial experience who could deliver a complete roof replacement without unnecessary disruption to their operations.

Beyond the performance issues, appearance mattered as well. The facility's roof was a visible part of its overall profile, and Cassel Electric wanted a solution that would improve both function and curb appeal. They needed a consultative partner who would evaluate the full picture and recommend a roofing system built for long-term performance in the Upstate South Carolina climate.

The Solution: A Premium JM TPO Roofing System Engineered for Performance

Cannon Roofing approached the Cassel Electric project the way we approach every commercial engagement — as a consultative, ongoing partner invested in the long-term success of the building and the business it houses. Our team conducted a thorough assessment of the existing flat roofing system, evaluating structural conditions, insulation performance, drainage, and overall building requirements before making any recommendations.

Based on that assessment, we specified and installed a complete Johns Manville (JM) TPO roofing system — a single-ply thermoplastic membrane widely recognized as one of the highest-performing flat roofing solutions available for commercial and industrial applications. The JM TPO system was selected for its exceptional durability, superior resistance to ultraviolet exposure and chemical degradation, and proven energy efficiency benefits that reduce long-term operating costs for building owners.

Why JM TPO?

As an experienced Spartanburg roofing contractor, Cannon Roofing partners with industry-leading manufacturers like Johns Manville to ensure every commercial project receives premium materials backed by strong warranty coverage. TPO membranes offer a compelling combination of reflective properties for energy savings, heat-welded seams for long-term waterproofing integrity, and flexibility that accommodates building movement over time. For an industrial warehouse environment like Cassel Electric's facility, JM TPO was the right system for the job.

Project Results: Long-Term Protection for a Spartanburg Business

The completed Cassel Electric roof replacement stands as another example of the Cannon Difference in action. With a new JM TPO system in place, the facility now benefits from a modern, fully warrantable roofing system that delivers improved waterproofing, better thermal performance, and a cleaner overall appearance that reflects the professionalism of the business operating inside.

Scope of Work

• Full removal of the existing end-of-life flat roofing system

• Installation of new commercial-grade insulation to improve thermal performance

• Application of the JM TPO single-ply membrane across the entire roof surface

• Detailed attention to all flashing, penetrations, and edge details to ensure a fully watertight building envelope

• Focus on improving overall roof appearance alongside performance