The commercial roofing conversation in Middle Tennessee often comes down to one key question: which membrane is the right choice? For flat and low-slope commercial buildings in Murfreesboro, single-ply roofing is widely used, but selecting between TPO, PVC, and EPDM should be based on the specific needs of the building rather than a one-size-fits-all approach. Each system performs differently depending on exposure, usage, and long-term goals.
Glick Roofing Systems provides single-ply roofing installation for properties in Murfreesboro, TN and the surrounding region. Call (800) 821-0205 to find out which roofing system is the right fit for your building.
This article explains the differences between the three primary single-ply membrane types, how each performs in Tennessee’s climate, and the key building factors that should guide the selection process for commercial properties in Murfreesboro.
Single-Ply Roofing System Comparison
All three single-ply membrane types are installed on commercial flat roofs across Tennessee, and all three can perform well when properly specified and correctly installed. The differences between them are not marketing distinctions. They are material properties that matter in specific conditions, and matching the right membrane to a building’s actual use and environment is what separates a roof assembly that performs for 20-plus years from one that struggles before its warranty expires.
TPO: The Standard for Single-ply Roofing
TPO is the most widely specified single-ply membrane on new commercial roofs in Middle Tennessee, and the reasons are straightforward. The white reflective surface reduces rooftop temperatures during Murfreesboro summers, cutting cooling loads on buildings that run HVAC systems hard from May through September. Heat-welded seams create a fusion bond at every lap that, when installed with calibrated equipment, is stronger than the field membrane itself. TPO membranes available in 45-mil, 60-mil, and 80-mil thicknesses allow the specification to be matched to the building’s foot traffic and rooftop equipment demand. For most commercial flat roofs in Murfreesboro that do not have unusual chemical exposure or specific performance requirements, a properly specified TPO system represents the most practical combination of performance, longevity, and installation efficiency.
PVC and EPDM: When Tennessee Buildings Need a Different Answer
PVC single-ply is the right specification when a building has rooftop grease exhaust, chemical exposure, or restaurant ventilation systems where cooking oils come into contact with the membrane surface. TPO degrades under prolonged grease exposure. PVC does not. For food service buildings, commercial kitchens, and any facility where exhaust from cooking operations reaches the roof, PVC is the correct membrane regardless of cost differential.
EPDM occupies a different position in the single-ply market. It is a proven rubber membrane with a long installation history on commercial buildings, and it performs reliably in applications where longevity and a lower upfront investment are the primary considerations. EPDM’s black surface absorbs more heat than white TPO or PVC in Tennessee’s summer conditions, which matters on buildings where cooling efficiency is a priority. On buildings where it is not, EPDM remains a legitimate and durable option.
Installation Factors That Impact Performance
Membrane selection is only part of what determines how a single-ply roof performs. The installation decisions made on the day of the project carry equal weight:
- Seam welding temperature and travel speed must be calibrated to ambient and membrane temperature conditions on the day of installation, not set once and left unchanged regardless of conditions
- Membrane must be allowed to relax before seaming to prevent tension in the laps that can cause separation under thermal movement
- All penetrations, curbs, walls, and edge terminations must receive proper flashing details using manufacturer-compatible accessories, not field-improvised solutions
Single-Ply Roofing Contractor
Choosing the right single-ply roofing membrane for a commercial building in Murfreesboro, TN starts with a clear understanding of how the building is used, the conditions on the roof, and the level of performance expected over the long term. Factors like exposure, drainage, and maintenance expectations all play a role in determining the best system for the property.
Glick Roofing Systems provides single-ply roofing installation for properties in Murfreesboro, TN using Carlisle, Duro-Last, and GAF systems. Call (800) 821-0205 to schedule an assessment and find the roofing system that best fits your building.
FAQ
Can single-ply roofing be installed over an existing membrane in Murfreesboro?
A single-ply recover is possible over a dry, well-adhered existing membrane when code allows and the deck can support the added load.
How does single-ply roofing hold up to Tennessee hail events?
60-mil and 80-mil membranes provide significantly better hail resistance than 45-mil options, and some manufacturers offer rated hail endorsements on qualifying systems.
Is single-ply roofing compatible with rooftop solar installations?
Yes, ballasted solar racking systems work well on single-ply roofs, and penetration-based mounting is compatible with proper flashing details.
What attachment methods are available for single-ply roofing in Tennessee?
Mechanical fastening, full adhesion, and ballasted installation are all available, with selection based on deck type, wind uplift requirements, and building use.