Thermoplastic polyolefin, or TPO, has quickly become one of the most trusted single-ply roofing systems for commercial buildings throughout Southfield MI. Business owners appreciate its energy-efficient white surface, strong resistance to UV exposure, and exceptional long-term durability. Yet many decision-makers still wonder what determines the strength and performance of a TPO single-ply roof. Three factors play the largest role: membrane thickness, reinforcement, and the quality of heat-welded seams.
Core Values Construction is proud to help building owners understand the science behind TPO roofing so they can make confident choices when it’s time for repair, replacement, or new installation. To learn more, call 517-260-3957 today and schedule a consultation.

TPO Single-Ply Roofing Systems Performance
Below is a clear, educational look at what separates high-quality TPO systems from average ones.
TPO Thickness Matters
TPO membranes are typically available in several common thicknesses, most often 45 mil, 60 mil, and 80 mil. These numbers represent the total membrane thickness measured in thousandths of an inch. While even the thinnest option can deliver reliable performance when properly installed, thicker membranes offer added durability that many commercial buildings in Southfield MI need.
Thicker TPO is more resistant to punctures from foot traffic, falling branches, tools, and hail. It also provides greater long-term protection against shrinkage and UV wear. For buildings with rooftop HVAC equipment, frequent maintenance visits, or exposure to harsh weather, 60-mil or 80-mil TPO is usually the preferred choice. Core Values Construction can help evaluate your roof’s condition and determine the best thickness for your specific property and budget.
Reinforced vs Non-Reinforced TPO
Another important factor is whether the membrane includes a scrim reinforcement layer. Reinforced TPO contains a woven polyester or fiberglass scrim laminated between the top and bottom plies. This scrim dramatically improves tear strength, dimensional stability, and resistance to stretching. Most commercial roofs today use reinforced TPO because it holds up better under foot traffic and temperature fluctuations.
Non-reinforced TPO still has value in certain detail work, such as flashing around pipes or tight corners, because it is more flexible. However, it is typically used as an accessory material rather than the main roofing sheet. When you choose Core Values Construction, you receive reinforced TPO membranes for the primary roof field areas to ensure maximum long-term durability.
The Importance of Heat-Welded Seams
One of the defining advantages of TPO roofing systems is the ability to fuse seams using hot-air welding. Instead of relying on adhesives or tapes, installers use specialized equipment that melts the top layer of the membrane and bonds it to the adjoining sheet. When performed correctly, these seams become one continuous piece of material, often stronger than the membrane itself.
This is one of the main reasons TPO is so popular across Michigan’s commercial and industrial roofing sector. Welded seams resist water intrusion, withstand temperature swings, and remain stable through freeze-thaw cycles. In Southfield MI, where winters can be tough and summers can be humid, a fully heat-welded TPO system provides year-round reliability.
The quality of these welds directly depends on the installer’s skill, the accuracy of temperature settings, and the speed of the weld. Core Values Construction follows strict manufacturer guidelines, uses calibrated equipment, and conducts test welds throughout the installation to ensure every seam meets or exceeds performance standards.

Why Building Owners Choose Single-Ply TPO
Understanding the role of thickness, reinforcement, and heat-welding makes it clear why TPO continues to grow in popularity. The system delivers reliable performance, long-term durability, and impressive energy efficiency thanks to its highly reflective surface. Commercial buildings in Southfield MI appreciate the way TPO roofs help reduce cooling costs during hot months and maintain stable indoor temperatures throughout the year.
Additional benefits include chemical resistance, flexibility during installation, and compatibility with a wide range of insulation types. Whether you operate a retail center, industrial facility, warehouse, or office building, TPO provides a dependable solution designed to protect your property for decades.
Schedule a Single-Ply TPO Evaluation Today
If you’re exploring TPO roofing options or want to know which membrane thickness and reinforcement level are best for your building, Core Values Construction is ready to help. Our team specializes in commercial roofing installation, repair, and maintenance throughout Southfield MI. We provide honest recommendations, detailed inspections, and solutions designed around long-term value.
Contact Core Values Construction today at 517-260-3957 to schedule your commercial roof evaluation and discover whether a professionally installed TPO roofing system is the right choice for your property.
FAQ
What determines the right TPO thickness for my building?
The ideal thickness depends on roof usage, expected foot traffic, and conditions that may increase the risk of punctures or wear. A professional inspection helps identify the best option for long-term performance.
How does reinforced TPO improve overall roof strength?
Reinforcement adds a scrim layer that stabilizes the membrane, increasing its resistance to tearing, stretching, and movement caused by temperature changes.
Why are heat-welded seams considered stronger than traditional adhesives?
Heat-welding fuses the membrane into a single continuous layer, creating seams that can surpass the strength of the membrane itself and offer superior resistance to water and environmental stress.
