There isn’t a single “correct” price for a TPO roof.
Every commercial building is different, and factors like roof size, membrane thickness, installation method, and existing conditions all influence the final number.
In our experience working on commercial properties throughout Pennsylvania and New Jersey, most complete TPO roofing systems start around $7 per square foot on the low end and increase based on the level of protection and performance you’re looking for.
Entry-level systems typically start in that lower range and use thinner membranes with mechanically fastened installation methods.
These can make sense for buildings with minimal roof traffic and tighter budgets.
Most commercial property owners, however, land in the middle range, where pricing usually starts closer to $9 per square foot.
These systems commonly use a 60-mil membrane, proper insulation, and installation methods designed for long-term performance.
For buildings that see regular roof traffic, have greater wind exposure, or where longevity is a top priority, premium systems start around $12 per square foot and up.
These installations often include thicker 80-mil membranes, fully adhered systems, upgraded insulation packages, and extended warranties.
It’s important to understand that these prices reflect complete roofing systems—not just the membrane itself.
A properly quoted TPO project includes removal of the existing roof (typically one layer), insulation, flashing at all penetrations and edges, heat-welded seams, professional installation, cleanup, and manufacturer-backed warranties.
When prices seem unusually low, it’s often because something essential has been left out.
One of the biggest pricing variables is membrane thickness.
While the difference between 45-mil, 60-mil, and 80-mil membranes may seem minor on paper, it has a noticeable impact on durability and lifespan.
Thicker membranes provide better puncture resistance, hold up better to foot traffic, and generally last longer.
For most commercial buildings, 60-mil TPO offers the best balance between cost and performance, which is why it’s the most common choice we install.
Installation quality plays just as big a role as materials.
TPO roofing relies on properly welded seams and carefully detailed flashing.
Rushed work or inexperienced crews can lead to premature leaks and warranty issues, even when good materials are used.
That’s why pricing isn’t just about square footage—it reflects the skill and experience of the contractor doing the work.
Other factors can also push costs higher, including multiple layers of existing roofing, hidden deck damage discovered during tear-off, complex roof layouts with numerous penetrations, or difficult access that requires specialized equipment.
Seasonal timing can matter as well, especially during winter months when conditions are more challenging.
So what should you expect to pay for a commercial TPO roof in Pennsylvania or New Jersey?
For most standard projects, pricing typically starts around $9 per square foot, with adjustments based on your building’s specific needs.
The goal isn’t to find the cheapest number—it’s to install a system that performs reliably for decades with minimal issues.
The best way to get accurate pricing is with an on-site evaluation.
Every roof tells a different story once it’s inspected, and a detailed assessment allows for clear, honest pricing without surprises later on.