Choosing the right commercial roofing system impacts your building’s performance, energy costs, and long-term asset value. Two of the most common single-ply membranes for low-slope roofs are TPO (Thermoplastic Polyolefin) and PVC (Polyvinyl Chloride).
At Nations Roof, we install and service both, and we’re certified by all major manufacturers. That means whichever system you choose, your roof remains warranty-compliant and built to last.
TPO is the most widely used membrane for low-slope commercial roofs.
How it’s built:
Single-ply sheets reinforced with polyester mats
Heat-welded seams for strong, watertight bonds
Available in white, gray, and tan, in multiple thicknesses (45–80 mil)
Key advantages:
UV and heat resistance helps reduce cooling costs
Flexible in colder climates → less cracking
Mold- and chemical-resistant
Available with warranties of up to 30 years
PVC membranes have been trusted in commercial roofing for more than 60 years.
How it’s built:
Two PVC layers with a polyester reinforcement scrim
Heat-welded seams; optional rib for a standing-seam look
Plasticizers in the bottom layer improve flexibility during installation
Key advantages:
Superior chemical resistance — ideal for restaurants, airports, and industrial sites
Strong fire resistance with Factory Mutual/UL-approved assemblies
10–30 year warranty options
100% recyclable membrane
Choosing between TPO and PVC often comes down to performance in your specific environment. Use this side-by-side comparison to weigh their strengths in areas like chemical resistance, lifespan, and energy efficiency.
Selecting the right system depends on more than price:
Current roof condition: Can it be reroofed or must it be replaced?
Building use: Chemical exposure, HVAC loads, or foot traffic may drive the choice.
Location & climate: Energy efficiency needs differ by region.
Future plans: If long-term durability is critical, warranty terms may weigh heavily.
This in-depth resource includes a printable side-by-side matrix, cost considerations, and maintenance insights to help you make the right decision for your portfolio.
Every building is unique. That’s why Nations Roof partners with property owners, facility managers, and procurement teams to recommend and install the right system for your needs.
You might also like this video:
TPO vs EPDM vs Modified Bitumen Explained in Under 3 Minutes