TPO vs EPDM Roofing: Differences, Lifespan & Best Uses

Choosing the right roofing system impacts your building’s energy efficiency, durability, and long-term costs. Two of the most popular single-ply membranes for low-slope commercial roofs are TPO (Thermoplastic Polyolefin) and EPDM (Ethylene Propylene Diene Monomer).

At Nations Roof®, our certified crews install and service both systems — ensuring warranty compliance and long-term performance. Here’s how they compare.

What Is TPO Roofing?

TPO is a single-ply membrane made from a heat-weldable blend of polypropylene and ethylene-propylene rubber.

How it’s built:

• Reinforced with polyester mats

• Installed mechanically attached or fully adhered

• Heat-welded seams create strong, watertight bonds

• Available in white, gray, and tan; thicknesses of 45, 60, or 80 mil

Key benefits of TPO roofing:

• Reflects up to 87% of UV rays → lowers cooling costs in hot climates

• May contribute toward LEED credits; most are Energy Star–rated

• Flexible in colder climates, reducing cracking risk

• Resistant to chemicals, mold, tears, and punctures

• Lifespan: 20–30 years with proper maintenance

What Is EPDM Roofing?

EPDM is a synthetic rubber membrane first introduced in the 1960s. It expands and contracts with temperature changes, making it highly versatile.

How it’s built:

• Made from ethylene, propylene, and carbon black (derived from oil and natural gas)

• Available in black or white sheets up to 50′ x 200′

• Thicknesses of 45, 60, or 90 mil

• Installed fully adhered, mechanically attached, or ballasted

• Seams sealed with tape or liquid adhesives

Key benefits of EPDM roofing:

• Extremely durable and weather-resistant, even in harsh climates

• Naturally UV-resistant → extends membrane life

• Black EPDM can reduce heating costs in cold climates

• Compatible with silicone and acrylic coatings to extend lifespan and improve energy efficiency

• Lifespan: 30+ years with proper maintenance

TPO vs EPDM: Side-by-Side Comparison

TPO and EPDM are two of the most popular single-ply membranes. Here’s how they compare in lifespan, energy efficiency, and maintenance requirements to help you decide which fits your project.

Key Takeaways

• Both TPO and EPDM are trusted single-ply commercial roofing systems.

• TPO is best for properties prioritizing UV reflection and cooling savings.

• EPDM is best for facilities needing long lifespan, flexibility, and cold-weather performance.

• The right choice depends on climate, building use, and long-term ROI goals. heavily.

How to Decide for Your Building

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.

That’s where Nations Roof makes the difference:

Download Your Comparison Guide

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.

Schedule a Consultation

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.

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