Choosing the right roofing material is one of the most important decisions for a commercial property owner. When it comes to flat or low-slope roofs, TPO (Thermoplastic Olefin) and EPDM (Ethylene Propylene Diene Monomer) are two of the most popular and trusted options in the industry. But how do you decide between the two?
At Boundless Roofing & Chimney, we specialize in commercial roofing systems across New Jersey and have installed both TPO and EPDM on office buildings, warehouses, retail spaces, and more. In this post, we’ll break down the key differences, benefits, drawbacks, and cost considerations of each system to help you make the best decision for your building.
What Is TPO Roofing?
TPO (Thermoplastic Olefin) is a single-ply membrane made from a blend of rubber and thermoplastics. It’s typically white or light-colored, making it highly reflective and energy-efficient.
🔍 Key Benefits of TPO:
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Energy Efficiency: The light-colored surface reflects UV rays, reducing heat absorption and cooling costs.
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Durability: TPO resists tears, punctures, and mold.
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Eco-Friendly: Many TPO products are 100% recyclable.
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Cost-Effective Installation: Lightweight and easy to install with heat-welded seams.
⚠️ Drawbacks of TPO:
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Newer Technology: Not as time-tested as EPDM.
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Inconsistent Quality: Manufacturing standards vary by brand.
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Heat-Welded Seams: Require skilled installers and specific equipment.
What Is EPDM Roofing?
EPDM (Ethylene Propylene Diene Monomer) is a synthetic rubber membrane known for its flexibility, durability, and proven track record. It is usually black, though white versions are also available.
🔍 Key Benefits of EPDM:
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Long Track Record: Over 60 years of proven performance in commercial applications.
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Weather Resistance: Performs exceptionally well in all climates.
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Ease of Repair: Simple patching system and long-term serviceability.
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Lower Initial Cost: Typically cheaper than TPO.
⚠️ Drawbacks of EPDM:
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Heat Absorption: The black membrane absorbs heat, which can increase cooling costs.
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Aesthetic Limitations: Less modern appearance than white TPO systems.
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Adhesive Seams: May be less durable than TPO’s heat-welded seams over time.
TPO vs. EPDM: Side-by-Side Comparison
| Feature | TPO | EPDM |
|---|---|---|
| Color | White/light-colored | Black (or white alternative) |
| Energy Efficiency | High (UV reflective) | Lower (black absorbs heat) |
| Installation | Heat-welded seams (faster) | Adhesive seams (simpler tools) |
| Durability | Good resistance to damage | Excellent flexibility |
| Lifespan | 15–20 years | 20–30 years |
| Cost | Slightly higher | Generally lower |
| Climate Suitability | Best in hot climates | Performs well in cold climates |
| Eco-Friendliness | Recyclable material | Some recycling options available |
Which Is Better for Your Building?
The right roofing choice depends on your building’s usage, budget, energy goals, and climate conditions.
Choose TPO if:
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You want to reduce energy bills with a reflective white surface
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Your building is in a hot, sunny area of New Jersey
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You’re planning a green or energy-efficient upgrade
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You prefer heat-welded seams for water-tight integrity
Choose EPDM if:
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You need a proven, long-lasting solution
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Your building is in a cold climate or shaded area
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Budget is a primary concern
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You want simple repairs and long-term reliability
Installation Matters: Why Partner with a Professional
Both TPO and EPDM require expert installation to maximize their lifespan and performance. Improper seams, drainage issues, or substrate problems can compromise even the best roofing systems.
That’s why commercial property owners across New Jersey trust Boundless Roofing & Chimney. Our licensed roofing specialists provide:
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Detailed roof assessments
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Transparent material comparisons
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Precision installation with manufacturer-certified crews
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Full-service maintenance and warranty support
Still Not Sure? We’ll Help You Decide
Choosing between TPO and EPDM doesn’t have to be overwhelming. At Boundless Roofing & Chimney, we’re here to help you evaluate the best option for your property and budget.
📞 Call us today at 973-960-7921 for a free consultation
💬 Or request your free estimate online