What Is the Difference Between TPO and EPDM Roofing?

Big Bear Roofing • January 24, 2025
A person is welding a piece of foam on a roof.
A roll of roofing material is sitting on top of a wooden roof.

When considering a flat roofing system for your property in St. Louis, MO, you’ll likely encounter two popular options: TPO (Thermoplastic Polyolefin) and EPDM (Ethylene Propylene Diene Monomer). Both materials are widely used for commercial and residential applications, but they have unique characteristics that might make one a better fit for your specific needs.

At Big Bear Roofing, we specialize in providing tailored solutions for our St. Louis clients, ensuring you receive the best roofing materials and installation expertise. Let’s dive into the key differences between TPO and EPDM roofing systems to help you make an informed decision.


What Is TPO Roofing?


TPO roofing is a single-ply membrane made from a blend of polypropylene and ethylene-propylene rubber. Known for its durability and energy efficiency, TPO is an excellent choice for St. Louis property owners looking to reduce energy costs and maintain a modern, sleek appearance.


Benefits of TPO Roofing:

  1. Reflective Surface: TPO’s light-colored surface reflects sunlight, reducing heat absorption and keeping your building cooler.
  2. Durability: Resistant to tears, punctures, and UV degradation, making it a long-lasting option.
  3. Eco-Friendly: TPO is 100% recyclable, supporting environmentally conscious construction.


Considerations:

  • Installation requires skilled professionals to ensure seams are welded correctly.
  • Slightly higher initial cost compared to EPDM.


What Is EPDM Roofing?


EPDM, often referred to as “rubber roofing,” is a black, flexible membrane that has been a staple in flat roofing for decades. Its affordability and proven performance make it a popular choice for budget-conscious property owners in St. Louis.


Benefits of EPDM Roofing:

  1. Cost-Effective: One of the most affordable flat roofing materials available.
  2. Proven Longevity: With proper maintenance, EPDM roofs can last 25-30 years.
  3. Ease of Repair: Small punctures or tears can be easily patched.


Considerations:

  • The dark surface absorbs heat, which can increase cooling costs in warmer months.
  • Less resistant to UV damage compared to TPO unless coated with a reflective layer.



TPO vs. EPDM: Side-by-Side Comparison


Feature TPO Roofing EPDM Roofing
Cost Higher initial cost More budget-friendly
Lifespan 20-30 years 25-30 years
Energy Efficiency Highly reflective, cooler Absorbs heat unless coated
Durability Superior UV resistance Moderate UV resistance
Installation Requires skilled welding Easer, adhesive-based

Which Option Is Right for You?


The decision between TPO and EPDM ultimately depends on your specific needs and priorities:


  • Choose TPO Roofing if you prioritize energy efficiency, modern aesthetics, and durability.
  • Opt for EPDM Roofing if you need a cost-effective solution with a long track record of reliability.


At Big Bear Roofing, we’re here to guide you through every step of your roofing project. Whether you need assistance with material selection, installation, or maintenance, our team has the expertise to ensure a seamless experience.


Why Choose Big Bear Roofing in St. Louis?


  • Expert Installation: Our skilled professionals ensure flawless installation for both TPO and EPDM systems.
  • Tailored Solutions: We assess your property’s unique requirements to recommend the ideal roofing system.
  • Local Knowledge: As a trusted St. Louis roofing company, we understand the specific challenges posed by the region’s climate.


Ready to upgrade your flat roof? Contact Big Bear Roofing today for a free consultation and discover why we’re the top choice for TPO and EPDM roofing in St. Louis, MO.


Call us at (314) 350-7378 or visit https://www.bigbearroofingstl.com/ to schedule your appointment. Let us help you protect your property with the best roofing solutions available!

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While it still feels like winter here in Missouri, Spring is just around the corner – and with it a new challenge for your roof – spring storms. Heavy rain, strong winds, hail, sleet, and even tornadoes can wreak havoc on your home (particularly your roof) during this season. Your roof is your home’s first line of defense against the elements so it is crucial to inspect it after a storm to catch potential damage early. At Big Bear Roofing , we know just how much storms can affect your home’s roof – and we know how important it is to act quickly when dealing with roof damage. After a storm, we will repair your roof quickly and have you back to feeling safe and secure in your home. How Spring Storms Impact Your Roof In Missouri, spring storms can be unpredictable and intense. It’s important to be prepared beforehand, but even preparedness doesn’t always stop unexpected debris and other hazards caused by extreme weather conditions. Common ways spring weather can damage your roof: 1. High Winds Storms often bring strong winds that can lift, loosen, or completely remove shingles. Beyond the direct damage that wind can cause your roof, it can also blow debris (like tree branches) onto your roof, causing punctures or cracks. Over time, missing shingles can expose the underlying structure of your home, leading to leaks and expensive structural damage. The most cost-effective option for Missouri homeowners is to fix these issues before they become major problems for your roof and your wallet. 2. Heavy Rain The consistent, heavy rainfall that often accompanies Missouri’s spring storms can wear down roofing materials (especially if your roof is more than ten years old). Additionally, if your gutters are clogged or damaged, water may pool on your roof, increasing the risk of leaks and water damage inside your home. 3. Hail Damage In the spring, hailstorms are common in Missouri and can cause significant damage. Hailstones dent metal roofing, crack shingles, and dislodge protective granules. Even small hail can weaken the integrity of your roof over time, making it more susceptible to future damage. All types of hail can cause seemingly small problems that lead to large, structural issues if left unrepaired. 4. Fallen Debris All Missouri homeowners know that our spring storms can break tree limbs and send all kinds of debris flying. This is bad news for your roof because all forms of debris can puncture or crack it, leading either to immediate problems or problems down the road. Even when the impact doesn’t seem severe, small holes and cracks can lead to bigger problems when they’re left unaddressed. 7 Signs You Need a Roof Inspection After a Storm As a homeowner, it’s essential to check your roof after a storm to assess the damage. While some issues are obvious (even to untrained eyes), sometimes you need to call in a professional. These are key signs that you need a professional roofing contractor to inspect your roof for damage. 1. Missing or Damaged Shingles Missing and damaged shingles are typically very easy to identify. If you notice shingles on the ground or see bald spots on your roof, high winds may have blown them off. Curled, cracked, or torn shingles can also indicate storm damage. 2. Water Stains on Ceilings or Walls Water stains (or discoloration with an unidentified cause) inside your home could mean a leaky roof. Even when the leak isn’t immediately visible, moisture intrusion can lead to mold growth and structural damage. 3. Granule Loss in Gutters Hail and heavy rain can strip shingles of their protective granules. These granules ensure the longevity of a shingle roof, so losing them can drastically lower the roof’s lifespan. Check your gutters and downspouts for an accumulation of granules—this could be a sign that your roof’s lifespan is decreasing. 4. 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