When selecting a commercial roofing system, two popular options stand out: EPDM (Ethylene Propylene Diene Monomer) and TPO (Thermoplastic Polyolefin). Understanding the differences between these materials can help you make an informed decision for your building. Let's compare these roofing systems across key factors.
What Is EPDM Roofing?
EPDM roofing, often called "rubber roofing," is a durable, synthetic rubber roofing membrane. This black, flexible material resembles a rubber inner tube and has been used in commercial applications for decades.
EPDM roofing installation involves large sheets sealed at the seams with a specialized adhesive. This system works well on both flat and low-slope roofs, providing reliable protection against the elements.
What Is TPO Roofing?
TPO roofing is a newer single-membrane roofing system made from thermoplastic polyolefin. This TPO roof material comes in large rolls and is typically white in color. During installation, the sheets are mechanically fastened to the roof substrate, and the seams are fused using heat rather than adhesives.
Comparing EPDM vs. TPO Roofing
Durability and Lifespan
EPDM roofing offers excellent durability with a lifespan of 20 to 30 years. It resists damage from UV radiation, ozone, and weathering. The material remains flexible even in extreme temperatures, reducing the risk of cracks.
In comparison, TPO roofing typically lasts 15 to 20 years. While manufacturers continue to improve TPO formulations, some older versions have issues with seam failures and premature aging. Modern TPO products offer better durability but still may not match EPDM's longevity.
Energy Efficiency
EPDM's black surface absorbs heat, which can increase cooling costs during the summer months. However, in colder climates, this heat absorption can be beneficial during winter.
TPO's white surface reflects solar radiation effectively, potentially reducing cooling demands and energy costs in warm weather. This reflective property makes TPO an energy-efficient option in hot climates.
Cost Considerations
EPDM typically costs less initially than TPO. The material itself is less expensive, and installation can be less complex, requiring fewer specialized tools.
TPO has a higher upfront cost but may offer long-term savings through energy efficiency. The heat-welded seams of TPO also tend to be stronger than EPDM's adhesive seams.
Weather Resistance
EPDM performs well in various weather conditions and resists damage from hail and storms. Its flexibility makes it less prone to punctures from impacts.
TPO offers good resistance to tears, impacts, and punctures. It also performs well in high winds when properly installed.
Which System Is Right for Your Building?
The best choice depends on your specific needs:
- Choose EPDM if you're looking for a cost-effective, proven system with excellent durability in a variety of climates.
- Choose TPO if energy efficiency is a priority, especially in hot climates, and you prefer heat-welded seams.
Get Expert Roofing Advice Today
At Superior Roofing, we have expertise with all types of commercial roofing systems, including EPDM and TPO. We offer free inspections and will work with you and your insurance provider to ensure your commercial roof stays in the best possible condition at the least expense. Contact us today to schedule a free inspection and let our roofing experts help you determine the best solution for your building.