As a business owner or property manager, your commercial roof is one of your most important investments. Understanding its lifespan and knowing when it needs maintenance or replacement can save you from unexpected costs and disruptions. In Des Moines, IA, the lifespan of a commercial flat roof depends on the roofing material, climate, and regular maintenance. Let’s break down how long you can expect your EPDM, TPO, or PVC roof to last and when it might be time to replace it.

EPDM Roofing: The Durable Rubber Option

Lifespan: 20-35 years depending on mil thickness and installation specs
EPDM (ethylene propylene diene terpolymer) is a synthetic rubber roofing material known for its durability and resistance to UV rays. It is commonly used in commercial buildings because of its flexibility and long lifespan.

Signs of Wear & When to Replace:
🔹 Shrinkage or pulling away from edges
🔹 Cracks or punctures from foot traffic or debris
🔹 Water pooling that doesn’t drain properly
🔹 Seam separation or flashing issues

Properly maintained EPDM roofs can last decades, but ignoring minor issues can lead to costly repairs or premature replacement.

TPO Roofing: A Cost-Effective, Energy-Efficient Choice

Lifespan: 20-30 years
TPO (thermoplastic polyolefin) is a popular choice for commercial roofs due to its white reflective surface, which helps reduce energy costs. It’s also resistant to chemicals, UV exposure, and punctures.

Signs of Wear & When to Replace:
🔹 Surface cracks or discoloration
🔹 Seam failures due to poor installation or age
🔹 Brittleness or shrinking in older membranes
🔹 Water leaks around flashing or seams

Regular maintenance can help extend the life of a TPO roof, especially in Iowa’s fluctuating weather conditions.

PVC Roofing: A Long-Lasting & Chemical-Resistant Solution

Lifespan: 20-30 years
PVC (polyvinyl chloride) is known for its superior durability, resistance to chemicals, and ability to withstand extreme weather conditions. It is often used in restaurants or buildings where exposure to grease or chemicals is a concern.

Signs of Wear & When to Replace:
🔹 Brittleness or cracking from prolonged UV exposure
🔹 Seam failures leading to leaks
🔹 Surface erosion, especially in older roofs
🔹 Punctures from foot traffic or equipment placement

PVC roofs can last over 25 years with proper maintenance, making them a great long-term investment.

Want Your Roof to Last? Regular Maintenance is Key!

Regardless of the material, a well-maintained roof will always last longer than a neglected one. Preventative maintenance can help catch small issues before they turn into costly repairs.

Signs You Might Need a New Commercial Roof:

✅ Persistent leaks or water pooling
✅ Visible cracks, punctures, or deteriorating seams
✅ Increased energy costs from poor insulation or reflectivity
✅ Mold, mildew, or interior water stains

Schedule Your Free Roof Inspection Before Spring Rains!

Spring is around the corner, and heavy rains can expose hidden roof issues. Right Roofing & Siding offers free commercial roof inspections to help you determine the lifespan of your flat roof and identify any necessary repairs before they become major problems.

📞 Call us or visit fill out the request an appointment form on the website to schedule your free inspection today!