If you own a commercial property in Florida, your flat roof is your building’s most important asset — and its most vulnerable. Between UV exposure, tropical storms, and standing water, Florida is one of the hardest environments for commercial roofing systems.
At Corvex Roofing, we’ve installed and maintained commercial flat roofs across Brevard County for over 15 years. Here’s what you need to know about the three most popular commercial roofing systems — and which one is right for your building.
TPO (Thermoplastic Polyolefin) — The Florida Standard
TPO has become the dominant commercial roofing membrane in Florida, and for good reason.
Pros:
- Excellent UV and heat resistance (white membrane reflects sunlight, reducing cooling costs 10-30%)
- Meets Florida Building Code and Miami-Dade wind uplift requirements
- Chemical and oil resistant — ideal for restaurants, auto shops, and industrial buildings
- Can be mechanically attached, fully adhered, or installed with RhinoBond induction welding
- Typical lifespan: 20-30 years with proper installation
- Manufacturer warranties available up to 20 years NDL (No Dollar Limit)
Cons:
- Requires skilled installation — bad seam welds are the #1 failure point
- Thinner membranes (45 mil) are cheaper but don’t last in Florida — always go 60 mil minimum
- Limited color options (white is standard, tan/gray available)
Best for: Most Florida commercial buildings — strip malls, warehouses, offices, medical facilities, churches, schools
Cost range: $7-15 per square foot installed (varies by attachment method, insulation, and building access)
EPDM (Ethylene Propylene Diene Monomer) — The Rubber Roof
EPDM is a synthetic rubber membrane that’s been used in commercial roofing for decades.
Pros:
- Proven track record — EPDM has been used since the 1960s
- Excellent flexibility and elongation (handles building movement well)
- Easy to repair — patches adhere well to existing membrane
- Lower material cost than TPO
- Good performance in cooler climates
Cons:
- Black EPDM absorbs heat — terrible for Florida energy efficiency
- White EPDM exists but costs more and doesn’t reflect as well as white TPO
- Seams are glued (adhesive-based) vs heat-welded (TPO) — adhesive seams degrade faster in Florida heat
- Higher long-term maintenance costs
- Less resistance to punctures from foot traffic
Best for: Budget-conscious building owners willing to accept higher energy costs, temporary roofing solutions, buildings with minimal foot traffic
Our recommendation for Florida: Unless you have a very specific reason to use EPDM, TPO is almost always the better choice in our climate. The energy savings alone typically offset the higher material cost within 3-5 years.
Modified Bitumen — The Heavy-Duty Option
Modified bitumen (mod-bit) is an asphalt-based membrane system that’s been a commercial roofing staple for decades.
Pros:
- Extremely durable — handles heavy foot traffic and equipment weight
- Multi-layer system provides redundant waterproofing
- Excellent performance in areas with lots of rooftop equipment (HVAC, generators)
- Self-healing properties — minor punctures can seal themselves in Florida heat
- Can be installed as overlay on existing BUR (built-up roofing) systems
- Typical lifespan: 15-20 years
Cons:
- Heavier than TPO or EPDM — check structural load capacity
- Torch-applied installation creates fire risk (most Florida contractors use peel-and-stick or cold-process now)
- More expensive to remove and replace
- Dark surface absorbs heat unless coated with reflective coating
- Longer installation time
Best for: Buildings with heavy rooftop equipment, high foot traffic areas, overlay applications where tear-off isn’t practical
Head-to-Head Comparison
Feature | TPO | EPDM | Modified Bitumen
Energy efficiency | ★★★★★ | ★★ | ★★★ (with coating)
Wind resistance | ★★★★★ | ★★★ | ★★★★
Durability | ★★★★ | ★★★ | ★★★★★
Cost (installed) | ★★★ | ★★★★ | ★★★
Maintenance | ★★★★ | ★★★ | ★★★
Florida suitability | ★★★★★ | ★★ | ★★★★
Lifespan | 20-30 yr | 15-25 yr | 15-20 yr
What About Metal Roofs for Commercial Buildings?
Standing seam metal roofing is another excellent option for certain commercial applications in Florida. It excels on:
- Buildings with slope (retail, restaurants, churches)
- Properties where aesthetics matter
- Long-term value plays (40-70 year lifespan)
Metal costs more upfront but can last 2-3x longer than membrane systems. Read our full comparison of roofing materials for Florida →
Choosing the Right System for Your Brevard County Building
The right roofing system depends on your specific situation:
Choose TPO if: You want the best balance of performance, energy efficiency, and cost in Florida’s climate (this is what we install most)
Choose Modified Bitumen if: You have heavy rooftop equipment, need a robust system for a high-traffic roof, or want to overlay an existing system
Choose EPDM only if: Budget is your primary constraint and energy costs aren’t a concern
What to Ask Your Commercial Roofing Contractor
Before signing any contract, make sure your contractor can answer:
1. What membrane thickness do you recommend? (60 mil minimum for TPO in Florida)
2. What attachment method? (Mechanically attached, fully adhered, or RhinoBond)
3. What insulation R-value? (Florida Energy Code requires minimum R-25 for new construction)
4. What manufacturer warranty is included? (NDL = No Dollar Limit is the gold standard)
5. Are you a certified installer for the manufacturer? (This matters for warranty validity)
6. What’s your Florida roofing license number? (Verify at myfloridalicense.com)
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Need a commercial roof estimate? Corvex Roofing provides free commercial roof inspections and estimates across Brevard County. Call (321) 676-2201 or request a commercial estimate online. FL License #CCC1337099.
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