The answer to which is better between commercial asphalt roofing and EPDM is:
Commercial asphalt roofing is better for impact resistance and heavy traffic durability, while EPDM is better for UV resistance and long-term flexibility. The best choice depends on building type, climate, and maintenance expectations in Maryland commercial properties.
Choosing the right roofing system directly impacts durability, cost, and long-term building protection. Commercial property owners often compare asphalt roofing and EPDM systems to find the best solution.
This guide breaks down both systems in simple terms to help you make a confident decision.
FEATURED SNIPPET SUMMARY
Commercial asphalt roofing vs EPDM depends on performance needs. Asphalt roofs offer layered strength and durability, while EPDM provides flexible rubber membrane protection with long lifespan. Maryland businesses choose based on budget, weather exposure, and maintenance requirements.
WHAT IS COMMERCIAL ASPHALT ROOFING?
Commercial asphalt roofing is a multi-layer roofing system designed for flat and low-slope buildings. It uses asphalt, fiberglass, and reinforced materials to create a waterproof barrier.
Common Types Include:
Built-Up Roofing (BUR), Modified Bitumen Roofing, Asphalt Roll Roofing
Key Features:
Strong waterproof protection, Multi-layer durability
High resistance to foot traffic, Suitable for commercial buildings
WHAT IS EPDM ROOFING?
EPDM (Ethylene Propylene Diene Monomer) is a synthetic rubber roofing membrane used on flat commercial roofs. It is widely used in commercial buildings because of its durability, flexibility, and long lifespan compared to many traditional roofing materials.
Key Features:
- Single-layer rubber membrane
- UV and heat resistance
- Flexible under temperature changes
- Long service life
COMMERCIAL ASPHALT ROOFING VS EPDM (DETAILED COMPARISON)
MATERIAL STRUCTURE
Feature | Asphalt Roofing | EPDM Roofing |
Layers | Multi-layer | Single layer |
Material | Asphalt + fiberglass | Synthetic rubber |
Seams | Multiple | Minimal |
DURABILITY PERFORMANCE
Asphalt roofing performs better under heavy impact and high foot traffic, making it suitable for roofs that require frequent maintenance access.
EPDM roofing performs better under UV exposure and thermal expansion cycles, making it highly effective in open, sun-exposed flat roofs.
LIFESPAN COMPARISON
Asphalt Roofing Lifespan:
- Built-Up Roofing: 20–30 years
- Modified Bitumen: 20–30 years
- Roll Roofing: 10–20 years
EPDM Lifespan:
- 25–40 years with proper maintenance
EPDM generally lasts longer due to its resistance to UV rays and temperature changes, while asphalt systems may require more frequent repairs depending on weather exposure.
WEATHER PERFORMANCE IN MARYLAND
Maryland experiences rain, snow, heat, humidity, and seasonal storms, which directly affect roofing performance.
Asphalt Roofing:
- Strong resistance against wind and physical impact
- Can degrade faster under prolonged UV exposure
- Performs well in cold and snowy conditions when properly installed
EPDM Roofing:
- Excellent UV resistance for hot summers
- Highly flexible during freezing and thawing cycles
- May require periodic seam inspections to prevent leaks
HOW LONG DOES AN ASPHALT ROOF LAST?
Commercial asphalt roofs typically last between 20 and 30 years, depending on material quality, installation, and maintenance practices.
Factors Affecting Lifespan:
- Installation quality
- Drainage system performance
- Weather exposure (rain, snow, UV)
- Maintenance frequency
- Roof usage and foot traffic
Proper maintenance such as inspections and timely repairs can significantly extend the lifespan of an asphalt roof.
HOW TO CLEAN AN ASPHALT ROOF
Regular cleaning helps prevent debris buildup, water pooling, and early roof deterioration.
Step-by-Step Process:
- Remove debris like leaves, branches, and dirt
- Clear gutters and drainage systems to prevent water backup
- Use low-pressure washing only when necessary
- Avoid harsh chemical cleaners that can damage asphalt layers
- Schedule at least one professional inspection per year
High-pressure washing should always be avoided because it can strip protective layers and weaken the roofing system.
CAN YOU PAINT ASPHALT ROOF SHINGLES?
Yes, asphalt shingles can technically be painted, but it is generally not recommended for commercial roofing systems.
Risks Include:
- Moisture trapping beneath the paint layer
- Reduced ventilation
- Shortened roof lifespan
- Potential warranty voiding
In most cases, protective coatings or full replacement systems are better long-term solutions than painting.
HOW TO INSTALL ASPHALT ROLL ROOFING
Proper installation is critical to avoid leaks and premature roof failure.
Installation Steps:
- Clean and prepare the roof surface thoroughly
- Install a suitable underlayment for added protection
- Lay asphalt roll roofing sheets evenly across the surface
- Secure sheets using adhesives or fasteners
- Seal all seams carefully to prevent water infiltration
- Conduct a final inspection to ensure proper sealing
Professional installation is strongly recommended for commercial buildings due to complexity and long-term performance requirements.
HOW TO REPLACE AN ASPHALT ROOF
Roof replacement becomes necessary when damage is extensive or repair costs become too frequent and expensive.
Signs You Need Replacement:
- Frequent or recurring leaks
- Blistering, cracking, or surface damage
- Persistent ponding water on flat areas
- High repair costs over time
Replacement Process:
- Full roof inspection and damage assessment
- Removal of old roofing materials
- Repair or replacement of damaged roof deck
- Installation of new roofing system
- Final quality inspection and waterproof testing
A proper replacement ensures long-term durability and restores full roof protection capacity.
COST OF COMMERCIAL ASPHALT ROOFING VS EPDM
COST COMPARISON TABLE
Roofing Type | Cost per sq ft | Lifespan | Maintenance |
Asphalt Roofing | $4 – $8 | 20–30 years | Moderate |
EPDM Roofing | $5 – $10 | 25–40 years | Low |
Cost Insight:
EPDM costs more upfront but offers lower maintenance long-term.
KEY TAKEAWAYS
1.Asphalt roofing is best for durability and impact resistance
2. EPDM is best for UV protection and flexibility
3. Both systems are suitable for commercial buildings in Maryland
4. Lifespan depends heavily on maintenance quality
5. Proper installation is critical for long-term performance
WHY CHOOSE BRIGHT VIEW EXTERIORS
Bright View Exteriors is a licensed roofing and storm restoration contractor headquartered in Beltsville, Maryland. We serve homeowners and commercial property owners across Maryland, Virginia, and Pennsylvania.
What sets our team apart:
- 4.9-star Google rating from 130-plus verified local reviews.
- 45+ years of combined team experience in residential and commercial roofing.
- Free, no-pressure storm inspections are scheduled fast across our service area.
- In-house insurance claim assistance, we meet your adjuster and document the damage.
- Transparent, upfront pricing with financing options when needed.
- Manufacturer-certified installations with extended workmanship warranties.
CONCLUSION
Commercial asphalt roofing and EPDM are both strong roofing systems with different advantages. Asphalt excels in durability and impact resistance, while EPDM performs better in UV exposure and long-term flexibility.
Choosing the right system depends on your building’s needs, budget, and environmental conditions. A professional inspection is the best way to determine the ideal solution for long-term protection and cost savings.
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Contact us today to schedule your inspection or get a free quote.
FREQUENTLY ASKED QUESTIONS (FAQ)
What is commercial asphalt roofing?
Commercial asphalt roofing is a layered roofing system using asphalt and fiberglass materials for waterproof protection on flat and low-slope buildings.
Which is better, asphalt roofing or EPDM?
Asphalt is better for impact resistance, while EPDM is better for UV durability and flexibility.
How long does an asphalt roof last?
It typically lasts 20–30 years depending on maintenance and material type.
Is EPDM roofing more expensive?
Yes, EPDM has a higher upfront cost but lower maintenance expenses over time.
Can asphalt roofs handle heavy rain?
Yes, they perform well in rain when properly installed with good drainage systems.