Choosing between metal vs asphalt shingles is one of the most important decisions Maryland homeowners face when replacing a roof. With humid MD summers and cold winters, roofs must endure moisture, heat, hail, and intense UV exposure. Not only do homeowners want materials that last, but they also need options that deliver energy savings, durability, and long-term value.
In this guide, we’ll walk through key factors like lifespan, cost, maintenance, and performance to help you decide which roofing type suits Maryland’s climate best.
Average Lifespans: Which Roof Lasts Longer?
Asphalt Shingles
Architectural asphalt shingles—preferred over basic three-tab styles—typically last 20 to 30 years under ideal conditions, though in Maryland’s heat and humidity they may need replacement closer to 15–25 years.
Metal Roofing
Metal roofs, especially standing-seam or coated steel panels, can last 40 to 70 years, with some reaching even 80 years, making them a true long-term investment. In humid MD summers, metal’s reflective coatings slow heat absorption and resist moisture degradation.
Durability in Maryland’s Climate
Resisting Heat and UV
- Metal roofing reflects up to 90% of solar radiation (especially “cool roof” coatings), reducing attic temperatures and air conditioning costs.
- Asphalt shingles, even “cool” varieties from manufacturers, reflect only 5–25%, causing more heat absorption.
Handling Moisture and Mold
- Humid conditions in MD accelerate algae and mold on asphalt shingles, especially near shady areas.
- Metal is non-porous, resistant to mold, and won’t trap moisture—an advantage in wet environments.
Storm Resistance & Structural Performance
Wind and Impact
Metal roofing can resist sustained winds over 100 mph and offers strong impact resistance. Asphalt shingles, even Class 4 options, typically handle moderate hail and wind but suffer more granule loss.
Snow and Ice Management
Metal’s smooth surface sheds snow more easily—reducing ice dam risks in winter. In contrast, asphalt may trap melting snow, leading to water intrusion.
Cost & Value Comparison
Upfront vs Lifecycle Investment
- Asphalt shingles: $3–$5 per sq ft installed; expect replacement every 20–30 years.
- Metal roofing: $7–$16 per sq ft installed; one installation could last 50+ years.
Although metal roofs cost 2–3× more upfront, the need for only one installation versus multiple asphalt replacements often makes metal more cost-effective long-term.
Energy Savings and ROI
Metal roofing reflects solar heat, reducing cooling costs by up to 40% in summer. Asphalt “cool shingles” offer some relief but don’t match metal’s efficiency. Additionally, metal roofs often return 60–70% value at resale—comparable or better than asphalt.
Installation & Maintenance Considerations
Easier Installation with Asphalt
Asphalt is straightforward to install, often DIY-capable, and repairs are quick and inexpensive. Metal roofing requires professional crews and precision installation .
Ongoing Maintenance
Asphalt roofs need occasional spot repairs and cleaning. Metal roofs are low-maintenance but may require occasional touch-ups for scratches or fastener checks .
Noise Factor
Contrary to myth, properly installed metal roofs—with insulation and underlayment—are only marginally louder than asphalt during rain, typically adding 1–2 dB.
Environmental Impact
- Metal: Often made from recycled content, fully recyclable, and reduces landfill waste .
- Asphalt: Petroleum-based; many end up in landfills, though recycled asphalt is used in road construction .
Selecting the Right Roof for Humid MD Summers
Here’s how each material performs during Maryland’s humid season:
- Metal Roofing
- Reflective coatings keep homes cooler.
- Prevents mold and moisture buildup.
- Handles summer storms and heat well.
- Reflective coatings keep homes cooler.
- Asphalt Shingles
- Less reflective, so absorb more heat.
- Vulnerable to mold, algae, and heat degradation.
- Easier repairs but shorter lifespan.
- Less reflective, so absorb more heat.
What Should Maryland Homeowners Choose?
If you plan to stay in your home more than 20 years, metal roofing is the clear winner in longevity, energy efficiency, and environmental benefits. For shorter-term homeowners, asphalt remains a solid, economical choice with simpler installation and quieter use.
Ready to Compare for Your Home?
Protecting your home in Maryland’s climate requires expertise and the right materials. At Home Source Roofing, we specialize in helping homeowners weigh metal vs asphalt shingles based on budget, aesthetics, and weather resilience. We provide no-pressure advice, fair estimates, and expert installation.
Curious which option best suits your roof? Get a free inspection now and let us guide you toward lasting protection and comfort.
