Every year, thousands of Philadelphia-area homeowners face this decision: replace their worn asphalt shingles with more asphalt shingles, or upgrade to metal roofing? Both are excellent options — but they're not the same investment, and the right choice depends on your home, your budget, and how long you plan to stay.
As a licensed roofing contractor working across PA, NJ, and DE, with crews carrying 25 years of hands-on experience in both systems, I've seen each material perform in our local climate. Here's the honest breakdown.
The Quick Comparison
| Factor | Asphalt Shingles | Metal Roofing |
|---|---|---|
| Upfront Cost (2,000 sq ft home) | $8,000–$14,000 | $18,000–$35,000 |
| Expected Lifespan | 20–30 years | 40–70+ years |
| Maintenance | Moderate (5–10yr inspections) | Very low |
| Energy Efficiency | Standard | Reflects heat — saves 10–25% |
| Weight | Heavier (2–4 lbs/sq ft) | Light (1–1.5 lbs/sq ft) |
| Noise in Rain | Quiet | Slightly louder (mitigated with underlayment) |
| Resale Value Boost | 4–6% | 6–10% |
| Insurance Discounts | Some (impact-resistant) | Yes — Class 4 rated metals |
| Best For | Budget-conscious, standard homes | Long-term, high-income, premium homes |
Cost: Upfront vs Lifetime
Asphalt shingles win the upfront cost comparison — typically $8,000–$14,000 for a 2,000 sq ft Philadelphia home depending on pitch, complexity, and material grade. GAF Timberline HDZ, our most popular shingle, sits at the upper end of that range and delivers exceptional value.
Metal roofing runs $18,000–$35,000 for the same home. Standing seam is at the top of that range; exposed-fastener metal panels or metal shingles are lower. But here's the math that changes everything: if your asphalt shingles last 25 years and metal lasts 60 years, you'll replace asphalt shingles 2.4 times in the same period you own one metal roof. Account for future installation costs and metal often wins on total lifetime cost.
Performance in Philadelphia's Climate
Philadelphia sits in USDA Hardiness Zone 7a — hot, humid summers and cold winters with significant freeze-thaw cycling. Both materials perform well here, but differently:
- Asphalt shingles are vulnerable to granule loss in high UV summers and cracking during freeze-thaw cycles. After 15–20 years in our climate, most asphalt roofs start showing wear even if they haven't fully failed.
- Metal roofing handles freeze-thaw exceptionally well. Metal expands and contracts without cracking, sheds snow and ice cleanly, and doesn't develop moss or algae — a common problem on north-facing Philadelphia rowhouses.
- Hail resistance is worth noting — many metal roof products carry a Class 4 impact rating (the highest), which can lower your homeowner's insurance premium by 10–30%.
Which Is Right for Philadelphia Rowhouses?
Philadelphia's iconic rowhouses present a specific situation: many have a flat or low-slope rear section (kitchen/bathroom addition) plus a pitched front roof. The standard recommendation:
- Flat/rear section: TPO or EPDM membrane — not metal, not shingles. Metal at low slopes requires concealed fastener systems that add cost.
- Pitched front roof: Either material works. Metal shingles (designed to mimic slate or wood shake) look excellent on Fishtown, South Philly, and Germantown rowhouses.
- Party wall flashings: Both materials require careful attention to shared wall flashings — we use lead and copper on high-end installs for lasting watertight seals.
My Recommendation
Choose asphalt shingles if:
- Your budget is under $15,000
- You plan to sell within 10 years
- Your current structural framing is marginal (older homes)
- You want a proven, fast installation (1–2 days)
Choose metal roofing if:
- You're staying in the home 15+ years
- You want maximum energy savings and insurance discounts
- Your home has curb appeal aspirations (standing seam, metal shingles)
- You want the lowest maintenance over time
