The question comes up on almost every estimate call when someone is doing a full replacement rather than an insurance claim: should I just go metal? It is a legitimate question, and the honest answer is not the same for every homeowner or every house.
We install both. Here is a straight comparison that doesn't favor one over the other — just what the tradeoffs actually look like for a house in Western PA.
What Western PA Weather Actually Demands From a Roof
Before comparing materials, it helps to understand what the local environment actually asks of a roof. The Western PA climate — the area from Mercer and Lawrence counties south through Allegheny and east into Westmoreland — runs roughly 120 to 140 freeze-thaw cycles per year. That means 120 to 140 times that water in your roofing system freezes, expands, and thaws. Every time, that expansion creates mechanical stress on every joint, seal, fastener, and surface layer.
We average 35 to 45 inches of rainfall annually, plus a significant snowfall component — Erie County at the north end of our service area can see 80 to 100 inches of snow per year. The thermal range between a deep January cold snap and a July heat wave runs 90°F to 100°F across the year. This is a demanding climate for any roofing material.
Asphalt Shingles: The Honest Assessment
Asphalt shingles are the dominant roofing material in Western PA for a reason. They work well in this climate when properly installed with the right underlayment, Ice and Water Shield at the eaves, proper ventilation, and correct fastening patterns. The dominant failure modes — granule loss, cracking, and curling — are accelerated by poor ventilation and improper installation more than by the material itself.
Cost: In the current Western PA market, a quality architectural shingle installation runs $8,000 to $14,000 on a typical 2,000 square foot home. Premium impact-resistant shingles — which carry better insurance discounts and hail resistance ratings — run $11,000 to $18,000 on the same house. We use IKO as our primary shingle brand, as a certified IKO RoofPro contractor, because their warranty is backed and their regional distribution is strong in Pennsylvania.
Lifespan: Honestly — not the 30 years printed on the package under Western PA conditions without attention. 20 to 25 years is a more realistic expectation on a properly installed architectural shingle roof in Mercer or Lawrence County. Impact-resistant Class 4 shingles trend toward the higher end of this range. Budget 3-tab shingles on a poorly ventilated house might give you 15 to 18 years.
For insurance claims: Standard asphalt shingles are covered by virtually every homeowner's policy and are straightforward to replace on a claim. Some Class 4 impact-resistant shingles qualify for insurance premium discounts — ask your carrier. Metal roofs can complicate insurance claims in some cases.
Metal Roofing: Where It Makes Sense
Metal roofing in Western PA most commonly comes in two forms: standing seam (concealed fastener panels with raised seams) and exposed-fastener corrugated or ribbed panels. Standing seam is the higher-quality option; exposed-fastener panels are less expensive but require more maintenance over time.
Cost: Standing seam metal runs $22,000 to $42,000 installed on the same 2,000 square foot home, depending on profile, Galvalume or steel gauge, and roof complexity. Exposed-fastener corrugated panels run $12,000 to $20,000. These are real numbers as of the current market in Western PA — not estimates built from national averages.
Lifespan: A quality standing seam metal roof installed properly should last 40 to 70 years under Western PA conditions. The metal itself is not the failure point — the flashings, sealants, and trim pieces around penetrations are. These require periodic inspection and maintenance at 15 to 20 year intervals to achieve the full lifespan potential.
Freeze-thaw performance: Standing seam metal handles freeze-thaw well because the concealed fastener system allows the panels to expand and contract without leaking. Exposed-fastener systems are the opposite — each fastener point is a potential leak source as the metal moves seasonally. Over 20 years, this is not hypothetical.
Snow shedding: Metal roofs shed snow more readily than asphalt, which reduces structural load accumulation during heavy snow events. This is a genuine advantage in Erie County and the heavier snow areas of Crawford and Venango counties. In the Mercer-Lawrence corridor with moderate snow accumulation, it matters less.
Side-by-Side Comparison
| Factor | Asphalt Shingles | Standing Seam Metal |
|---|---|---|
| Installed Cost | $8,000–$14,000 | $22,000–$42,000 |
| Expected Lifespan (WPA) | 20–25 years | 40–70 years |
| Freeze-Thaw Resistance | Good (proper install) | Excellent |
| Snow Shedding | Moderate | Excellent |
| Insurance Claim Ease | Straightforward | Variable by carrier |
| Maintenance | Low (with inspection) | Very low (with seals) |
| Resale Value (WPA) | Standard | Modest premium |
| Hail Resistance | Class 4 available | High (Class 4) |
| Noise During Rain | Quiet | Louder (attic-dependent) |
When Metal Makes Financial Sense
The math on metal only works if you intend to be in the house long enough to recover the premium cost through longevity — or if you have specific conditions that make it the stronger technical choice. We recommend considering metal when: you're on your second or third shingle replacement and want to be done with it; you have a property in a heavy snow area like Erie or Crawford County where shedding performance is meaningful; your attic insulation and ventilation will be upgraded simultaneously (addressing the ice dam risk on any system); or you have a particularly complex roof geometry where fewer seams reduce long-term leak potential.
We do not recommend metal as a lifestyle upgrade on a house you plan to sell in 5 to 7 years. You will not recover the cost difference at sale in most Western PA submarkets.
Related reading: Asphalt Shingle Replacement | Metal Roof Replacement & Repair | Sharon PA Roof Replacement | Pittsburgh PA Roof Replacement