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BuyMetal Roofing vs Asphalt Shingles
Lifespan, cost, weight, and install complexity — then pick the calculator that matches the material
This is the decision point before either takeoff. Metal uses the panel calculator. Asphalt uses the shingle bundle calculator. Same pitch multiplier; different unit of sale.
Coverage and mill-cut lengths: metal guide. Estimating mistakes: troubleshooting. Roofing hub: hub.
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Real Tradeoffs
- Lifespan: Metal systems are commonly marketed for multi-decade service; asphalt architectural shingles are often in the 20–30 year warranty conversation depending on product and climate.
- Cost: Metal materials and specialty labor usually cost more up front; asphalt wins on first-cost for many residential reroofs.
- Weight: Metal is typically lighter per square than asphalt thick laminates — useful on some structures, irrelevant if the deck or snow load governs.
- Install complexity: Standing seam needs seaming skill and clips; exposed fastener is more familiar but through-fastens the weather surface. Asphalt needs nailing patterns, starter, ridge, and valley method — different truck, different waste model.
Side-by-Side
| Topic | Metal panels | Asphalt shingles |
|---|---|---|
| Sold as | Panels (often mill-cut length) | Bundles / squares |
| Key width number | Net coverage width | Exposure / square coverage |
| Typical waste pad | ~5–15% (complexity) | ~10–15%+ (cut-up higher) |
| Pitch math | Same √(1+(rise/run)²) multiplier | Same multiplier |
| Calculator | Metal panel calculator | Shingle bundle calculator |
Which Calculator to Open
Pick the material first. Then open the matching takeoff. Do not force metal into a bundle worksheet or asphalt into a coverage-width panel count.
Going metal?Coverage width + custom length + waste.
Metal Panel Calculator →Going asphalt?Squares, bundles, and underlayment rolls.
Shingle Bundle Calculator →FAQ
Do both need ice & water shield?
Cold-climate eaves and valleys often do regardless of covering. Run the ice & water calculator.
Does metal remove snow-load concerns?
No — structure still sees roof snow load. Use the snow load calculator.
Any trade
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Metal Panel Install Gear
A coverage-width takeoff is a number until you cut, seam, and fasten the panels. Snips, a hand seamer, and painted hex-washer screws are how standing seam and exposed-fastener roofs leave the truck.
Metal Roofing Screws
Self-tapping hex-washer head screws with sealing washers for exposed-fastener / R-panel installs. Standing seam uses concealed clips instead — still keep stitch screws for trim.
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Offset Aviation Snips
Malco M2006 left-offset snips for flashing, valleys, and the last panel cut. Metal panels are not shingles — you trim sheet, not tear tabs.
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3" Hand Seamer
Malco S2R hand seamer for folding hem edges and detailing standing-seam / trim bends on the roof when a full seaming machine is not on the job.
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TurboShear Attachment
Malco TS1 drill attachment for long straight cuts in sheet. Faster than hand snips when you are trimming a stock-length panel down to a hip cut.
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Comparing to Shingles?
Asphalt is sold by the square and the bundle. Run the shingle takeoff before you pick a material.
Open Shingle Bundle Calculator →
Run the Panel Count
Coverage width, custom panel length, pitch multiplier, and waste — not a shingle-bundle worksheet.
Open Metal Panel Calculator →As an Amazon Associate, TestTalkHQ earns from qualifying purchases.