Metal Roof Cost Calculator
Enter your roof area and choose a metal type to get an instant cost estimate. The calculator breaks down material cost, labor, old-roof removal and total project cost, with low-to-high price ranges so you can budget confidently. Switch between square feet and square metres at any time.
How to estimate your metal roof cost
Metal roof cost depends on four main variables: roof area, material choice, pitch and whether you need to remove an old roof. Start with the roof area (not the house footprint - the actual sloped surface). Multiply the floor footprint by the pitch factor: 1.03 for a flat-to-low pitch, 1.10 for a typical 4:12, and up to 1.41 for a steep 12:12. Add 10% for waste on a simple gable or up to 25% on a complex hip roof with many valleys. Then choose a metal type - steel is the most affordable, copper is the most durable and expensive - and pick a quote level. Labor typically makes up 60% of the total installed cost, so the quote level reflects both material grade and contractor pricing in your market. Old roof removal adds $1.25-$2.00 per square foot depending on how many layers need to come off.
Metal types compared: steel, aluminum, zinc and copper
Corrugated and ribbed steel panels are the most economical option at $7-$13 per square foot installed. They use exposed fasteners and are popular on agricultural and commercial buildings. Standing seam steel steps up to concealed fasteners and a cleaner appearance, costing $10-$16 per square foot; it is the most popular choice for residential homes. Aluminum costs slightly more ($11-$17/sq ft) and is the best choice for coastal areas where salt air accelerates steel corrosion. Zinc and copper are premium metals costing $14-$41 per square foot installed - both develop a distinctive patina over time and can last over 100 years with virtually no maintenance, making them genuine lifetime roofing systems. Galvanized steel sits between corrugated and standing seam in both price and durability.
What drives the final quote higher or lower
Roof pitch is the largest variable after material choice. A roof steeper than 6:12 adds 25-45% to labor because installers need extra safety equipment, harnesses and in some cases scaffolding. Geographic location matters too: labor rates in major cities can be 20-40% higher than rural markets. Roof complexity - number of valleys, dormers, skylights and chimney flashings - adds time and trim material. Removing two layers of old asphalt shingles costs around $2.00 per square foot and must be done before new metal can go down in most jurisdictions. Panel gauge also affects price: 24-gauge panels cost 25-40% more than 26-gauge but are more resistant to hail damage and oil-canning (the slight waviness visible in thinner panels). Paint system choice - SMP coatings versus PVDF (Kynar) - adds another 20-30% to material costs but greatly improves fade and chalk resistance.
Metal roofing versus asphalt shingles: is it worth it?
Asphalt shingles cost $5-$10 per square foot installed but typically last only 15-25 years, meaning a typical home may replace the roof twice or more in the time a metal roof requires zero replacement. Metal roofs also reflect heat rather than absorbing it, which can reduce cooling loads by 10-25% in warm climates. Metal is virtually immune to moss, algae and rot, and it handles snow and ice far better because the surface allows snow to slide off cleanly. Most metal roofing products carry 30-50 year manufacturer warranties, with premium products offering lifetime coverage. When you factor in the avoided replacement cost and potential energy savings, metal roofing often delivers a lower lifetime cost than asphalt despite the higher upfront price.
Metal roofing cost by material type (2026, installed)
| Material | Low ($/sq ft) | Mid ($/sq ft) | High ($/sq ft) | Lifespan |
|---|---|---|---|---|
| Corrugated Steel | $7 | $9.50 | $12 | 30-45 years |
| Ribbed / R-Panel Steel | $8 | $10.50 | $13 | 35-50 years |
| Galvanized Steel | $9 | $11.50 | $14 | 40-60 years |
| Standing Seam Steel | $10 | $13 | $16 | 40-70 years |
| Aluminum | $11 | $14 | $17 | 40-70 years |
| Zinc | $14 | $17 | $20 | 60-100 years |
| Copper | $29 | $35 | $41 | 70-100+ years |
All-in costs including panels, trim, underlayment and labor. Nationally averaged 2026 data from HomeGuide and This Old House.
Frequently asked questions
How much does a metal roof cost per square foot?
Installed metal roofing costs $7-$41 per square foot depending on material. Corrugated steel is the most affordable at $7-$12/sq ft installed. Standing seam steel runs $10-$16/sq ft, aluminum $11-$17/sq ft, zinc $14-$20/sq ft and copper $29-$41/sq ft. These figures include panels, trim, underlayment and labor. Labor alone accounts for roughly 60% of the installed cost.
How big is a roofing square and how many do I need?
One roofing square equals 100 square feet of roof surface. A 2,000 square foot roof area is 20 squares. When ordering materials, add 10% for a simple gable roof and up to 25% for complex roofs with hips, valleys and dormers. This calculator computes both your adjusted material area and the number of squares automatically.
Does roof pitch affect the cost significantly?
Yes, significantly. A roof with a pitch above 6:12 requires additional safety equipment, staging and more careful installation, which adds 25-45% to the labor portion of the quote. On a typical installation where labor is 60% of the total, a very steep pitch (9:12 or above) can add 25-30% to the all-in cost compared to a flat-to-medium roof of the same area.
Can I install metal roofing over existing shingles?
Sometimes, depending on local building codes and the condition of the existing deck. Installing metal over one layer of asphalt shingles is permitted in many jurisdictions and saves $1.25-$1.50 per square foot in removal costs. However, it traps any moisture under the new roof, can transfer shingle texture through thinner panels, and voids the warranty on some products. Two existing layers nearly always require a full tear-off before metal can be installed.
How long does a metal roof last?
Steel and aluminum metal roofs typically last 40-70 years with normal maintenance. Zinc and copper roofs have documented lifespans exceeding 100 years. By comparison, standard 3-tab asphalt shingles last 15-20 years and architectural shingles 20-30 years. A metal roof installed today may outlast the mortgage and require no replacement during your ownership.
What is standing seam metal roofing?
Standing seam is a metal roofing system where the fasteners are completely hidden inside raised seams that run vertically up the roof. This concealed-fastener design eliminates the exposed screw holes that can leak or fail over time on corrugated and R-panel systems. Standing seam panels also expand and contract freely with temperature changes, reducing oil-canning and stress fractures. It costs more than exposed-fastener systems but delivers a cleaner look and typically a longer service life.
Should I get metal roofing in 24-gauge or 26-gauge?
24-gauge steel is thicker (and counterintuitively, a lower gauge number means thicker metal), heavier and more resistant to hail, denting and oil-canning than 26-gauge. It costs roughly 25-40% more. For residential standing seam roofs, 24-gauge is the industry-preferred specification. 26-gauge is adequate for corrugated and R-panel applications on outbuildings and commercial structures where appearance is less critical.