# How to Estimate a Metal Roof: Panels, Trim, and Labor

Canonical URL: https://www.simplywise.com/blog/how-to-estimate-a-metal-roof/
Plain text: https://www.simplywise.com/blog/how-to-estimate-a-metal-roof/llms.txt
Publisher: SimplyWise, Inc. (https://www.simplywise.com)
Published: October 19, 2026
Updated: October 19, 2026
Category: How to Estimate
Summary: A metal roof estimate, standing seam or exposed fastener: measure each plane, count panels from coverage width, price trim and waste, then add labor.

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## How to Estimate a Metal Roof: Panels, Trim, and Labor

Measure each plane, count panels from the coverage width, add trim and waste, then price labor. That is the whole metal roof estimate, for standing seam and exposed fastener panels.

A metal roof estimate, at a glance

1. Standing seam panels cover 12, 16, or 18 inches each. Exposed fastener panels commonly cover 24, 32, or 36 inches (McElroy Metal, Union Corrugating).
2. Panel count comes from roof width divided by coverage width, run separately for every roof plane, not one number for the whole roof.
3. Trim and flashing get their own line items: ridge cap, eave, rake, valley, and wall flashing are priced by the linear foot, not folded into the panel count.
4. Roofers earn a $27.95 mean hourly wage, $58,140 mean annual, before markup (BLS OEWS, May 2025).
5. Waste rides on cut losses at hips, valleys, and penetrations, not on the base panel count; a simple gable needs less than a hip roof with dormers.
6. Itemize panels, trim, underlayment, fasteners, and labor separately, never off one blended per-square number.

## How do you estimate a metal roof?

To estimate a metal roof, measure each plane. Then count panels from the panel’s coverage width, not square footage alone. Add trim, underlayment, and waste. Then price labor.

Skip the panel-count step for a per-square guess, and you miss every panel cut short at a hip or valley.

## How many panels does a metal roof estimate need?

Panel count depends on coverage width, and coverage width depends on the fastener type, not the brand. Two independent manufacturer spec sheets confirm the same split.

| Fastener type | Typical panel coverage | Source | Captured |
| --- | --- | --- | --- |
| Standing seam | 12, 16, or 18 inches | McElroy Metal, Medallion-Lok | Sept 25, 2026 |
| Standing seam | 12 to 18 inches | Union Corrugating panel line | Sept 25, 2026 |
| Exposed fastener | 36 inches | McElroy Metal, Max-Rib | Sept 25, 2026 |
| Exposed fastener | 24, 32, or 36 inches | Union Corrugating panel line | Sept 25, 2026 |

Both agree. Standing seam narrows to 12 to 18 inches. Exposed fastener spans 24, 32, or 36 inches, depending on the profile.

Divide plane width by coverage width, then round up. A 30-foot-wide plane needs 23 panels at 16 inches. The same plane needs 10 panels at a 36-inch exposed fastener panel.

## How to estimate a metal roof, step by step

Run these four moves in order, for every plane on the roof.

1. Measure each roof plane and confirm the pitch Measure length and width of every plane separately. Confirm the pitch; a low-slope plane can need different underlayment than a steep one.
2. Count panels from the coverage width Divide plane width by the coverage width, 12 to 18 inches standing seam or 24, 32, or 36 inches exposed fastener, and round up.
3. Add trim, flashing, underlayment, and fasteners Price ridge cap, eave, rake, valley, and wall flashing by the linear foot. Add underlayment by the square and clips or fasteners by the panel, per the manufacturer’s guide.
4. Add waste, then price labor and total the quote Add extra panels for hips, valleys, and penetrations; a gable needs less than a cut-heavy roof. Price labor, then itemize every line.

## What trim, flashing, and waste does the estimate need?

Trim and flashing are not part of the panel count. Ridge cap closes the peak. Eave and rake trim close the edges. Valley and wall flashing seal every joint.

Price each by the linear foot. Underlayment runs by the square. Clips follow the manufacturer’s spacing table for the load on that job.

Waste comes from cuts, not the base count. A gable with no valleys wastes very little. A hip roof with dormers loses more to angle cuts at every valley, so count the actual cuts on the plan first.

## What do roofers cost per hour?

Roofers earn a $27.95 mean hourly wage nationally (BLS OEWS, May 2025). That is base wage only; tax, insurance, and markup still ride on top.

| Measure | Value | Source |
| --- | --- | --- |
| Mean hourly wage | $27.95 | BLS OEWS, May 2025, occupation 47-2181 Roofers |
| Median hourly wage | $26.65 | BLS OEWS, May 2025, occupation 47-2181 Roofers |
| Mean annual wage | $58,140 | BLS OEWS, May 2025, occupation 47-2181 Roofers |

BLS reports the mean. Your local wage moves the number. So does your crew’s speed on this panel profile.

Honest note: this piece skips a panel dollar price. The manufacturers checked here, McElroy Metal and Union Corrugating, do not post panel prices on their product pages. Price panels from your supplier’s current quote for the profile and gauge on the job.

## Build the metal roof estimate

SimplyWise Cost Estimator turns a roof photo into an itemized estimate in about 6 seconds. Material, labor, and fee lines are editable, so add your own panel count and waste allowance on top.

Send a branded quote the client signs to approve. It is $29.99/mo or $239.99/yr, about $20/mo on annual, with a 7-day free trial.

## Keep reading

- Metal Roof Cost Calculator (https://www.simplywise.com/blog/metal-roof-cost-calculator/): price ranges by profile.
- How to Estimate a Roofing Job (https://www.simplywise.com/blog/how-to-estimate-roofing-job/): the method for shingle and flat roofs.
- Roofing Estimate Template (https://www.simplywise.com/blog/roofing-estimate-template/): build the quote once you have the numbers.

## Sources

### Manufacturer panel specs

- McElroy Metal, Medallion-Lok spec sheet (https://www.mcelroymetal.com/medallion-lok), captured 2026-09-25.
- McElroy Metal, Max-Rib spec (https://www.mcelroymetal.com/metal-roofing-panel), captured 2026-09-25.
- Union Corrugating panel listing (https://www.unioncorrugating.com/products/all-panels/), captured 2026-09-25.

### Wage data

- BLS OEWS, May 2025, occupation 47-2181 Roofers (https://www.bls.gov/oes/special-requests/oesm25nat.zip), captured 2026-09-25.
- SimplyWise Cost Estimator, App Store (https://apps.apple.com/us/app/simplywise-cost-estimator/id6670619664), verified 2026-09-25.

## Frequently asked questions about how to estimate a metal roof

### The panels

**How many panels does a metal roof estimate need?**

Divide each plane’s width by the panel’s coverage width, then round up. Coverage is 12 to 18 inches for standing seam or 24, 32, or 36 inches for exposed fastener. Run the math per plane and add the planes together; never one blended number for the whole roof.

### Waste and labor

**How much waste should I add to a metal roof estimate?**

Count the actual cuts on the roof plan rather than applying one percentage to every job. A gable with no valleys needs very little extra panel; a hip roof with dormers and several valleys loses more to angle cuts at each of those lines.

**What do roofers cost per hour in 2026?**

The national mean is $27.95 an hour (BLS OEWS, May 2025). That covers wage only; payroll tax, insurance, and your markup still need adding before it is your labor line.

### Pricing the job

**Can I measure a roof for a metal roof estimate with my phone camera instead of a tape?**

Tape the roof or start from a photo. SimplyWise Cost Estimator turns a roof photo into an itemized estimate in about 6 seconds. Every material, labor, and fee line stays editable, so you can enter your own measured panel count on top.

**Does SimplyWise Cost Estimator build a metal roof estimate for me?**

It builds material, labor, and fee line items from a photo, each with unit, quantity, and price per unit. Enter the panel count and labor rate you calculated on the matching lines. Pricing is $29.99/mo or $239.99/yr, with a 7-day free trial.

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## About SimplyWise

SimplyWise, Inc. (New York, NY) builds mobile apps for contractors, tradespeople, and small business owners. The SimplyWise Cost Estimator turns a job site photo into an itemized estimate with labor and material costs in about 6 seconds, and the client signs the branded quote to approve it. It is rated 4.8 on the App Store. It is free to try with a 7-day free trial, then $29.99 per month or $239.99 per year (about $20 per month on the annual plan), and one subscription includes every app in the SimplyWise suite.

- Download: https://www.simplywise.com/download
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