Sheet Metal Products Price Trends: Estimator PPI Q&A Guide
Trade subcontractors fabricating HVAC ductwork, installing architectural flashing, or bidding custom metal trim must navigate steady shifts in material costs. The following Q&A explains what the federal data shows, how historical price levels compare, and how estimators can use benchmark metrics to protect their bids.
What is the current price trend for sheet metal products?
Federal producer pricing for sheet metal products continued its upward trajectory into late 2026. According to the U.S. Bureau of Labor Statistics Producer Price Index series WPU1073, the index for sheet metal products stood at 361.1 in September 2026. This metric is not seasonally adjusted and is measured against a base period of 1982 = 100.
On a month-over-month basis, the index rose from 359.1 in August 2026 to 361.1 in September 2026, marking an increase of +0.6%. Over a 12-month span, the index increased from 338.5 in September 2025 to 361.1 in September 2026, representing a jump of +6.7%. Subcontractors building bids for mechanical duct systems and flashing packages should recognize that prices are maintaining an upward climb rather than leveling out.
How do current sheet metal prices compare to previous years?
The September 2026 reading of 361.1 represents the highest monthly value recorded across the entire data window from January 2017 to September 2026. As a result, the latest index value sits at +0.0% versus the historical high. By comparison, the lowest monthly value within this window was 200.3, recorded in January 2017.
Comparing the latest figures against older project baselines underscores substantial cumulative price movement:
- Two years earlier: In September 2024, the index was 321.4, resulting in a +12.3% change to the September 2026 level.
- Five years earlier: In September 2021, the index registered at 278.1, showing a +29.8% change to latest.
- Pre-pandemic baseline: In January 2020, the index stood at 217.6, meaning sheet metal product prices have risen +66.0% compared to pre-pandemic conditions.
What do the annual averages and monthly figures demonstrate?
Annual averages calculated from monthly BLS reports demonstrate how steadily sheet metal costs have climbed over the past decade:
- 2017: 202.3
- 2018: 212.7
- 2019: 218.2
- 2020: 217.0
- 2021: 259.5
- 2022: 313.6
- 2023: 316.9
- 2024: 321.2
- 2025: 333.1
- 2026: 351.5 (computed for January through September only)
Over the 13 consecutive months leading up to September 2026, monthly index values tracked continuous gains with minimal interruption: September 2025 was 338.5, October 2025 was 338.7, November 2025 was 337.4, and December 2025 was 338.9. In 2026, values advanced monthly from 340.2 in January, to 343.1 in February, 346.5 in March, 349.7 in April, 353.0 in May, 354.5 in June, 356.4 in July, 359.1 in August, and 361.1 in September.
Key BLS PPI figures for sheet metal products
The table below summarizes primary index benchmarks for commodity series WPU1073 across key historical reference periods.
| Timeframe / Reference Point | PPI Index Value | Change to Latest (September 2026) |
|---|---|---|
| Latest Month (September 2026) | 361.1 | 0.0% |
| One Year Earlier (September 2025) | 338.5 | +6.7% |
| Two Years Earlier (September 2024) | 321.4 | +12.3% |
| Five Years Earlier (September 2021) | 278.1 | +29.8% |
| Pre-Pandemic Baseline (January 2020) | 217.6 | +66.0% |
| Window High (September 2026) | 361.1 | +0.0% |
| Window Low (January 2017) | 200.3 | N/A |
How should estimators protect HVAC duct and flashing bids?
Because recent monthly PPI values remain preliminary and are subject to revision for four months after initial publication, estimators must build clear contractual safeguards into extended bid proposals. Subcontractors should integrate structured price escalation clauses directly tied to recognized indexes like series WPU1073. This establishes an objective method to adjust contract pricing if fabrication commences months after bid submission.
Additionally, trade contractors should state vendor quote lifespans clearly inside their bid exclusions and clarifications. By referencing verified commodity tracking published by the U.S. Bureau of Labor Statistics PPI data portal, estimators can provide verifiable rationale during contract negotiations when material spikes occur.
Sources
U.S. Bureau of Labor Statistics, Producer Price Index series WPU1073
Published October 31, 2026. No affiliate links on this page. Facts come from the sources linked above; check them for updates.