Index lookup · WPU081
Producer Price Index for lumber, a group inside the WPU08 lumber and wood products major group, covering WPU0811 (Softwood Lumber) and WPU0812 (Hardwood Lumber) together rather than either grade alone. Index base: 1982 = 100.
Latest value is 1 month old. Next update expected around Sep 2026.
Free, no account needed. Nothing you enter here leaves your browser.
Enter a base value, a current value, and a contract amount to see the adjustment.
Strongest average month-over-month move historically: February (+1.8% avg).
Framing and general timber supply contracts that buy a mix of softwood and hardwood stock cite this blended series, while a contract buying structural framing lumber specifically should use the softwood-only series instead, since softwood and hardwood prices swing on different demand cycles.
A starting point citing this series by name and code. Replace the bracketed terms with your contract's actual scope before use.
The [affected portion] of the Contract Price shall be adjusted using US PPI — Lumber (BLS series WPU081), published by BLS. Base Period: the index value published for August 2026 (or the month of contract signing, if different) is the Base Value. Adjustment: at each Adjustment Date, the Current Value is the most recently published three-month average of the index (the Averaging Window). The Escalation Factor equals Current Value divided by Base Value. Cap: the Escalation Factor applied under this clause shall not exceed 1.10 or fall below 0.90 (a 10% cap and floor) in any single Adjustment Date, regardless of the index's actual movement. [Replace bracketed terms with your contract's actual affected-portion definition and adjustment-date schedule before use. This is a drafting starting point, not legal advice.]
Want this in a spreadsheet instead? Use =ESCALAKE("wpu081") in Google Sheets →
Free. One email per new value, unsubscribe anytime, no account needed.
A lumber PPI escalation clause compares a current-period Producer Price Index value for the softwood lumber series to the value at contract signing (the base period), turns that into a ratio, then applies the ratio to the contract price or affected line items. Clauses typically name the exact BLS series code, an averaging window, a publication lag, and a cap limiting the maximum adjustment.
Read more →Escalake tracks US PPI — Lumber, applies your formula, and gives both sides a number they can confirm, no spreadsheet required.
We use cookies to run Escalake and to understand site traffic. Choose Accept Minimum for essential cookies plus anonymous visit counting only, or Accept All to also let us link activity to your account. Read our Cookie Policy and Privacy Policy.