The Purpose Wood Standard
We trace every piece. Here is exactly how.
The Purpose Wood standard is the shop’s practice of tracing every slab and board to its source: species, where in Chicago it came down, why, and its kiln moisture content. It is a documented practice you can read, not a third-party certification or a badge that was purchased.
What this is, and what it is not
This is a practice, not a certificate.
We want to be straight with you. The Purpose Wood standard is not a third party certification. We did not buy a badge or pass an audit. It is a habit we keep and a record we publish. We track each piece by hand and show you the data. We would rather under-promise and over-document than wave a logo we cannot back up.
The record
Four facts travel with every piece.
Species
What it actually is, named honestly. "WALNUT" is walnut, not "walnut tone."
Source
Where in the Chicago area the tree stood. Down to the street when we know it.
Reason
Why it came down. Storm, disease, construction, or end of life on a parkway. We do not cut healthy trees for stock.
Process
How it was milled and dried, and the final moisture content. The number, not a vibe.
Urban salvage
Most of it grew up in Chicago.
The city loses thousands of trees a year. Storms, disease, road work, and old age. Most of that wood gets chipped or dumped. We catch what we can before it does, mill it, and dry it into something worth keeping. A walnut that shaded a Bucktown sidewalk for sixty years should not end up as mulch. It should end up as your table.
The tag
Every slab carries one. Here is how to read it.
The same record lives on the product page and, when we can, on a physical tag stamped into the piece. Species, source, reason, and moisture. No mystery lumber.
Provenance passport
- Lot ID
- PW-0421
- Species
- Black Walnut
- Chicago origin
- Wabansia Ave, Bucktown, Chicago
- Removal reason
- Storm damage, spring 2024
- Kiln moisture
- Kiln dried to 7%
- Now
- Slab, and the June "WALNUT" drop
FAQ
The standard, answered.
What is urban salvaged wood?
Urban salvaged wood is lumber milled from trees removed in a city or suburb rather than logged from a forest. Common reasons for removal include storm damage, disease such as emerald ash borer, construction, and natural end of life. Salvaging this wood keeps usable hardwood out of landfills and wood chippers.
Is salvaged wood good enough to build with?
Yes, when it is dried correctly. We kiln dry our slabs to a stable moisture content, usually 6 to 9 percent for interior use, and grade each piece before it sells. Urban hardwoods like walnut, oak, maple, and ash are the same species furniture makers prize.
What moisture content should furniture wood be?
For interior furniture and millwork, hardwood is generally dried to 6 to 9 percent moisture content so it stays stable indoors. We publish the exact reading for every slab, so you are never guessing about how dry your wood actually is before you build with it.
Does Purpose Wood cut down living trees for lumber?
No. We work with trees that have already come down or are scheduled for removal for safety, disease, or construction reasons. We do not fell healthy trees to make stock. The wood we sell would otherwise have been chipped, dumped, or burned.