DNA Paris Design Awards 2024 Winner

A sustainable drainage system that uses Black Locust Lumber to achieve the highest environmental standards.

Learn about Proflow
“Driving innovation by creating sustainable Black Locust products that capture and store carbon with a positive impact on the built environment.”
About

The original pioneers of Black Locust as an architectural hardwood.

Black Locust Lumber transformed Black Locust from a traditional agricultural material—once used for fence posts and firewood—into a complete architectural product line. For over 25 years, we’ve led its evolution into premium siding, decking, and paver applications, positioning it as a true domestic alternative to tropical hardwoods.As a U.S.-based, fully integrated sawmill, we work exclusively with Black Locust. Sourced from the Appalachian region and crafted by skilled local craftsmen, every step of our process is focused on refining and elevating this single species—bringing it to the forefront of modern architectural design.

Our mission

To pioneer Black Locust as North America's next-generation architectural hardwood.

Our mission is to elevate a native U.S. species—long trusted by farmers for its strength and durability—into the forefront of modern building. We are committed to educating the market on Black Locust as a high-performance alternative to tropical hardwoods, while championing real, natural wood over composites and energy-intensive modified materials. By advancing its use in decking, siding, and outdoor design, we aim to redefine how architects and builders specify wood—grounded in authenticity, longevity, and American-grown craftsmanship.

OUR SAWMILL

Black Locust Products

Black Locust Lumber is a fully integrated sawmill in central Pennsylvania,  supplying Black Locust products throughout the United States.
Benefits

Benefits of Black Locust

Building the Future with natural black locust lumber

Natural Rot Resistance

Inherently resistant to decay without any chemical treatment.

50+ Year Lifespan

Exceptional longevity that outlasts most conventional materials.

Domestic Hardwood

Locally sourced, supporting sustainable domestic forestry.

No Chemical Treatment

Pure, untreated timber — safe for people and the environment.

No Maintenance

Set and forget — black locust asks for nothing once installed.

Ages to Silver Patina

Gracefully weathers to a distinguished silver-grey over time.

partners

Proudly collaborating

Introducing our ever-growing professional network

https://mchughconstruction.com/
https://lettire.com/
https://www.level10gc.com/
https://www.ashleymcgraw.com/
https://appelosborne.com/
https://mchughconstruction.com/
https://lettire.com/
https://www.level10gc.com/
https://www.ashleymcgraw.com/
https://appelosborne.com/
https://mchughconstruction.com/
https://lettire.com/
https://www.level10gc.com/
https://www.ashleymcgraw.com/
https://appelosborne.com/
https://bettecring.com/
https://www.gluckmantang.com/
https://hb1872.build/
https://aecom.com/
https://www.newschool.edu/parsons/constructed-environments-school/
https://bettecring.com/
https://www.gluckmantang.com/
https://hb1872.build/
https://aecom.com/
https://www.newschool.edu/parsons/constructed-environments-school/
https://bettecring.com/
https://www.gluckmantang.com/
https://hb1872.build/
https://aecom.com/
https://www.newschool.edu/parsons/constructed-environments-school/
https://www.designworkshop.com/index.html
https://ncsconstructionllc.com/
https://www.ncsinc.org/
https://www.pfaulong.com/
https://futuregreenstudio.com/
https://www.designworkshop.com/index.html
https://ncsconstructionllc.com/
https://www.ncsinc.org/
https://www.pfaulong.com/
https://futuregreenstudio.com/
https://www.designworkshop.com/index.html
https://ncsconstructionllc.com/
https://www.ncsinc.org/
https://www.pfaulong.com/
https://futuregreenstudio.com/
https://www.rhainc.net/
https://cbi-sd.com/
https://www.wbcnet.org/member_news/wdg-architecture-launches-special-projects-initiative-with-gift-to-catholic-university/
https://architecture.catholic.edu/
https://www.artaconstruction.com/
https://www.rhainc.net/
https://cbi-sd.com/
https://www.wbcnet.org/member_news/wdg-architecture-launches-special-projects-initiative-with-gift-to-catholic-university/
https://architecture.catholic.edu/
https://www.artaconstruction.com/
https://www.rhainc.net/
https://cbi-sd.com/
https://www.wbcnet.org/member_news/wdg-architecture-launches-special-projects-initiative-with-gift-to-catholic-university/
https://architecture.catholic.edu/
https://www.artaconstruction.com/
Founders of Black Locust lumber
foudners

The founders

D. Stubby Warmbold, of Black Locust Lumber, has a history of working within the wood industry from his early years of forestry in Canada to his pioneering developments in urban forestry in the United States. He is a true believer in adding value to underutilized forestry sources. Maria Warmbold’s expertise in fashion and design has elevated Black Locust Lumber into an architectural product studio. Their lifelong mission is to create sustainable wood products while giving back to the communities in which both the people and trees are grown.