Black Locust is a native Appalachian hardwood with 150+ years of proven outdoor performance — no chemical treatment, no annual maintenance, and no additional protection. It outperforms Ipe in short-term cost of ownership, and availability while delivering the same premium aesthetic that high-end architects and homeowners are looking for.
Accoya has built a product with strong sustainability credentials and a confident 50-year warranty. But Accoya itself has only existed commercially since the early 2000s — the longest any real Accoya deck has been in service is roughly 20 years. Its 50-year claim is a projection from accelerated laboratory testing, not from anything actually standing for 50 years. Black locust doesn't need a projection. It has a hundred-plus years of fence posts driven into Appalachian ground by farmers who weren't running an experiment — still there, untreated, undisturbed, still doing their job.
Black locust has been trusted by Appalachian farmers for over a century — fence posts in the ground for 80 to 100 years with no treatment whatsoever. That same natural oil content and density that kept those posts standing is what makes black locust an exceptional architectural decking material. Ipe is durable, but requires annual oiling to maintain performance. Without it, it checks, cracks, and grays unevenly over time.
Per linear foot, black locust and Ipe are priced similarly. The gap opens over time. Ipe demands annual oiling, periodic refinishing, and occasional board replacement — costs that compound significantly across a deck’s lifetime. Black locust requires nothing after installation. For homeowners and project managers calculating true cost of ownership, black locust wins decisively.
Ipe is a tropical hardwood imported from South American rainforests — a supply chain with well-documented deforestation consequences and zero domestic traceability. Black locust grows in the Appalachian Mountains, is harvested locally, air dried naturally, and finished by an Amish sawmill in Central Pennsylvania. The sourcing story is not comparable. One has a clean chain from mountain to project. The other does not.
Both woods are genuinely beautiful. Ipe is dark, dense, and rich. Black locust comes in a warm golden-yellow that weathers naturally to a silver-gray patina over time — no staining, no oiling, no intervention required. That natural transformation is part of what architects and homeowners come to love. It ages with the home, not against it.
We work directly with architects, designers, and contractors.
Everything you need to specify black locust is on our main site.
The questions below address the most common points of comparison between black locust and Ipe raised by architects, contractors, and homeowners during the specification process.
The questions below address the most common points of comparison between black locust and Ipe raised by architects, contractors, and homeowners during the specification process.
Black locust has been doing what Ipe does — naturally, domestically, and without maintenance — for 25 years of architectural use and a century of proven field performance. Explore the full story on our main site.
