Producer
Viance, LLC
American wood treatment chemical company (HQ Charlotte NC; private; formerly Osmose Wood Preserving / Wood Treatment Products); produces copper-based wood preservatives including CA-B (Copper Azole Type B), ACQ-D, and micronized copper formulations (MCA, MCQ) for pressure-treated lumber manufacturers. Viance's MCA (Micronized Copper Azole) technology uses nano-scale copper particles suspended in water rather than dissolved copper salts — reducing wood corrosivity with common metals (less reactive to galvanized fasteners and aluminum deck hardware than ACQ dissolved copper). Viance sells directly to pressure-treating plants (Baxter Lumber, Universal Forest Products, Cox Industries) and distributes preservative chemicals into the pressure-treated supply chain serving US home improvement retailers (Home Depot, Lowe's). The connection from Viance's Charlotte NC chemical plant to every deck and ground-contact lumber frame in a US backyard is a supply chain few homeowners contemplate.
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Copper-Based Wood Preservatives
85%Commercial & Industrial Wood Treatment
15%
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Concentration2024
The US residential pressure-treated lumber preservative market is a duopoly of Arxada (formerly Lonza Wood Protection, ACQ IP) and Viance (CA-B, MCA). Two private companies — one PE-owned Swiss specialty chemical company and one private North Carolina-based company — control the chemistry specifications for virtually all residential pressure-treated lumber sold in the US. Their competing formulations (ACQ vs. CA-B/MCA) have driven different downstream supply chain implications: ACQ's dissolved copper is more corrosive to aluminum and galvanized fasteners, while Viance's micronized copper (MCA/MCQ) is less reactive — meaning the choice of preservative formulation affects what type of fasteners, connectors, and hardware a builder or homeowner must use. The fastener and hardware manufacturers (Simpson Strong-Tie, USP Structural Connectors) have had to develop specific stainless steel and hot-dip galvanized products in response to the Arxada/Viance chemistry duopoly's decisions.
Viance, LLC ↗Origin2023
Viance LLC descends from Osmose Wood Preserving's residential wood treatment business — Osmose was one of the original CCA (chromated copper arsenate) producers and transitioned to ACQ and copper azole formulations after the 2004 CCA phase-out for residential use. The Osmose residential wood treatment assets were eventually reorganized into Viance as a standalone entity focused on the residential/commercial pressure-treating market. Viance's Charlotte NC base reflects the concentration of wood preservation chemical formulation in the southeastern US, near the major pressure-treating plants (Cox Industries in South Carolina, Baxter Lumber in North Carolina) and southeastern US lumber production clusters. The supply chain for a treated pine deck board: Viance Charlotte → pressure-treating plant in SC or NC → Home Depot distribution → homeowner backyard.
Viance, LLC ↗