To best serve our utility industry customers in North America. Copper Care Wood Preservatives, Inc. has partnered with Osmose Utilities Services to be the exclusive distributor to utilities and utility services of our wood preservatives in North America. If you are a Utility or Utility Contractor or other utility service provider please contact Osmose Utilities Services products in North America. To place an order, 770.632.6700 (option 3) or products@osmose.com
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Copper Care Wood Preservatives, Inc. can supply your company with the copper naphthenate solution you need. Cu-Nap Concentrate and ready-to-use Tenino Copper Naphthenate® are available in a wide variety of packaging options: two-hundred- and seventy-gallon totes down to pint bottles. Pints of Tenino Copper Naphthenate® are favored by utility linemen, while single gallon containers of ready-to-use Tenino Copper Naphthenate® are stocked by many fine retailers. 55 Gallon drums and 260 gallon DOT totes of Cu-Nap Concentrate are economical solutions for many bulk fence post treaters - Copper Care Wood Preservatives' offers Tenino Copper Naphthenate® and Cu-Nap Concentrate in packaging that works for you.
In a major 50+ year study by the USDA Forest Product Laboratories, wood treated with copper naphthenate demonstrated similar performance to that of creosote treated woods.
Copper Naphthenate is an oil-borne wood preservative classified as a General Use pesticide by the Environmental Protection Agency (EPA) under the Federal Insecticide, Fungicide and Rodenticide Act (FIFRA). Tenino Copper Naphthenate®, and Cu-Nap Concentrate are EPA registered “general use” preservatives and have been standardized for use by the American Wood Protection Association (AWPA). Copper naphthenates may be used in pressure treatment for utility poles, bridge timbers and railroad crossties. Copper naphthenate is the only pesticide product not Labeled Restricted Use in this market. Copper naphthenate has a low mammalian toxicity profile.
Our Copper Naphthenates are EPA Registered Pesticides. Always read and follow all Label Directions. EPA Labels carry the full force of Federal Law
Copper Care Wood Preservatives' Cu-Nap Concentrate (8% Cu as metal) is a liquid Copper Naphthenate wood preservative that can be diluted with diesel or mineral spirits. It is widely used for pressure treatment of ground contact lumber and as a dip treatment for fence posts using a 24-hour soak. Cu-Nap Concentrate is labeled for the treatment of posts, poles, lumber, siding, boxes, roof shakes and shingles, fence pickets, landscape timbers, cellulose textiles, and cordage. Apply by brush, dip, or pressure treatment. Cu-Nap Concentrate is a cost-effective solution for large volume, commercial users. For dilution and other detailed information, refer to the product label, the product flyer, or call us.
Tenino Copper Naphthenate® contains 2% metallic copper (by volume) and may be used to satisfy AWPA Standard M-4 for field treatment of pressure treated wood.
Copper Naphthenate preservatives containing a minimum of 2.0% copper metal are recommended for material originally treated with copper naphthenate, pentachlorophenol, creosote, creosote solution or waterborne preservatives.
AWPA M4 StandardSection 7 field treatment of wood
USDA Forest Service Forest Products Laboratory studies document long-term performance. American Wood Protection Association (AWPA) Standards ensure peer review and qualify intended applications.
Subterranean Termites
Carpenter Ants
Decay Fungi
Drywood Termites
Wood Destroying Beetles
Powder Post Beetles
Copper is both repellent and toxic to termites. The University of Hawaii has found Copper Naphthenate in wood at loadings of 1.5 lbs. per cubic foot is resistant to Formosan Termite attack and degradation. Copper Naphthenate will successfully protect against termites only if minimum loadings and sufficient penetration are achieved. Copper Naphthenate is best used to supplement pressure-treated preservative wood protection in aggressive hazard class environments envisioned in AWPA Use Category 4, 4B,4C.
Multiple studies demonstrate no excessive corrosion of hardware and fasteners due to contact with the preservative.
Copper Naphthenate has been used as a wood preservative for over one hundred years with many applications for use, including field boxes, benches, flats, fence posts, water tanks, canvas, burlap, ropes, nets, greenhouses, utility poles, crossarms, and wooden structures in ground contact and above ground contact.
Bright green color of wood freshly treated with copper naphthenate will become brown in outdoor exposure.
Black Nylon fortified HDPE one-gallon jugs and clear PET pints provide excellent resistance to aromatic hydrocarbon degradation. Our containers and copper naphthenate products have a shelf-life rating of five years. A unique induction sealing process utilizes 18-micron copper foil eliminating galvanic degradation.
Copper Naphthenate treated wood waste is neither a listed nor a characteristic hazardous waste according to the current EPA regulations under the Resources Conservation and Recovery Act (RCRA). It may be disposed of in landfills in accordance with federal, state, and local regulations.
The primary constituents of the treating solution are derived and/or manufactured from domestic sources by US owned companies.
EPA Registration Label for Cu-Nap Concentrate
EPA Registration Label for Tenino Copper Naphthenate®
Safety Data Sheet SDS OSHA Cu-Nap Concentrate
Safety Data Sheet SDS OSHA Tenino Copper Naphthenate®
Technical and miscellaneous additional documents about copper naphthenates can be found in our knowledgebase.
Copper Naphthenate provides protection against wood decay and the superior water repellent qualities of an oil borne wood preservative. Copper Naphthenate treatments result in wood that is cleaner to the touch, with minimal excess preservative coming in contact with the environment. Copper Naphthenate is the green choice in preservatives because it is not a restricted use pesticide. With durability equal to or better than other preservatives, Copper Naphthenate is the preferred choice for bridge timbers, barn timbers, Glulam® beams, salt storage domes, protector boards and highway railings. For many applications Copper Naphthenate is the best wood preservative available to contractors and builders. Use Copper Naphthenate when wood will be in contact with the ground and as an end-cut treatment for pressure-treated wood.