Cu-Nap Concentrate is a liquid Copper Naphthenate concentrate containing 8% copper as metal by volume. Cu-Nap Concentrate is a cost-effective bulk solution for large volume, commercial applicators.
is a General Use Pesticide labeled for the treatment of posts, poles, lumber, siding, boxes, roof shakes and shingles, fence pickets, landscape timbers, cellulose textiles, and cordage. Approved application methods include pressure treatment, brush, and dip. Cu-Nap Concentrate enjoys wide usage as a dip treatment for fence posts using a 24-hour soak.
Call Osmose for support and sales!
Provides protection from Termites!
Copper metal 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. Cu-Nap Concentrate will successfully protect against termites when the minimum loadings and sufficient penetration are achieved. Cu-Nap Concentrate is a top choice for pressure-treating lumber intended for ground contact use in aggressive hazard class environments envisioned in AWPA Use Category 4, 4B,4C.
Copper Naphthenate's low mammalian toxicity and EPA Registration as a General-use Pesticide make it a preferred choice over traditional oil-borne preservatives like pentachlorophenol and creosote. Copper Naphthenate has been used as a wood preservative for over one-hundred years. An USDA Forest Product Laboratories study ongoing for over fifty years, has established an estimated service life for utility poles pressure treated with copper naphthenates, such as Cu-Nap Concentrate exceeds 60 years. This estimated service life expectancy is equitable to the performance of poles pressure treated with creosotes. Copper Naphthenate's inclusion in the AWPA preservative standards is assurance Copper Naphthenate is an effective wood preservative you can count on to perform.
The bright green coloration of wood freshly treated with copper naphthenate will fade to a brown copper tone with exposure to the elements outdoors. Use the slider to see how the color of Cu-Nap Concentrate changed on these Cedar Shingles after three months.
The appropriateness of the preservation system for field treatment shall be determined by the type of preservative originally used to protect the product and the availability of a field treatment preservative. Because many preservative products are not packaged and labeled for use by the general public, a system different from the original treatment may need to be utilized for field treatment. Users shall carefully read and follow the instructions and precautions listed on the product label when using these materials 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. Use of copper naphthenate preservatives with a minimum of 1.0% copper metal is appropriate in those regions of the country where the higher concentration material is not readily available.
In corrosion studies Copper Naphthenate demonstrated no excessive corrosion of hardware and fasteners due to contact with the preservative.
Cu-Nap Concentrate Safety Data Sheet (SDS)
Cu-Nap Concentrate EPA Registration Label
Technical performance data and studies of Cu-Nap Concentrate's performance and efficacy and other miscellaneous associated documents are available in our Knowledgebase.
Copper Naphthenate provides protection against wood decay and the superior water repellent qualities of an oil borne wood preservative. Cu-Nap Concentrate treatments result in wood that is cleaner to the touch, with minimal excess preservative coming in contact with the environment. Cu-Nap Concentrate is the green choice in preservatives because it is not a restricted use pesticide. With durability equal to or better than other preservatives, Cu-Nap Concentrate 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 Cu-Nap Concentrate when wood will be in contact with the ground and as an end-cut treatment for pressure-treated wood.