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Tenino

Tenino Copper Naphthenate 17% (2% as Metal) Double Strength - Highest Concentration Allowed - 1 Gallon - Wood Preservative

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Features

  • Ready-to-Use Copper Naphthenate 17% (contains 2% copper as metal), meets the AWPA M4 Standard
  • Required by building codes (IBC 2303.1.9 & IRC R317.1.1) on end-cuts of all pressure treated lumber
  • Low VOC (<350g/L) and 100% domestically sourced from recycled copper and reclaimed by-products.
  • Labeled for General Use, and wood treated with Tenino maybe discarded in local landfill
  • Water repellant and both toxic and repellant to termites and other wood destroying insect

Description

Tenino Copper Naphthenate EPA Reg. No. 64405-22-54471 Always read and follow all label directions. For Exterior Use Only! Tenino Copper Naphthenate contains 2% copper as metal as an oil-borne solution, labeled for General Use. This ready-to-use solution in sturdy one gallon resealable jug provides coverage of 100 - 300sq ft., requires no mixing or dilution and may be applied by brush to almost any wood product needing protected from the elements. Treated wood will be protected from infestation of destroying organisms including subterranean termites, drywood termites, wood destroying beetles, powderpost beetles, carpenter ants and decay fungi. It may also be used to protect and prevent warping, swelling, shrinking, and end checking caused by changes in moisture content of wood products, rot, mold, mildew and moss. Tenino can be used for remedial or preventive treatment of standing wooden poles, piling and other existing structures wooden and cellulose utility and construction products including: lumber end cuts timber rail ties posts poles freeway fencing siding boats piers docks boxes roofs shakes cedar shake roofs shingles porches steps fences rails beverage cases Tenino treated wood is suitable for ornamental or planting landscape timbers, ties, wooden seedling trays, outdoor decor, flower boxes and window boxes. Tenino meets the AWPA Standard M4 end-cut requirements for exterior and ground contact field treatments and should be used to fulfill requirements in IBC 2303.1.9, and IRC R317.1.1 whenever pressure treated lumber is cut, or drilled. Tenino is best used to supplement pressure-treated preservative wood protection in aggressive hazard class environments envisioned in AWPA Use Category 4,4B,4C.

Color: Copper


Brand: Tenino


Surface Recommendation: Metal, Wood


Material: Copper,Metal


Model Name: CCWP1090


Color: ‎Copper


Brand: ‎Tenino


Surface Recommendation: ‎Metal, Wood


Material: ‎Copper,Metal


Model Name: ‎CCWP1090


Size: ‎Gallon


Coating Description: ‎Copper Naphthenate Wood Preservative


Item dimensions L x W x H: ‎7 x 4 x 11.5 inches


Item Weight: ‎8.2 Pounds


Finish Type: ‎Copper,Metal


Recommended Uses For Product: ‎exterior


Liquid Volume: ‎1 Gallons


Package Information: ‎Jug


Number of Items: ‎1


Manufacturer: ‎Copper Care Wood Preservatives, Inc.


Unit Count: ‎128 Fluid Ounces


UPC: ‎850098004073


Part Number: ‎CCWP1090-1GAL


Item Weight: ‎8.2 pounds


Product Dimensions: ‎7 x 4 x 11.5 inches


Item model number: ‎CCWP1090-1GAL


Is Discontinued By Manufacturer: ‎No


Finish: ‎Copper,Metal


Volume: ‎1 Liters


Item Package Quantity: ‎1


Number Of Pieces: ‎1


Coverage: ‎100 - 300 sq ft


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: August 20, 2015


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Nov 1

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

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Top Amazon Reviews

    • Requires Protection; Absorbs Well
Arrived promptly and was well packaged to prevent spillage. I wore a respirator, nitrile gloves, long sleeves, and glasses for protection. I applied two coats with a four inch brush and used half a cup to cover a 16 square foot plank, which will contact the ground. Goes on easily, absorbs well. Colors the wood green, so easy to see where you have applied. Strong odor that diminishes daily. Hoping planks last a decade. ... show more
Reviewed in the United States on September 15, 2025 by Bean Head
    • Great product!
Used this on our dock at the lake to help preserve the wood from the moisture. So far, so good. It was recommended by the lumber company where we got the wood, and it seems to be working just fine! So glad we got it. It is very messy to paint on after the fact. If you can treat your wood with it before installation (I know, and extra step, right?), it will be easier to manage. ... show more
Reviewed in the United States on April 16, 2025 by K Norris
    • Initial Use Review: Seems Good
Purchased and used a gallon to provide secondary preventive protection to (a) a new house's 6x6 pressured treated household power pole, (b) the pressured treated plywood backer for the power box, and (c) 168 linear feet of 5/4x6x8' ground contact pressure treated deck boards (ground placement, to help stop unwanted water & dirt erosion). Product is easy to use (I used a 3" foam roller), covering all end cuts and all sides of the lumber (including the deck boards' edges). It does have a distinct odor, though, despite the plastic bottle, ziploc bag, and Amazon box (like another commenter described). The odor lessens over time (for me, it was 3 months of waiting between order and use), and I could barely smell it during application. It soaks into wood well, even "big box store, too wet, lumber". However, for those that care about looks... you are applying a copper based protection to the lumber; It will be greener. Prevention of future decay, for my uses, was the goal. We'll see how it does many years from now... when this review likely won't matter. :) ... show more
Reviewed in the United States on October 6, 2024 by Terry West II
    • Expensive but worth it? There are few alternatives.
Starting with my one dislike is the price, which despite its eye watering elevation appears to be the 2022 norm for the building supplies industry. That is the major downside to this paint. Having said that I’ll be quiet and go on with the review. This is an easy to apply thin green paint which contains 2% copper, which I believe may be the best (currently not banned in most of the US) residual insect killing fungus suppressing ingredient. Its essentially similar to the green color of treated wood since somebody governmental made manufacturers stop using arsenic as wood treatment. It tends to drip, but can be brushed, rolled or used to soak wood, and lasts a long time once it is dry. It smells of naptha, but its use is outdoors only. My intended use is for treating some 6x6 wood I need to make the foundation of a shed. (The reader is warned to not look at store prices of 6x6 treated lumber if they have any sort of condition which might make them prone to fits of outrage. If anything its worse than paint prices.) ... show more
Reviewed in the United States on March 16, 2022 by invisible
    • Good Stuff
Good wood preservative for treating cut treated lumber. Wear gloves when applying to cut ends. Soaks into the wood well.
Reviewed in the United States on August 12, 2025 by Steve Barton
    • Helps keep wood from decaying.
Works to help wood from decaying due to moisture and insects. Used on landscape timbers - they don't have a pressure treatment like most people think. Makes wood green initially, but fades to silver gray after several months.
Reviewed in the United States on July 17, 2025 by Retro86
    • Good high-concentration preservative. Follow instructions.
Foul-smelling stuff, but what do you expect? Penetrates well. Green color when dried fades to green/brown. Don't know how long it will last, but the strength of the smell is encouraging. Wear gloves and know that splashes will be turquoise for a LONG time, if not forever.
Reviewed in the United States on July 20, 2025 by J. Menard
    • Very good stuff, been using it for a few years now.
Meant to get the 19% but 17% is good too. I mix it with deck stain, diesel fuel and motor oil. Works great. No more rotten decks. I am getting too old to be building decks over and over.
Reviewed in the United States on June 13, 2025 by Otto K. Land Jr.

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