---
product_id: 38231574
title: "Copper Naphthenate 17% (2% as Metal) Double Strength - Highest Concentration Allowed - 1 Gallon - Wood Preservative"
brand: "tenino"
price: "858 zł"
currency: PLN
in_stock: true
reviews_count: 8
category: "Tenino"
url: https://www.desertcart.pl/products/38231574-copper-naphthenate-17-2-as-metal-double-strength-highest-concentration
store_origin: PL
region: Poland
---

# Low VOC <350g/L - Eco-Conscious Protection 100-300 sq ft Coverage - Efficient Application 17% Copper Naphthenate - Ultimate Wood Defense Copper Naphthenate 17% (2% as Metal) Double Strength - Highest Concentration Allowed - 1 Gallon - Wood Preservative

**Brand:** tenino
**Price:** 858 zł
**Availability:** ✅ In Stock

## Summary

> 🛠️ Fortify Your Wood, Future-Proof Your Projects!

## Quick Answers

- **What is this?** Copper Naphthenate 17% (2% as Metal) Double Strength - Highest Concentration Allowed - 1 Gallon - Wood Preservative by tenino
- **How much does it cost?** 858 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/38231574-copper-naphthenate-17-2-as-metal-double-strength-highest-concentration)

## Best For

- tenino enthusiasts

## Why This Product

- Trusted tenino brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile Outdoor Armor:** Perfect for end-cuts, poles, fences, decks, docks, and more—prevents warping, swelling, and insect damage in aggressive environments.
- • **Eco-Friendly & Sustainable:** Low VOC content (<350g/L) and made from 100% recycled copper and reclaimed by-products for guilt-free durability.
- • **Code-Approved & Ready to Use:** Meets AWPA M4 and building codes (IBC 2303.1.9 & IRC R317.1.1) with no mixing required—just brush on and protect.
- • **Maximum Strength Wood Shield:** Double strength 17% copper naphthenate formula delivers industry-leading protection against termites, fungi, and decay.
- • **Visible & Reliable Application:** Copper tint ensures easy coverage tracking, fast drying, and long-lasting wood preservation that keeps your projects looking sharp.

## Overview

Tenino Copper Naphthenate 17% is a premium, ready-to-use wood preservative that offers double-strength protection with 2% copper metal content. It meets stringent AWPA M4 standards and building codes for end-cut treatment of pressure-treated lumber. This eco-conscious formula features low VOC emissions and is made from recycled materials, providing broad-spectrum defense against termites, decay fungi, and moisture damage. Ideal for exterior wood applications, it covers 100-300 sq ft per gallon and ensures visible, reliable application with a copper tint.

## 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.

Review: 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.
Review: I’m impressed - Great stuff! Wear your PPE though, stains whatever it touches. Easy application, dries quickly, good penetration, nothing bad to say.

## 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0147OQQ84 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #63,080 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #94 in Household Stains |
| Brand | Tenino |
| Coating Description | Copper Naphthenate Wood Preservative |
| Color | Copper |
| Coverage | 100 - 300 sq ft |
| Customer Reviews | 4.6 4.6 out of 5 stars (475) |
| Date First Available | August 20, 2015 |
| Finish | Copper,Metal |
| Finish Type | Copper,Metal |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 8.2 pounds |
| Item dimensions L x W x H | 7 x 4 x 11.5 inches |
| Item model number | CCWP1090-1GAL |
| Liquid Volume | 1 Gallons |
| Manufacturer | Copper Care Wood Preservatives, Inc. |
| Material | Copper,Metal |
| Model Name | CCWP1090 |
| Number Of Pieces | 1 |
| Number of Items | 1 |
| Package Information | Jug |
| Part Number | CCWP1090-1GAL |
| Product Dimensions | 7 x 4 x 11.5 inches |
| Recommended Uses For Product | exterior |
| Size | Gallon |
| Surface Recommendation | Metal, Wood |
| UPC | 850098004073 |
| Unit Count | 128 Fluid Ounces |
| Volume | 1 Liters |

## Product Details

- **Brand:** Tenino
- **Color:** Copper
- **Material:** Copper,Metal
- **Model Name:** CCWP1090
- **Surface Recommendation:** Metal, Wood

## Images

![Copper Naphthenate 17% (2% as Metal) Double Strength - Highest Concentration Allowed - 1 Gallon - Wood Preservative - Image 1](https://m.media-amazon.com/images/I/61ULdntu0xL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Give me the full description the chemical**
A: Tenino has 2% copper in it (which puts it at around 18% copper napthanate). The Rust-Oleum (with 9.2% copper napthanate) has 1% copper. And the Copper Green brand( at 10% copper napthanate) has  1.18% copper. Napthanate is essentially an acid and kills stuff instantly. The 'copper' technically a type of salt that's derived from the napthanate. The more copper napthanate 'salt' the deadlier (though even a small amount will kill life over time. Unlike table salt, these copper 'salts' won't readily wash away with water. They're non-water soluble and quickly crystallize in the pours of the wood, leaving a very long lasting protectorant against organic life forms (ants, wasps, termites and every kind of fungus).  No matter how you do the math, within reason, the more of this stuff you apply the more salt will remain. The napthanate solution is super-fast drying... less than an hour (though it'll continue to out-gas for a week or more). On dry wood it's easy to get two and even three wet brush-strokes to soak-in from a single coating. So, using even the weakest solution (the Rust-Oleum) on dry wood might result in 3% or more of salt that got into the pours in one application. Wet wood would not absorb it deeply, but the salt would coat the surface (and crystalize into the topical pours) at a full 1%. The point is, even .5% of nathanate salt would kill anything that contacts it for a life time.  Lastly, it seems like a lot of people want to get a lot of deep penetration. But, unless abrasion is an issue: such as foot traffic or trailer boards where loads will abrade the surface or wood rot may have already started, penetration is of minimal concern. It's like sprinkling cyanide granules on a hamburger versus mixing it in to the meat. It simply won't make a difference.

**Q: Must you paint wood that's been treated with Tenino with an oil based primer?  Can you then put a topcoat of water based paint?  What paints are best?**
A: No further treatment, primer or coating is necessary. If further coatings of additional paints, primers, etc., are desired for best results we must recommend the use of an oil base product. The hydrophobic properties of the carrier (inactive ingredients) may produce undesirable results if a water borne product is overlaid.

**Q: Approx how much surface area can be treated with one gallon and can it be applied with a sprayer?**
A: I used a gallon to build 8 4'x10'x10" raised garden beds.  It covered about 160 sq ft.  I used a paint brush to apply it to all surfaces that are in contact with the soil.  I don't see why a sprayer wouldn't work, but it does create a strong green stain that probably wouldn't wash off.  One year in the ground and no signs of rot.

**Q: what does this look like aged on PT? any pics?**
A: Assuming that by PT you are asking about pressure treated lumber the answer varies. Lumber pressure treated with copper naphthenate should have very little coloration variance after supplemental treatment with Tenino. This should be applicable to a lesser degree for most metallic copper based pressure treatment systems. However, without knowing the exact species and pressure treatment system and retention levels it would be impossible to be more specific.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Requires Protection; Absorbs Well
*by B***D on September 15, 2025*

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.

### ⭐⭐⭐⭐⭐ I’m impressed
*by T***N on January 27, 2026*

Great stuff! Wear your PPE though, stains whatever it touches. Easy application, dries quickly, good penetration, nothing bad to say.

### ⭐⭐⭐⭐⭐ Initial Use Review: Seems Good
*by T***I on October 6, 2024*

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. :)

## Frequently Bought Together

- Tenino Copper Naphthenate 17% (2% as Metal) Double Strength - Highest Concentration Allowed - 1 Gallon - Wood Preservative
- Green Products Co. 30001 Copper Green Wood Preservative, 1-Gallon
- Rust-Oleum 1904A Wolman (Woodlife) CopperCoat Green Wood Preservative-Below Ground, Quart

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-03-17*