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Copper Naphthenate 17% (2% as Metal) - 1 Gallon - Wood Preservative

Brand: Tenino

343

Amazon's Choice in Household Stains by Tenino

Price:

$62.95 ($0.49 / Fl Oz)

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Purchase options and add-ons

Color	Copper
Brand	Tenino
Surface Recommendation	Wood, Metal
Material	Copper,Metal
Size	Gallon

About this item

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

› See more product details

Customer ratings by feature

Easy to use

4.6

Value for money

4.4

Scent

3.4

See all reviews

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Product information

Technical Details

Color

‎Copper

Brand

‎Tenino

Surface Recommendation

‎Wood, Metal

Material

‎Copper,Metal

Size

‎Gallon

Item Dimensions LxWxH

‎7 x 4 x 11.5 inches

Item Weight

‎8.2 Pounds

Finish Type

‎Copper,Metal

Recommended Uses For Product

‎exterior

Manufacturer

‎Copper Care Wood Preservatives, Inc.

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

Batteries Included?

‎No

Batteries Required?

‎No

Additional Information

ASIN

B0147OQQ84

Customer Reviews

343

4.6 out of 5 stars

Best Sellers Rank

#58,528 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement)
#95 in Household Stains

Date First Available

August 20, 2015

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.

Product Warranty: For warranty information about this product, please click here

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Product 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.

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	This Item Tenino Copper Naphthenate 17% (2% as Metal) - 1 Gallon - Wood Preservative	Recommendations Outlast - Q8 Log Oil Wood Preservative for Decks, Log Homes, End Cuts, & More - Clear - 1 Gallon	dummy Preservation Solutions - Pentacryl 5 Gallon - Green Wood Stabilizer - Treatment for Drying of Fresh Cut Wood - Good for Softwood & Hardwood - Woodworking, Carving, and Turning Solution	dummy Green2 Green Products 33004 Copper Brown Wood Preservative for Surface Protection, 1-Quart	dummy Nisus 30201 PenaShield 128oz Clear Wood Preservative	dummy Rust-Oleum 01901 Coppercoat Wood Preservative, 0.88-Gallon, Green
	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart
Price	$62.95	$97.50	$319.95	$27.01	$49.99	$50.50
Delivery	Get it as soon as Thursday, Apr 4	Get it as soon as Thursday, Apr 4	—	—	Get it as soon as Monday, Apr 8	Get it as soon as Thursday, Apr 4
Customer Ratings	4.6343	4.7266	5.06	3.770	4.5319	4.5318
Sold By	Prime Tools	J&H Discount Sales	Preservation Solutions, LLC	Paint Supply	JandSProducts	Evenu
color	Copper	Clear	—	Copper Green Brown	Clear	Green
size	Gallon	1 Gallon	5 Gallon	Quart	—	1 Gallon
finish type	Copper,Metal	Oil	—	—	—	Copper
material	Copper,Metal	Wood	Wood	Wood Based	Wood	Wood
weight	8.2 pounds	—	—	1.4 pounds	—	1 pounds

Customer reviews

4.6 out of 5

343 global ratings

How customer reviews and ratings work

Customers say

Customers like the value, absorbency and ease of use of the household stain. For example, they mention it works well as a preservative, soaks in nicely and is easy to apply with a paint brush. Some are happy with color. That said, opinions are mixed on the smell and quality.

AI-generated from the text of customer reviews

22 customers mention22 positive0 negative

Customers find the value of the stain to be great. They say it works well as a preservative, and is well worth the price. Some mention that it works great on sun faded PT decks.

"Does a good job. Negative not returnable, watch the fine print of Prime!" Read more

"I’ve been using this for years and it works great! I usually saturate it 2-3x. Let it cure in the sun for a couple of weeks before painting...." Read more

"...Well, I need ground contact so this product works wonderful (if you apply two or three coats with drying in between)...." Read more

"Hard to find this stuff. Works great on my sun faded PT decks." Read more

15 customers mention15 positive0 negative

Customers find the stain absorbs nicely, and is excellent for soaking dry posts. They say it is easy to use and well absorbed into the wood. Customers also mention that it is great for soaked ropes, nets, and fence posts. It allows great penetration into dry wood, and provides a great moisture barrier.

"...Application is a breeze to, seems to penetrate well on the side of soft pine and, of course, the end grain soaks it way up really quickly...." Read more

"...ground contact as this is a very easy product to use and well absorbed into the wood...." Read more

"...I expect the wood to last outdoors after the treatment. It sinks into the wood well." Read more

"...It absolutely absorbed into the wood and dried quickly...." Read more

13 customers mention10 positive3 negative

Customers find the application of the stain to be easy. They mention that it is easy to apply with a paint brush, and that it penetrates well on the side of soft pine.

"...This was easy to apply, definitely turned the wood green to indicate it’s been applied (which was great since our inspector was a little special)...." Read more

"...I was outdoors with a light breeze though. Application is a breeze to, seems to penetrate well on the side of soft pine and, of course, the end..." Read more

"...choice that I would recommend for ground contact as this is a very easy product to use and well absorbed into the wood...." Read more

"...Not easy to use this, and it makes a heck of a mess, but I'm assuming it'll work well and keep the bugs away. Fingers crossed." Read more

10 customers mention7 positive3 negative

Customers like the color of the stain. Some say it leaves a nice brown color, while others say it turns the wood nice and green. The resulting color is a very dark green, but waterproof and fungus proof. The product looks good on old wood and fresh wood.

"...This was easy to apply, definitely turned the wood green to indicate it’s been applied (which was great since our inspector was a little special)...." Read more

"...Once it sat for a couple weeks, it looks great!" Read more

"...it does discolor the wood to an Irish greenish tint that I expect will fade over time. much better than allowing the cut ends to go untreated...." Read more

"...The product looks good on old wood, a nice brown. On fresh wood, green. I expect the wood to last outdoors after the treatment...." Read more

5 customers mention5 positive0 negative

Customers are satisfied with the protection provided by the stain. They mention that it provides an extra layer of protection for cut ends of treated wood, and extends the life of ropes and nets. They also say it prevents rot.

"...suppliers use and while not pressure applied, it is an extra layer of protection...." Read more

"This stuff will protect cuts on trees and p.t. lumber...." Read more

"...And this protects it from rot.." Read more

"...I commercial fish and great to soak ropes,nets ect: protects extends life with 0 marine growth.Highly recomend" Read more

29 customers mention9 positive20 negative

Customers are mixed about the smell of the household stain remover. Some mention that the strong odor is temporary, while others say that it has a strong, stinking odor.

"...The odor is very, VERY strong, (again great because our inspector was a bit special) but that is the nature of the product..." Read more

"I didn’t notice that it had a overpowering odor. I used it outside and didn’t stick my nose in the container or on the treated area...." Read more

"...It smells horrible so I can't imagine anything alive ever wanting to chew on my joists!..." Read more

"Yes it smells some but I didn't find it sickening or, overpowering though unpleasant. I was outdoors with a light breeze though...." Read more

14 customers mention9 positive5 negative

Customers are mixed about the quality of the stain. Some mention it's an excellent wood treatment that works great to preserve wood, while others say that it stains everything and has a peculiar odor.

"This product is well absorbed by wood and has more copper than other products...." Read more

"This is effective as a wood preservative but should never, never be used inside a dwelling or closed building...." Read more

"...where ever else this might go as an undesired place as it is a permanent stain." Read more

"Easy to apply and highly effective wood treatment. Much higher copper content than other options at a similar price making it a great value." Read more

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Shawn L.

Worked great!

Reviewed in the United States on May 2, 2021

Verified Purchase

Exactly what we needed, Copper Naphthenate is hard to come by in my area (Phoenix metropolitan area) but it’s required by code for new construction and additions. This was easy to apply, definitely turned the wood green to indicate it’s been applied (which was great since our inspector was a little special). The odor is very, VERY strong, (again great because our inspector was a bit special) but that is the nature of the product (It reminds me of a permanent marker) with that being said, the strong odor is temporary. It will diminish as it sets into wood. We were/are doing an addition to our house and the odor carried into the main house for maybe 3 days. Its been a week now, no drywall or insulation yet, and the smell has completely diminished. I’m so glad I could find it in Amazon, because it was nowhere to be found in the Phoenix area.

12 people found this helpful

Helpful

Easy to apply, works well

Reviewed in the United States on October 5, 2023

Verified Purchase

Used Tenino 2% a number of years ago for additional protection with 4x4 fence posts, and the posts have held up much better than the non-treated ones. Bought this again last month for use on the non-treated posts I'm now replacing after 8 years (the treated posts are still going strong). This also comes in an 8% solution, although not here, that I have used on farm posts in the distant past.

I see reviews mentioning the smell - it doesn't seem that strong or offensive to me. Just wear latex gloves while applying this. If you read the MSDS, the solution is largely mineral spirits with the copper naphthenate.

4 people found this helpful

Helpful

Mike L

Smells horrible but soaks in nicely

Reviewed in the United States on August 2, 2023

Verified Purchase

After having to replace some dock joists after just 12 years, I decided to step up my game this time around. I saw a builder using this stuff on YT and they said it's required by code in some places on end cuts. I've been using a paint brush to apply it on each cut and was surprised at how much the wood soaks it up. It smells horrible so I can't imagine anything alive ever wanting to chew on my joists! I can't speak for durability but it is a similar chemical to what the OEM lumber suppliers use and while not pressure applied, it is an extra layer of protection. Hopefully my joists will outlast me and the next person can worry about it decades from now!

6 people found this helpful

Helpful

J. Miller

Well, it depends...

Reviewed in the United States on November 10, 2019

Verified Purchase

Yes it smells some but I didn't find it sickening or, overpowering though unpleasant. I was outdoors with a light breeze though. Application is a breeze to, seems to penetrate well on the side of soft pine and, of course, the end grain soaks it way up really quickly. I can't speak to effectiveness or, longevity yet but, if it really does contain the ingredients listed on the lable, at those concentrations, I'm sure it'll be fine.

CON: But even though the APPLICATION INSTRUCTIONS say you can paint over it with oil base paints and, you can, what it doesn't say is none will stick to it very well. I tried 3 different types of oil base primer (leading brands) after 4 days set time before the first attempt - in warm sunny weather, low humidity - and none stuck to it very well. You could "scoop" it off with your finger nail after 24 to 48 hrs. And the last one was an expensive above the waterline boat primer.

I ended up sanding it with 80 grit after getting back down to bare wood (way to easily. ) The sandpaper would clog up as I went along though. Then attacked it with chemicals. I suspected the reason was -speculation- that like other types of these products from the past it contains some type of paraffin, or other waxy substance, that will dissolve in petroleum distillates used as the carrier compound for the active ingredients. Not a bad idea at all, provides a great moisture barrier, just like lead based primers of old. But this felt a little to waxy to me so I tried things that worked when I had to remove color crayon from things we never wanted colored to begin with. The last one that really fixed it was some diluted household ammonia. I tried all the primers again (and I'm talking quarts here thank goodness) in sections and they all stuck much better and with much shorter dry time. This is not scientific, just empirical observation. And, maybe there is some oil base that will just work on top of it. But for sure I would test on some scrap or a small area before committing a whole project to it if you want to paint over it afterwards.

27 people found this helpful

Helpful

Mary

Does the job!

Reviewed in the United States on January 26, 2024

Verified Purchase

Does a good job. Negative not returnable, watch the fine print of Prime!

Helpful

Tabitha Concepcion

Excellent wood treatment

Reviewed in the United States on January 2, 2024

Verified Purchase

Using for a floating deck - brushing over where wood blocks were cut on the ends or where nail holes / screw holes
Use outside - odor is strong but wood soaks this stuff in - seems to almost immediately repel water
Time will tell but good stuff. Purchased 2 of these so far

4 people found this helpful

Helpful

Michael

Stains Everything!

Reviewed in the United States on December 7, 2022

Verified Purchase

For protecting our posts this is the only choice that I would recommend for ground contact as this is a very easy product to use and well absorbed into the wood. These chemicals do have a smell and needs to be used in plenty of free air. Also plenty of protection is a must for both yourself and the floor, walls, and where ever else this might go as an undesired place as it is a permanent stain.

4 people found this helpful

Helpful

R Martin

Simple to apply

Reviewed in the United States on August 15, 2023

Verified Purchase

I treated regular posts for ground contact by rolling several coats on the wood with special attention to heavy application to cut ends. The product is thin and covered a lot of surface. I cannot yet rate performance of the product on installed posts. Some reviewers commented on the strong odor. This is definitely not a product to use inside your home, not even an unfinished basement. While the odor is strong, I did not find it particularly offensive. To be safe I suggest using the product in a detached garage, carport or an outdoor area under cover, if you can. I did notice the odor dissipated after a few weeks.

3 people found this helpful

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Copper Naphthenate 17% (2% as Metal) - 1 Gallon - Wood Preservative

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