Rust-Oleum 1904A Wolman (Woodlife) CopperCoat Green Wood Preservative-Below Ground, Quart

I used Woodlife wood preservative on leftover construction wood to build a garden gate. After applying it, I lightly sanded the wood and sealed it with three coats of spar urethane, sanding between each.Woodlife acts as a crucial first defense against moisture-related mold and pests, but it doesn’t seal wood from water damage—an additional topcoat is necessary. It’s great for outdoor wood or any wood exposed to fluctuating temperatures and humidity, including house beams (though not for food-contact surfaces).For easy application, I used a spray bottle and let it dry overnight. The clear version dried invisibly. A year later, my gate remains strong, mold-free, and pest-free, despite a design flaw: I didn't shape the wood scraps used in it's construction and they're blocky pieces with perfect flat sides—the top was flat, which caused water to pool. Over time, this wore down the sealant, but Woodlife prevented rot or infestation. I have time to address the issue.The attached pictures show the year-old finished gate as the woodlife had dried, when the gate was installed (nighttime picture), and now (daytime picture). Hope this helps!

Went on well

I recently had to do a forced remodel of a bathroom thanks to an undetected water leak. When I went to pull the walls apart, I found that the original studs had been coated with copper green, brand unknown. Now since there is not a building contractor in the world that goes above and beyond to do anything more than exactly what is required by contract, i'm supposing that the copper napthenate that the original builders painted on was due to local building codes. So, wanting to stay in compliance and build the rooms back exactly as they were in their original state, I ordered the Woodlife Copper Green to coat the new studs.The product is very thin, goes on with a blackish-blue tint, and is best applied with a two-inch brush. It takes some practice with the brush to get the right amount so that you are not flinging it all over the place and wasting product. Once you have mastered applying the correct amount, it quickly soaks into the wood, and is dry within a few hours. However, it is not completely cured for several days. That being said, during the cure, the stuff will turn green. It will also emit quite noxious fumes. It smells exactly like an auto repair shop, just a bit stronger. Have a fan handy and open the windows for several days.I can't speak for the efficacy of this product. Upon inspection of the original studs that were also coated with copper napthenate, they had rot in them as well, just not as badly as the untreated floor. I honestly don't see where this product adds value or protection, because if your floor has rotted out, you may as well replace your walls as well. Even if the studs have not rotted, they have probably been in the house long enough they have become brittle and will split as soon as you rehang your wall board. Best thing is just to root out all of the wood that has been touched by water and replace it.One small container of Copper Green will coat about 16 studs.

I always find products like this hard to review. The intent is to keep wood from rotting so the ultimate review would be many years down the road and the treated material is still in great condition. That being said, I rebuilt my deck recently. It was 30 years old. Deck boards were rotting. Surprisingly there was no rot on the above ground framing that was rated for ground contact. The ring shank nails pulled through the decking during demo. I needed to grind all of them off. My concern was water infiltration into the top of the framing members from all the nails that remained. I treated the tops of the framing members with coppercoat prior to covering with tape. I also treated all the cut ends of new treated lumber used for revised stairs. This stuff must be good because it smells so bad. Ease of use lost stars because of the PPE requirements. I will definitely use the product in the future on other projects.

Great product

This wood preservative was recommended years back by a company that sells porch swings in New Orleans. If it's good enough for New Orleans weather, it's good enough for me. It's done a great job preserving that swing and any other wooden outdoor furniture for us. There's very little change in the wood color and your can apply stain over it. Highly recommend.

Great for inground wood fence post to slow down rot.

I have NOT used, opened or exposed myself to this hazardous product! PPE items are required such as a respirator that blocks hazardous vapors. The use of this item causes harmful & possible deadly results just from the vapors. The precautions were not available when I reviewed this product for purchase. The fault is all mine for not doing complete research. I do not want to keep spending money for such a hazardous product.