- Repairs wood rot or wood decay on interior or exterior wood
- Stop wood rot, binds wood fiber to repair and fill wood damage
- Easy to apply, dries in 2 hours - sand, stain or paint after use
- View More Details
How to Get It
Product Overview
Varathane 16 oz. Wood Hardener restores and revitalizes wood damage including wood rot or wood decay. Penetrates into wood surfaces and strengthens and reinforces old wood fibers. Use to fix and repair interior or exterior wood surfaces with rotting wood or decaying wood including wood furniture, wood floors, wood doors, wood decks or trim.
- Apply to interior or exterior wood surfaces to restore, fix or repair wood rot and wood decay
- Works on all wood surfaces including wood furniture, wood floors, wood decks, cabinets, trim, doors and more
- Clear liquid penetrates and binds with wood fibers to fix and repair wood damage
- Durable formula resists shrinkage over time
- Remove wood decay and crumbles to reach sound wood, apply using disposable bristle brush
- Apply several coats to area quickly until surface becomes shiny
- Allow 2 to 4 hours of dry time
- Cleans up with acetone
- Can sand, paint or stain if desired
- Online price includes PaintCare fee in the following states: CA, CO, CT, DC, ME, MN, OR, RI, VT, WA
- California residents
Compare Similar Wood Floor Fillers
 |  | Best Seller |  | |
| Brand | DAP | Varathane | 3M | DAP |
| Name | Plastic Wood-X with DryDex 32 oz. All-Purpose Wood Filler | 16 oz. Wood Hardener | Bondo 12 fl. oz. Wood Filler | Premium Wood Filler 16 oz. White (4-Pack) |
| Price | $1728 | $1898 | $1998 | $3592 |
| Ratings | (1549) | (241) | (647) | (339) |
| Container Size | 1 Quart | 16 Ounce | 12 Ounce | 16 Ounce |
| Interior/Exterior | Exterior,Interior | Interior | Exterior | Exterior,Interior |
| Wood Restoration Product Type | Wood Filler | Wood Hardener | Wood Filler | Wood Filler |
| Paint Tool Product Type | Wood Filler | Patching and Repair Product | Patching and Repair Product | Patching and Repair Product |
| Paint/Stain Clean Up | Soap & Water | Mineral Spirits | Lacquer Thinner | Water |
| Base Material | Latex | Oil Based | Acrylic | Latex |
| Pack Size | 1 | 1 | 1 | 4 |
| View Product | View Product | View Product | View Product |
Specifications
Dimensions
| Container Size | 16 Ounce | Product Depth (in.) | 6.625 in |
|---|---|---|---|
| Product Height (in.) | 7.625 in | Product Width (in.) | 6.625 in |
Details
| Base Material | Oil Based | Color Family | Clear |
|---|---|---|---|
| Color/Finish | Clear | Dry to touch (min.) | 120 min |
| Features | No Additional Features | Interior Paint & Stains Product Type | Wood Filler |
| Interior/Exterior | Interior | Kit | No |
| Pack Size | 1 | Paint Tool Product Type | Patching and Repair Product |
| Paint/Stain Clean Up | Mineral Spirits | Primer required | No |
| Product Weight (lb.) | 1 lb | Transparency | Clear |
| Wood Restoration Product Type | Wood Hardener |
Warranty / Certifications
| Manufacturer Warranty | Satisfaction guaranteed for full refund of purchase price |
|---|
Questions & Answers
Typical questions asked about products:
- Is the product durable?
- Is the product easy to use?
- What are the dimensions of the product?
Customer Reviews
Apr 1, 2021
It hardens wood
It hardens wood
by
Jul 3, 2020
Very thin. Dissolves adjacent paint job.
I painted the bottom of my chimney chase. It soaked into the wood good, but it softened and dissolved the other good paint on the board. So I had to scrape it (the good paint) off and repaint it. It's clear and thin, and looks just like pure acetone, but it does have some hardener in it. When it dries, it's like varnish or something. It's so thin, it drips from the brush and painting overhead is virtually impossible. I had to sacrifice a spray bottle with this stuff. And it ruined that bottle of course. I painted the bottom of my garage doors, and again it ruined the adjacent paint job. Maybe if you are extremely careful you can get just the bad wood. Lastly, it quickly and completely dissolved the whole bottom of the red solo cup i was using for touchup, and spilled contents on my driveway. It was clear and didn't think much about it, but it dried a pale white, so now i have a 1' diameter white spot on my concrete driveway. You have to dig out all the old wood before painting. I think this stuff is maybe one step up from just replacing the whole wood section. It has drawbacks, and is hard to apply. I would probably do myself a favor and dispose of the remaining can. It was $13 at Home Depot. You have to pour it into another container to use it, as the spout is only 1" diameter.
by
Response from Rust-OleumSupportJul 7, 2020
Thank you for your feedback, Vince! Rust-Oleum Varathane Wood Hardener needs to be applied with a disposable bristle brush and we do not recommend it for use on previously painted sound wood surfaces. You also want to ensure that all safety and application instructions are followed on the label for the best results.
- Rust-Oleum Product Support 3
- Rust-Oleum Product Support 3
Jul 10, 2019
Better than expected, so far at least. It actually made soft, spongy wood quite solid. I was skep...
Better than expected, so far at least. It actually made soft, spongy wood quite solid. I was skeptical, because the instructions said to remove all the "decayed and soft wood." And if you do that, what's the point? If the wood were not "decayed and soft," I wouldn't need a wood hardener. Still, I thought it was worth a try, since the alternative would have involved replacing a section of flooring.
I removed the parts that were rotten to the point of really disintegrating and hoped that somehow it would work on the remaining semi-rotten wood. It did. The wood soaked it up and, after it dried, I applied a second coat and it got even harder. Then I filled a few large gaps in the wood with Bondo for Wood and, at least so far, it seems to be a very solid surface. If your area is hidden, or if you're willing to paint afterwards, this might work.
by
Mar 2, 2019
I use this to strengthen wood I am repairing on furniture I am refurbishing, and in my woodworkin...
I use this to strengthen wood I am repairing on furniture I am refurbishing, and in my woodworking. This is a chalice I made and the maple wood I used needed to be filled/strengthened as I turned it.
by
Jan 23, 2019
I purchased this product to treat a spalted maple hollow form bowl that I turned on a lathe. Spal...
I purchased this product to treat a spalted maple hollow form bowl that I turned on a lathe. Spalted wood has very interesting color and pattern but since spalting is the beginning of rot, it is much softer than wood not spalted. This product allowed me to sand and finish to a nice shine. It definitely met my expectations.
by
Aug 11, 2022
Works great,Works great,
Works great, seems expensive
by
Aug 11, 2022
I am using this to harden blocks of wood before...
I am using this to harden blocks of wood before I turn them on the lathe works out pretty well.
by
Aug 4, 2022
Great stuff to harden up wood. I used it on...
Great stuff to harden up wood. I used it on end grain of an exposed wood member that was deteriorating. It bound the wood fibers together and was able to paint with no further issues 10 yrs later. I will admit, I kept applying and soaking the end piece the best I could and it did the job perfectly!
by
Aug 4, 2022
by
Jul 28, 2022
by
Related Products
Explore More on homedepot.com
Doors & Windows
More Products
Outdoor Living
Shop by Collection
