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Internet #305627244

Model #340229

16 oz. Wood Hardener (4 Pack)

  • 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
  • See More Details

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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

Info & Guides

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Specifications

Dimensions

Container Size
16 Ounce
Product Depth (in.)
6.625
Product Height (in.)
7.625
Product Width (in.)
6.625 in

Details

Base Material
Oil Based
Color Family
Clear
Color/Finish
Clear
Dry to touch (min.)
120
Features
No Additional Features,No Additional Features
Interior Paint & Stains Product Type
Wood Filler
Interior/Exterior
Interior
Kit
No
Pack Size
4
Paint Tool Product Type
Patching and Repair Product
Paint/Stain Clean Up
Mineral Spirits
Patching & Repair Product Type
Wood Restoration
Primer required
No
Product Weight (lb.)
1
Returnable
90-Day
Transparency
Clear

Warranty / Certifications

Manufacturer Warranty
Satisfaction guaranteed for full refund of purchase price

Questions & Answers

31Questions28Answers

I'm making tables with some reclaimed pine boards. I was planning to use a conditioner (oil) on t...

Asked by DepotDog June 6, 2021
1
Answer

Glad to lend a hand. Rust-Oleum Varathane Wood Hardener can be used along with the Rust-Oleum Varathane Wood Conditioner and Varathane Wood Stain. Since the wood species can affect the final color and finish, we do recommend applying to a test area first to ensure it is the color you are looking for. - Rust-Oleum Product Support 5

Is this toxic to people, like on raised garden beds?

Asked by Fanny April 18, 2021
1
Answer

Thank you for reaching out, Fanny. Rust-Oleum Varathane Wood Hardener is not recommended for use on surfaces with direct food contact, or for areas submerged in water or soil. - Rust-Oleum Product Support 4

Will this harden poplar wood for use in furniture making?

Asked by john March 6, 2021
2
Answers

Hi John, thank you for reaching out! Our Varathane Wood Hardener is designed to penetrate porous wood fibers that have been damaged by rot or decay. A softer wood may allow the hardener to penetrate the surface a bit, but this treatment would not make the entire board more dense for furniture making. - Rust-Oleum Product Support 2

can it be used went the wood is still a little wet

Asked by Charles January 7, 2021
4
Answers

Charles, I always let the wood dry as much as possible. I have not tried it on soaking wet wood, but when I used it on the tops of my fence posts, I can only assume they were not totally dry. Hope that helps!

What is the material, other than acetone, in the hardener?

Asked by Dusty October 29, 2020
2
Answers

They are listed on the label.

I am re-glazing windows and it says to paint with an oil based paint before I start glazing them....

Asked by Rebecca October 20, 2020
3
Answers

Good question, Rebecca. Rust-Oleum Varathane Wood Hardener is designed to penetrate into the wood to prevent rot and decay. It is not a film-forming product and therefore would not be a suitable substitute under glaze. - Rust-Oleum Product Support 5

I want to pour it into a container to dip my paintbrush into. what materials are safe to use as a...

Asked by Rebecca October 19, 2020
4
Answers

Glass.

Can I apply this in below 60 f temperature?

Asked by Neko October 6, 2020
2
Answers

Had no conditions, with temp at 40.

What is the shelf life of the can once opened?

Asked by Jeff September 27, 2020
3
Answers

Hi Jeff, the shelf life of our Varathane Wood Hardener is 5 years from the date of manufacture. We recommend storing the can with the lid tightly sealed to ensure it remains usable for this time period. - Rust-Oleum Product Support 2

Is this for interior use only?

Asked by john August 4, 2020
6
Answers

No, I used it to strengthen the edge of a door frame.

16 oz. Wood Hardener (4 Pack) - page 2

Customer Reviews

  • 4.3
    out of 180 reviews
  • 83% recommend this product
Filter by:
Showing 1-10 of 180 reviews
It hardens wood
It hardens wood
by Bob
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 Vince
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 Rustoleum
3 people found this helpful
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 David
13 people found this helpful
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 Tom
2 people found this helpful
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 Steve
9 people found this helpful
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
Worked for what we needed it to do.
Worked for what we needed it to do.
by Gypsy
Works as described. Good stuff....
Works as described. Good stuff.
by JOHN
Unable to find 1/8” temperboard (hard both sides) I used...
Unable to find 1/8” temperboard (hard both sides) I used this on masonite to get rid of fuzzy edges and somewhat harden the product. It was a compromise, but better than just using the masonite as it comes.
by DrDLH
A rather odd product, but quickly puts on a tough protective covering!
A rather odd product, but quickly puts on a tough protective covering!
by Ted
Showing 1-10 of 180 reviews