Best Wood Hardeners

5 Best Wood Hardeners Reviews with Buying Guide

Wood must be maintained meticulously to retain its pristine appeal. While wood is the first choice for many different purposes, unfortunately it rots away rather easily.
Once it starts rotting, it’s difficult to reverse the damage if you don’t know what to do. Wood hardeners are a solution to this problem, and are widely used.

Wood hardeners are chemicals that repair rotting wood by strengthening it from the inside. The best wood hardener will make wood last longer and will toughen it.
Picking the right hardener is essential, and with so many brands out there, it’s a pretty daunting task. But we are here to guide you! Here, you will find all the information that you would need to make your pick.

Best 5 Wood Hardeners Reviews Below

Now that we have the technicalities out of the way, let us start off with the product reviews. We are checking out the top 5 wood hardeners out there, along with their pros and cons. Read on to find out which one suits your needs.

1. Minwax 41700000 High-Performance Wood Hardener, pint

One of the best hardeners out there, Minmax delivers on its promise of taking high-quality care of your woodwork.

The core reason why woodwork decays or disintegrates is due to moisture seeping into the wood fibers. However, this particular hardener seals the wood and blocks off moisture penetration. And in the process, allowing the wood to become tough.

This hardener contains a special resin composition that joins the decaying wood fibers together and prevents it from further rotting. In the process, this allows the wood to rebind and, essentially, become stronger.

One key aspect of this product is its versatility. It can be used on a wide range and variety of wooden products and surfaces. Be it furniture, desktops, shelves, boards or stands, you can be certain that this hardener will have you covered.

It comes in a suitable volume of 1 pint. This is actually more than enough for your weekly needs. What’s more is that the hardener is devoid of color. Hence, your wooden product will not be colored on, neither will it lose its appeal.

Special Features
  • Made of special fiber reinforced resin
  • Penetrates decaying wood and binds it
  • Locks out moisture
  • Can be used on different wooden surfaces
  • Colorless

Buy at Amazon


2. J-B Weld 40001 Wood Restore Liquid Hardener – 16 oz

J-B Weld brings you the ultimate liquid hardening formula suitable for your everyday needs. A no-mix solution, it will save your time and effort, and the end result will be beyond excellent.

This liquid formula is ideal for treating rotting or decaying wood. It has tremendous moisture sealing and blockage properties, thereby, stopping the decay process completely.

Because of its advanced formula, it dries off rather quickly and this is very important when you are dealing with wet wooden surfaces. You would want quick action to minimize the damage from moisture.

It is highly versatile in application and use. You can easily use it on a variety of surfaces including window sills, posts, frames and even antique wooden products. One key aspect of this product is that it solidifies the wood to make it more receptive to fillers, in case you need extra strength.

Finally, it is widely endorsed by a range of professional carpenters and mechanics for its high-quality fixes and applicability. Hence, this is a product worth investing in.

Special Features
  • Total moisture elimination
  • Solidifies wood for further strengthening
  • Quick-drying
  • Ready-made formula-no mixing needed
  • Highly versatile in use
  • Used by the professionals

Buy at Amazon


3. PC Products PC-Petrifier Water-Based Wood Hardener, 16oz, Milky White 164440, 16-Ounce

One of the most common ways that wood and wooden products are destroyed is by the constant attack of insects and pests such as woodworms. To get rid of this problem, PC products bring to you their premium quality water based-wood hardener.

You can apply this particular hardener in a variety of ways, such as spraying, painting or even injecting. This is what makes it so handy, not to mention that the product does not have to be mixed and comes prepared.

Once applied, it will seep into the wood via pores, and work its magic by reversing the damage caused by insects. It will harden the wood and make it tougher than before. So that means the wood does not have to be reinforced.

It arrives at your doorstep fully prepared and mixed, so you do not have to waste time working out proportions and ratios to mix it and then apply it. Simply unpack and use it!

Furthermore, it is perfect for splinters and can be used on windows sills, both outdoors and indoors, as well as window frames, roofs and furniture.

Special Features
  • Specially made to repair damage by insects
  • Can be applied in different ways
  • Toughens the wood
  • No need to mix
  • Applicable on a wide range of surfaces

Buy at Amazon


4. ELMER’S Rotted Wood Stabilizer 16 Oz (E760Q)

A renowned and trusted name for adhesives and sealants, Elmer’s rotted wood stabilizer is what you need to ensure your wooden products last long and retain their pristine look.

This product is easy to apply and it acts fast. It effectively seals and hardens the wood from the inside out, preventing moisture from seeping into the fibers and dampening the wood.

With one coating, it can repair the damage that would otherwise have been irreversible. You can use it on a wide range of surfaces, such as window frames and sills, shelves, furniture, doors, and much more.

Because it dries up fast, you can paint over it rather quickly and do not have to wait too long for it to take the desired effect. It is also odorless, so you won’t have to put up with unpleasant smells.

If you are worried that this product will stain your dark-colored floor or frame, then worry not. After being applied, it leaves nothing more than a barely noticeable surface finish. You can carefully wipe this off after you are done with hardening the wood.

Special Features
  • Odorless
  • Has wood hardening properties
  • Dries quickly
  • Will not stain dark-colored surfaces
  • Suitable for a multitude of surfaces and products

Buy at Amazon


5. LiquidWood 2 Pint Kit, Parts A & B

A two-part epoxy resin solution, LiquidWood is the product you need for your structural repairs.

The two parts (A and B) are the two components of the hardener. They are to be mixed in a 50/50 proportion and applied directly to the wooden surface.

When applied, it will act to repair the damaged or rotten wood and further strengthen it, so that it is more long-lasting and stronger than before.

Once used, it provides good reception to wood fillers, binding the wood together and preventing it from breaking down again. This makes it compatible with wood fillers.

It is also highly suitable for both indoors and outdoors, so that means you can use it on wooden surfaces ranging from bookshelves to window frames and doors.

One key feature of this product is that it is odor-free and non-toxic. While most wood hardeners are highly toxic to human health, this hardener does not pose that danger, making it environmentally friendly as well.

Special Features
  • Repairs rotten and damaged wood
  • Is compatible with fillers
  • Suitable for indoor and outdoor use
  • Non-toxic

Buy at Amazon


Does Wood Hardener Stop Rot?

To put it simply-yes. Wood hardeners stop and even prevent rot from happening again. They also prolong the life of wood and wooden products.

Wood is made of small, microscopic fibers. Rotting happens when these fibers become weak, due to the growth of fungi and dampening from moisture.

The hardener brings back the strength of these weakened fibers. When applied, they seep deep inside the wood through pores or small, microscopic channels, and act on the fibers when they come into contact with them. They make the fiber stronger and make the wood harder again.

How Do You Use A Wood Hardener?

Using a wood hardener is easy and does not take much time at all. All you have to do is follow a few key steps to make your wood rot free again!

● Step 1: Identify and Clean the Wood

First and foremost, identify which pieces you need to repair and apply hardener on. Make sure to clean the targeted piece gently to remove any grease or oils, by scraping away slowly.

● Step 2: Apply Hardener

Apply the hardener slowly at first, by pouring it on to the surface. Use a paintbrush to smoothly spread out the hardener on the region.

● Step 3: Add More If Needed and Let It Dry

Add extra layers of hardener using the paintbrush, for greater strength. Stop when you feel that no more is needed. Simply let it dry for 3-4 hours after that.

● Step 4: Add Finishing Touches

After the hardener has dried out, you may paint or sand the wood piece as required.

Factors to Be Considered While Choosing the Best Wood Hardener

Choosing a wood hardener is an important task as the wrong hardener will not be of much benefit. To help you out, we have provided some pointers that you can keep in mind when picking out the best hardener for your wood.

● Versatility

Most wood hardeners can be used on a variety of surfaces, such as doors, frames, windows etc. However, some are made for specific surfaces, such as softwood or hardwood on floors.

A multipurpose hardener is always a better option, as you will get a number of features in one package. Whether a hardener is multipurpose or not, it will usually be stated by the manufacturer on the container label. Make sure to read that carefully.

● Insect Repelling Properties

Not all wood hardeners are insect repelling. If you are looking to harden the wood and get rid of insects, get an insect-repelling hardener, not a general-purpose one.

● Stain-free and Colorless

In cases where you are working on colored surfaces (such as a dark floor or door), then go for colorless hardeners. The hardener will not stain the wooden surface, so there will be no need to paint over it.

● Odorless

Most hardeners give off a certain smell once they are applied. This smell will usually disappear completely in a matter of hours or a day. If you are sensitive to smells, go for an odorless hardener as this will not give off any noticeable smell.

Frequently Asked Questions

No doubt you have questions on your mind right now. That’s fine, and it’s a good thing too. This section deals with the most common questions you might have and answers them briefly.

1. My hardener contains resins. What does this mean?

Simply put, a resin is a substance that reinforces the adhesive property of the hardener. The resin makes the hardener bond very strongly, so it can’t be taken off easily.
Resins are a crucial component of hardeners and are beneficial for it as well.

2. What precautions must I take when applying hardeners to wooden surfaces?

Hardeners are made of toxic chemicals which can cause harm to human health. Hence, always wear gloves and a mask when handling hardeners. Goggles can also be worn to protect the eyes, but that’s up to you.

3. Are all hardeners toxic? What if I want to buy non-toxic ones?

No, not all hardeners are toxic. New hardeners are being made that are non-toxic and odorless too. If you are looking specifically for non-toxic hardeners, contact your hardware store.

However, hardeners still retain some harmful properties and should never be ingested.

4. How long does it take for wood hardener to dry?

Usually around 3-4 hours, depending on the composition and brand. Some may take around 5-6 hours as well, but most dry up fast.

5. Can I spray paint over the wooden product after applying hardeners?

Yes, you can. You can spray paint over the product using whatever color you desire. Hardeners will not impede or obstruct the paint in any way.


That’s all for wood hardeners, for now at least. With so much to discuss, we only dealt with the key points and details to help you pick the best one. So, take care of your wooden products and we will be back with more reviews soon!