Best Outdoor Wood Sealers in 2021 – Review and Guide For Buyers

Welcome to our review of the best outdoor wood sealers. Before we get into our top products below, first let’s discuss why you might want an outdoor wood sealer in the first place.

Best Outdoor Wood Sealers – Introduction

Outdoor wooden furniture is beautiful and timeless. It can bring an outdoor environment to life, and makes spending time in your garden or patio enjoyable and comfortable.

However, all wood ages and cracks with time. Wood is also susceptible to infestations by insects that can bore or tunnel through it, reducing it’s stability. Finally, wood can also easily grow mold or become weak with excess moisture due to rain or fog.

All these things could easily shorten the lifespan of your beautiful wooden furniture. However, there is an easy solution to these problems – outdoor wood sealers.

Outdoor wood sealers come in a range of different products, all with one very important purpose – to extend the lifespan of your wooden furniture. These sealers are designed to repel moisture, discourage pests, and protect against harmful UV rays that can discolor or damage the wood.

All in all, investing in a high quality wood sealer is imperative if you want to enjoy your wooden outdoor furniture for years to come.

But with the sheer volume of sealers available to purchase, which one is right for you? Well, you’ve come to the right place to find out!

Below we have reviewed the pros and cons of our top 10 best outdoor wood sealers, so that you can find the perfect sealer for your furniture. Let’s get to it!

best outdoor wood sealers

The 10 Best Outdoor Wood Sealers Are:

S. no. Top Outdoor Wood Sealer Product Link
1 Thompson’s Advanced Natural Wood Protector Buy Now
2 Thompsons Water Seal Wood Protector Buy Now
3 Rainguard Sealer Buy Now
4 Agra Life Lumber – Seal Buy Now
5 Minwax Helsman Spar Urethane Buy Now
6 Star Brite Golden Teak Oil Sealer Buy Now
7 Ready Seal Exterior Wood Stain and Sealer Buy Now
8 Bona Classic Seal Buy Now
9 Agra Life TriCoPolymer Cedar Seal Buy Now
10 EcoProCote Acri – Soy Penetrating Sealer Buy Now

Thompson’s Advanced Natural Wood Protector

thompsons advanced waterseal wood protector

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Thompson’s Advanced Natural Wood Protector is a wood sealer that has been specifically created for outdoor use. This sealer will increase the life of any wood it’s applied to for up to 2 years.

This sealer will also protect the wood from any stains and give it a great finishing look.

The best thing about this product is that you only need to apply a single coat of it. With only one single coat, it even converts the look of an old, tarnished wood, and makes it appear like new.

This sealer can also help prevent any further rotting or decay of wood that is already damaged, as well as shield out UV rays and dust.

Pros Cons
  • Only one coat is sufficient for wood
  • Coverage lasts for at least two years
  • Mildew resistant and protects from UV rays of the sun
  • Long-lasting waterproofing and beading
  • Low VOC, little to no odor during application
  • Not for interior use

Thompsons Water Seal Wood Protector

thompsons outdoor wood sealer

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Thompsons Water Seal Wood Protector is best known for its protection of wood against water.

It provides a three-way protection from external elements and is ideal for outdoor wood.

It’s durability, which provides long-lasting results, makes it one of the best choices for your wood.

Though it is a bit thick, it is also fluid and smooth at the same time because of its rich formula. Due to its smooth and fluid texture, it can be applied very smoothly with brush, or with roller.

Most importantly, it dries much faster than other sealers.

This sealer penetrates deep into the holes of the wood, no matter what it’s texture or condition. It also allows staining and painting with oil-based products.

Pros Cons
  • Provides three forms of protection against external elements
  • Features a rich and smooth formula
  • Dries quickly
  • Somewhat greasy and oily

Rainguard Sealer

rainguard outdoor wood waterproof sealer

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This Rainguard Sealer is a non–toxic and completely eco–friendly wood sealer that protects the wood without causing any harm to pets or plants.

It is best for outdoor woods as it protects the wood from humidity and rain.

Not only this, but this sealer also protects the wood from any kind of weather conditions, including extreme temperatures, and sunlight.

For all these reasons, this product is in great demand, and one of our top outdoor wood sealers.

You also only need to apply one layer for this sealer to prolong the life of your wood for up to 5 years under standard conditions.

For an even stronger protective layer, you can apply multiple coats.

Pros Cons
  • It is completely eco – friendly
  • Has a non – toxic formula
  • Repels water and humidity
  • Not affected by freezing temperatures, weathering, dirt, sunlight or windy rain
  • Somewhat thin
  • May require the application of several coats

Agra Life Lumber – Seal

lumber seal outdoor wood sealer

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This is one of the best sealers for outdoor wood as it creates a plastic layer coating over the wood, while being non–toxic and eco–friendly at the same time.

This product is also free from VOCs (Volatile Organic Compounds).

The best part is that it is very easy to apply.

It can be used for outdoor furniture like dog or a birdhousees, but it is not appropriate for wooden platforms that are for walking on as it can make the surface slippery.

This sealer works greatly with water–based stains or paint.

It’s perfect chemical formula resists rain, sun, decay, insects, mold, mildew, etc. Furthermore, it lasts three times longer than most other traditional sealants.

Pros Cons
  • Can be used on the interior/exterior of the home
  • Lasts three times longer than most other traditional sealants
  • Can be used during ‘one – side up’ phase to seal to protect studs and plywood from water damage
  • Protects against rain, decay, sun, mold & mildew and insects
  • Plastic coating is very thick and slippery;  not good for use on walking wood
  • Can discolor/darken over time if not applied correctly
  • Thick coating can get sticky over time

Minwax Helsman Spar Urethane

helmsman minwax water based urethane

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This Minwax Helsman Spar Urethane is a water-based sealer that is ideal for both indoor and outdoor wood.

It protects the outdoor wood from sunlight, rain, moisture, humidity, and other weather conditions.

This sealer has UV blocker chemicals that protect the wood from harmful rays of the sun and preserves the natural texture and color of the wood.

It’s clear finish is appropriate for lightly textured wood.

In addition, this sealer is great for lightly textured wood, and is it easy to clean it with warm water.

Pros Cons
  • Ideal for both indoor and outdoor wood
  • Resist rain, moisture, humidity and any other weather condition
  • Protects from UV rays of the sun
  • Dries faster and earlier
  • Resist fading and graying of wood
  • A bit expensive
  • May turns yellowish after some time

Star Brite Golden Teak Oil Sealer

starbrite teak oil wood sealer

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The Star Brite Golden Teak Oil Sealer is known for it’s ability to repel water, and hence is mostly used for marine teak or other types of fine woods.

This sealer is ideal for outdoor woods as it protects the wood from rain or harsh weather conditions.

It acts as a wood-preserver and maintains the natural look of the wood.

The wood needs to be cleaned properly before applying this sealer, to ensure that it is absorbed properly by the wood after application.

This sealer’s natural oils and its high molecular polymers shield the wood from extreme weather conditions.

It also protects the wood from any graying and fading caused by exposure to sun, and its UV rays.

Its polymers give a warm golden tinge to the wood that makes it look natural and long-lasting. It also dries fast, and is easy to apply.

Pros Cons
  • Resists water, rain, harsh weather
  • Ideal for outdoor woods
  • Resists UV rays of sun
  • Dries fast
  • It make wood look natural
  • The woods needs to be clean before applying the sealer
  • It is a bit expensive

Ready Seal Exterior Wood Stain and Sealer

ready seal wood exterior stain and sealer

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The Ready Seal Exterior Wood Stain and Sealer is an oil-based stain which is semi–transparent.

It is one of the top sealers for outdoor wood as it maintains the natural look of the wood.

It is a waterproof sealer that prevents any mold or mildew from growing and damaging the wood. The sealer also protects the wood from the harmful UV rays of the sun.

It can be applied easily without leaving any bristle marks from your brush.

Most importantly, this sealer is available in nine different shades. This makes it perfect for enhancing the look of any kind of wood, as you will always be able to find the perfect shade for the effect you’re after.

Pros Cons
  • It is a oil-based sealer
  • Maintains the natural look of wood
  • Available in 9 different shades
  • Resist water and harmful UV rays of the sun
  • Prevents from mold and mildew
  • In comparison to others, it has low coverage

Saver Systems Wood Stain

saver system wood stain

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The Saver Systems Wood Stain is a water-based semi-transparent wood stain.

It reaches inside the pores of the wood and forms a protective layer.

Not only does this sealer protect the wood from water and rain, but it also prevents the wood from harmful UV rays of sunlight.

It functions both as a stain and as a sealer, so the wood will always look rich, natural and bright after application.

This sealer has a very low VOC (Volatile Organic Compound) rating.

It also comes in 4 different shades such as natural, light walnut, dark walnut, and cedar.

Last but not least, this sealer has almost no odor, which means it is easy to use. It also means you don’t need to wait for the smell to go away after application before enjoying your furniture.

Pros Cons
  • It gives natural finish to the wood
  • It is a water-based wood sealer
  • Resists water and harmful UV rays of the sun
  • Available in 4 different shades
  • Has very low odor
  • Has very low coverage

Tall Earth Eco-Safe Wood Treatment

tall earth wood sealer

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The Tall Earth Eco-Safe Wood Treatment is a non–toxic sealer that is suitable for outdoor woods.

It does not harm kids or pets. The best thing about this sealer is that you don’t have to do much preparation at all to the wood before applying it.

Also, generally just one coat of this sealer is enough to protect it.

This sealer prevents your wood from moss, fungus, and mold. It also resists wet or dry rot.

There are no VOCs (Volatile Organic Compounds) contained in this product. It can also be used for both indoor and outdoor applications.

Pros Cons
  • Non – toxic sealer
  • Resist moss, mold and fungus
  • Used both for indoor and outdoor woods
  • Needs only a coat of it on wood
  • Dries quickly
  • It has no VOC ( Volatile Organic Compound )
  • It might darken the wood a bit
  • You need to mix it before applying

Bona Classical Seal

bona classic outdoor wood sealer

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Bona Classical Seal is a water-based sealer. It protects wood from heavy rain-fall, fog and mist, along with any other kind of wear and tear caused by external elements.

This sealer is made up of semi-gloss formula, and can be applied easily at home.

Only a single coat of the Bona classical Seal is sufficient to protect most wood.

This non-toxic wood sealer dries very quickly. Not only this, but it does not turn yellow and never darkens, keeping your wood looking fresh and natural for it’s lifetime.

This sealer has a odorless formula that makes it easy to use even in indoors.

Pros Cons
  • Water-based sealer
  • Prevents wood from water and heavy rainfall
  • Resist any kind of wear and tear
  • Non – toxic
  • Odorless formula
  • None

Agra Life TriCoPolymer Cedar – Seal

agri life outdoor cedar sealer

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Agra Life TriCoPolymer Cedar Seal is specifically made to increase the shelf life of wood, in particular cedar wood.

This sealer prevents the wood from heavy rainfall or water, and makes it look natural and of high quality.

This sealer also protects the wood from any kind of cracking or splitting due to external elements.

It gives a satin finish and can help restore the color of greying wood, be it cedar or any other kind of wood.

The best thing about this product is that it is water-based sealer which is completely eco–friendly and non–toxic, meaning that kids, pets and birds can be around the treated wood without any risk.

Also, this sealer is odorless which makes it more pleasant to work with.

Pros Cons
  • It is water-based sealer
  • Protects wood from water and heavy rainfall
  • Resists cracking, splitting and graying of the wood
  • It is eco-friendly and non – toxic
  • Has no VOC ( Volatile Organic Compound )
  • It is odorless
  • Easy to apply
  • For outdoor use only
  • Fades faster than other products


EcoProCote Acri-Soy Penetrating Sealer

acri soy penetrating wood sealer

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This EcoProCote Acri–Soy Penetrating Sealer can be used for both indoor and outdoor woods. This sealer is natural, odorless and non–toxic.

It is also made out of 100 % natural oils rather than harsh chemicals.

It does a great job at sealing and protecting the wood it’s applied to.

It dries quickly, within approximately 30–60 minutes, and never peels or flakes off. It is easy to use as it does not need sanding.

You can use this product to seal cement as well as wood, making it a great choice for a home DIY project involving both materials.

Pros Cons
  • Made up of 100 % natural oils
  • It is non – toxic
  • Dries quickly
  • Never peels or flakes off
  • Can be applied to cement and wood
  • Easy to use
  • Does not need sanding before applying it
  • Can change the colors of wood

Best Outdoor Wood Sealers – Conclusion

We hope this article about the best outdoor wood sealers has helped bring some clarity on the right sealer for you! You can’t really go wrong with any of the sealers mentioned above – it just comes down to the conditions that the wood will be under, and any particular finish or aesthetic that you’re after.

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