Wood is beautiful and a great building block for so many things, from homes to decks, furniture, and even toys. Left unfinished, its beautiful markings stand out, but when stained, finished and sealed, they’re even more evident.
However, as strong as wood is, it is fibrous which means it wears down over time. That’s exactly why you need the best sealer. Thompson’s WaterSeal Advanced is my top 1 pick which ensures that the project you’re working on maintains its integrity for a long time.
Thankfully, there are some fantastic sealant options out there. Below, I’ve reviewed top 12 wood sealers on the market to help you choose which one is right for you.
Thompson’s WaterSeal is a trusted brand. Its Advanced Natural Wood Protector provides the strongest protection against harm conditions for your outdoor decks and wooden projects. Thompson’s guarantees satisfaction.
Best Wood Sealers in December, 2019
|Wood sealer||Covers (quart)||Dry time (minutes)||Sheen|
|75 sq ft||120||satin|
|2||Thompsons WaterSeal Wood Protector|
|100 sq ft||60||satin|
|3||Rainguard Sealer||up to 50 sq ft||60||satin|
|4||Agra Life Lumber-Seal ||up to 150 sq ft||30||satin|
|5||Rust-Oleum Zinsser Sealcoat||100-150 sq ft||30-60||satin|
|6||Waterlox Original||125 sq ft||120||satin|
|7||Anchorseal 2||up to 100 sq ft||60||matte|
|8||Rust-Oleum Zinsser Shellac||75 sq ft||45||satin|
|9||Bona ClassicSeal||125-150 sq ft||120-180||satin|
|10||Agra Life Clear Cedar||up to 200 sq ft||45||satin|
|11||DeckWise Ipe Seal||500 sq ft||60-120||satin|
|12||Acri-Soy Sealer||up to 150 sq ft||30-60||matte|
1. Thompson’s Advanced Natural Wood Protector – Top Deck Sealer for Pressure Treated Wood
Thompson’s WaterSeal Advanced is strictly for outdoor use and is one of the greatest products on the market to finish your pressure treated decks, outdoor furniture, shutters and fences! If you have a deck, you know that the upkeep can be frustrating. If you choose a low-grade finisher, you’ll likely have to sand, stain and finish your deck each year. However, WaterSeal’s maximum-strength formula will protect your deck for at least two years! Plus, there’s more good news-you need only apply one coat. This sealer can also renew the look of wood that has weathered over time or was not properly treated. With one coat, old, grey wood on your deck can look like you just had it installed.
The water-based formula is easy to apply and easy to clean; if you see a mess, just clean it with soap and water. It also resists mildew and protects against harmful UV rays while protecting the integrity and the natural beauty of the wood. Your satisfaction is guaranteed by Thompson’s, which is one of the most trusted, reputable brands for outdoor water sealing in the nation.
2. Thompsons WaterSeal VOC Wood Protector – Great Surface Compatibility for Decks and Fences
Designed to protect and insulate large wooden surfaces, this product by Thompsons Water Seal penetrates deep into the wood to prevent water contact. More than that, it provides a three-way protection that helps maintain exterior wood in perfect shape.
Due to its formula, this wood sealer can be applied to wooden surfaces of various different types. Made with high-quality ingredients and extensively tested, the Thompsons Water Seal VOC Wood Protector produces durable and long-lasting results.
A Consistent Formula
Without a doubt, the Thompsons Wood Protector features a remarkable rich formula. Despite its thickness, the product is surprisingly fluid, smooth and consistent. What’s more, it has a creamy quality that speaks to the quality of its ingredients.
Deep Wood Penetration
Apart from making it rich and smooth, this sealer’s formula allows it to penetrate the pores and accidents that make up the surface of a piece of wood. No matter its texture, condition or level of porosity, the penetration is deep and thorough, resulting in total insulation.
Because it’s capable of penetrating a piece of wood deeply no matter its texture, condition or level of porosity, this wood sealer can be used in a variety of wooden structures and pieces of furniture, even if the wood is weathered, painted or stained. Furthermore, it allows painting and staining with oil-based products.
As was previously mentioned, the Thompsons offers three separate levels of protection. By penetrating the pores of the wood, it provides protection against wood rot and mildew. Of course, by creating a hard protective layer, it also waterproofs the surface of the wood to prevent warps, cracks, shrinkage or splitting from moisture.
With everything on the table, it’s easy to concede that this sealer is an effective and efficient product. Providing triple protection, it can help maintain and conserve external wooden structures for years. Additionally, despite being slightly greasy and oily, its formula is rich and sumptuous, and it penetrates even hardest and most porous woods with ease.
3. Rainguard Concentrate Premium Wood Sealer – Best Eco-Friendly Wood Sealer
Featuring a proprietary formula that is non-toxic and eco-friendly, this product by Rainguard insulates and protects wooden structures without causing harm to people, pets or plants. Additionally, with impressive coverage capabilities, it is perfect for large outdoor jobs.
A Proprietary Formula
The Rainguard Concentrate Premium Wood Sealer has a proprietary formula that is unique in various ways. First of all, it’s completely eco-friendly and non-toxic, ensuring that it will not hurt people, pets or plants. As a result, this product can be used on wood planters in vegetable gardens as successfully as it would be used inside a home.
Apart from being eco-friendly, this product’s formula features a blend of silanes and siloxanes that creates an incredible resistance to water and other external elements. What is more, its implementation of a unique ingredient called micro-lok creates a powerful barrier that helps maintain the structural integrity of wood under difficult conditions.
Apart from mentioning its toughness, it should be noted that the barrier created by this product is completely hydrophobic. As a result, it repels water, preventing potential problems such as wood rot, mildew and other problems caused by excessive humidity. As a result, this product is particularly effective when it comes to protecting outdoor wood structures against rain.
Apart from being effective, consistent and remarkably easier to apply, this product by Rainguard provides long-lasting results. As a matter of fact, one application of this product lasts as much as five years in perfect condition. After that, you can simply apply a new coating of this wood sealer to renew its protective capabilities.
Largely, the longevity of this product has to do with its proprietary formula. Apart from using a blend of silanes and siloxanes that provides toughness and solidity, this formula features various ingredients that ensure that external elements will not pass the barrier it creates.
All in all, it can be said that the Rainguard Concentrate Premium Wood Sealer is a product worth taking into consideration. Its well-balanced formula is effective and efficient, and its protective capabilities are remarkable. Additionally, its proprietary formula is eco-friendly.
4. Agra-Life TriCoPolymer Lumber Seal – Great Outdoor/Indoor Clear Wood Sealer
The original tricopolymer exterior wood sealant, this product’s reputation speaks for itself. This sealant provides a plastic-like coating, yet is non-toxic, eco-friendly and VOC (volatile organic compound) free. The product is incredibly easy to apply, and you could even have your children help you. There are no toxic fumes, and Lumber Seal is also pet-friendly.
You can use it on your birdhouses, your dog houses and fencing for livestock. You can use this sealer outside, in fact, it claims to add years of life to wood siding, fence posts, and shingle siding. However, it would not be a good choice for a deck as the thick, glossy finish would be very slippery when wet.
When applied to plywood in new construction, Lumber Seal evens out the drying rate of the wood, which can prevent warping. It works with most water-based stains and paints and would be a wonderful solution to use to seal your garden trellis, gazebo, Adirondack chair or fences.
5. Rust-Oleum Zinsser Bulls Eye Seal Coat – Top Interior Sealer For Wooden Floors
Rust-Oleum is a brand known for its ability to preserve things, so it should come as no surprise that the brand’s sealant is one of the best on the market. It works with all clear wood finishes, plus, it’s also one of the cheapest sealants out there! One can of Bulls Eye Seal Coat treats 400-600 square feet. The shellac formula is wax-free and is incredibly fast-drying.
You can paint on a coat of sealant, sand it down, and paint on another coat in just minutes! It really magnifies the beautiful look of the wood that you’re working with and over time it will not darken your project or yellow with age. This lightweight formula helps you get your projects done much more quickly than a wax-based product.
6. Waterlox Original Sealer/Finish – Great Choice For Indoor Use
This indoor sealant has been providing a beautiful finish to wood since 1910, and the formula is so good, it hasn’t changed since then! Waterlox’s Original Sealer/Finish super-premium finish that is handmade from Tung oil. Tung oil is made from the nut of the Tung tree. As it dries, it hardens and gives the wood a rich, wet look. The formula dries and seals the surface, penetrating into its pores and waterproofing it.
You can use 2-3 coats of this sealant to finish your project, or it can be used before using a satin or high gloss finisher; it is truly the most versatile product that Waterlox offers. It produces a medium-sheen with a 75-degree gloss level once it dries. That will fade a bit over time, to about a 55-degree gloss.
One thing that makes this product unique is your ability to use it on other hard services like brick, limestone, linoleum or event cement to ensure that it doesn’t degrade over time.
7. Anchorseal 2 Green Wood Sealer – Ideal Against End Grain Checking
Anchorseal’s sealer has been used by professionals for decades. It is most widely known to protect wood against end grain checking. End grain checking is the term given to the splinters that you see at the end of wood planks that most often happens right after the wood is cut.
Keep in mind that as long as your piece of wood has some kind of end grain on it you can use this sealer. I’ve been using this sealer on all of my green wood blanks for about a year now and I definitely like it. Anchorseal does reduce cracking by quite a bit: the sealer really cuts down on checking, it actually decreases cracking by 90%. The quality is really good and it’s totally worth it.
Anchorseal is the top choice for most contractors when it comes to fixing end grain checking; after applying 2-3 coats, you will likely never have to worry about the splintering of that piece of wood again! It is most effective when applied right after the cut is made into the wood-hence the name “Green Wood Sealer.”
How Anchorseal works
To put it as simple as possible it is just a mixture of water and wax. As the sealer dries the water evaporates leaving a nice solid wax film over the end grain. It’s very simple to apply – just take the sealer and brush it to the end grain.
This product is almost wax-like when dried, so it is not made for sealing all kinds of projects. For example, you’d apply it to the end of the wood on your newly constructed deck, but you wouldn’t use it to stain the entire thing.
So Anchorseal is a great solution to protect your wood against end grain checking. I’ve never had any problems with it.
8. Rust-Oleum Zinsser Bulls Eye Amber Shellac – Good Choice for Wood Trim and Furniture
If you’re looking for a rich, almost antique-like finish to your wood project, Rust-Oleum’s Amber Shellac is the perfect sealer for you. Unlike clear sealants, this will add an amber hue to the surface it is applied to; when you think of the traditional finish that you see in many homes on cabinets, floors, and furniture, this is the color that you’re thinking of.
It’s great on projects, as the Shellac texture is smooth but not slippery. It is also important to note that this shellac should only be used on indoor wood projects; if used outdoors it will easily fade.
If you mess up, or the color looks too dark, you can easily sand off the shellac and start over again. Plus, if you accidentally make a mess, the amber shellac is easily cleaned with ammonia and water.
The shellac adds a beautiful depth and richness to the wood. It is not a high-gloss finish but does a great job of protecting your project from water damage and wear and tear. It is best used on indoor projects (even those that are high traffic!) like wood paneling and trim, a kitchen table and chairs or the railing on your stairway.
9. Bona ClassicSeal – Great Hardwood Floor Sealant
Bona’s ClassicSeal is a waterborne sealer that is intended for use on indoor hardwood floors. It highlights the beauty of your wood, protects it from water damage and wear and tear, and prevents any stain that was applied from bleeding. This is a semi-gloss formula that can be applied on its own or before applying another Bona product like BonaTraffic or BonaMega.
You might only need one coat to finish the job, and experts recommend that you don’t paint the formula on but instead use a weighted rod or handheld applicator pad. You can do more layers if you feel like you need more protection, for example, in your kitchen, hallway or other high-traffic areas.
Originally, this product was called BonaSeal and was created to be a product to seal the wood before finishing it with another Bona product, which is why they recommend that you use another one of their products after. This sealer is non-toxic after it dries, goes on easily, has little to no order and dries quickly and clearly. It will not yellow or darken the stain or look of the surface that it is layered on.
10. Agra Life TriCoPolymer Cedar-Seal – Great Product to Treat Cedar
Agra Life’s CedarSeal is specially formulated to increase the lifetime of cedar and other woods with a higher oil content that are primarily used in projects kept outside. This sealant will not only waterproof wood but will enhance the beautiful pattern of its grain and maintain it for years of continued use. It will also keep the wood from cracking or splitting.
It dries completely clear with a satin finish and can even restore cedar and other woods that have turned gray with age. However, keep in mind, that cedar naturally starts graying over time, so you will likely have to sand down and reapply in the future. CedarSeal does also increase the strength of the wood by allowing excess moisture to gradually evaporate out.
It is so safe it can even be used as a sealant in food storage bins and in pet shelters. You might also use this product as a sealant for cedar shingles on your home, on a raised vegetable bed, fences, trellises, gazebos and pergolas, patios and more.
11. Deckwise Ipe Seal Hardwood End Grain Sealer – Nice Waterproof Product to Protect Exotic Hardwoods
If you’re not yet familiar, Ipe, like Tigerwood, Cumaru, and others, is what experts call an “exotic” hardwood. Ipe comes from a flowering tree that grows in Central and South America. Ipe Seal is a wax emulsion sealer that is highly recommended by professionals to treat and finish Ipe wood. It is known to be one of the best protectants for the end cuts of decks. It also will prevent splintering and end checking in the ends of wood that has just been freshly cut.
In fact, Ipe Seal is most effective when applied to wood within 24 hours of it being cut. To be completely clear, this seal should not be used on any surfaces that you walk on, it should only be used on end cuts and the face grain of carvings. Exotic hardwoods are especially prone to breaking and cracking at the ends as they dry out, and the damage happens quickly; usually within the first hours after it is cut.
This sealer can be used on things like knives or knobs that are made of exotic types of woods or thermally treated one, though. It is paraffin based, not water based, so it looks cloudy when applied but dries clear. It creates a flexible protective coat that is waterproof.
12. EcoProCote Acri-Soy Penetrating Sealer – Good Choice Both for Exterior and Interior Use
Unlike many other sealants, the EcoProCote Acri-Soy Sealer can be used both inside and out! That’s because it is all natural, non-toxic, is odorless and made 100% from plant oils instead of harsh chemicals. It’s also unique because it can be used to seal both wood and cement. The natural formula seals pores, strengthening the wood or cement, making it impenetrable to water. It also doesn’t disintegrate or flake off over time.
The natural oil acts like a sap when applied to wood, restoring and strengthening it. When applied to cement, it blocks the buildup of a filmy layer of salt that breaks it down. When you eventually need to apply a new coat, you simply need to clean the area and apply Acri-Soy; no sanding or refinishing is needed! It is so easy to use.
Wood sealant is painted on once your project is complete. Typically, it is applied after stain, but raw wood can be sealed for a more natural look. Sealant is used on wood (stained or unstained) to “seal” its pores and make it more solid. Sealing the pores prevents moisture from getting into the wood, which would eventually make it rot.
When used on stained wood, sealant prevents the stain from bleeding. If you’ve been considering staining your project prior to sealing then you will find stains article helpful.
Also, sealer can be used over the oiled wood. Oil requires some maintenance so you can use a sealer to escape the periodical reapplication of the oil. Furthermore, a sealer will give additional protection to the oiled surface. Check out oils for wood if you want to prevent your project from drying or give it a natural-looking shine.
Why you need a sealant
Regardless of what type of wood you’re using it on, sealant makes it smooth and can prevent scratches. It also lowers the risk of getting splinters, making your project much safer!
If you’re making something out of wood that will primarily stay outdoors, it is incredibly important that you seal it with a good sealant. It cannot be painted on top of wood that is dusty or dirty. Plus, if the wood is in the rain or sun, the sealant will break down over time, causing it to eventually warp or rot.
A piece of raw wood by itself is strong and fibrous and durable enough to work for many projects but unfortunately deteriorates quickly over time, especially when kept outdoors or when used or touched frequently. The point of a sealant is to absorb into the pores, fill them and harden them so that they cannot fill up with water, and so that the hardened plastic makes the wood stronger than it even is in its natural state. This is most often done with a resin, wax, water or oil-based formula. Which works best for your project will depend on what environment it will live in and how it is applied.
Questions to ask before purchase
While this is far from an exhaustive list, it gives great options for every kind of project you might have. Before buying, think about the needs you have for your project because the sealant you buy needs to be specific to your situation.
- Do you need to seal wood and another surface? Do you want to buy one product to work on both?
- Will the wood be stored indoors or outdoors?
- Do you want to add color to your project?
- What part needs to be sealed (surface or ends?)
- Do you need to protect it against mildew or UV rays, everyday spills or heavy traffic?
- What kind of finish do you prefer? Glossy, matte or silky?
- Do you expect to need to reapply it each year?
Write down the needs you have and compare them to the list above. That will help you determine which sealant is appropriate for your project. With a large number of products out on the market these days, you can almost always find a solution that meets all your needs without having to buy multiple cans of sealant. Whether you need a hard plastic coating or just a layer to keep out extra moisture, finishing your wood project with a sealant will ensure that it can be safely used and enjoyed for many years.