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Best Wood Sealer For Decks (2024 Updated)

If you’re looking for a way to protect your deck from the elements, then a wood sealer is a must-have. Not only does it provide a protective layer against the sun, rain, and snow, but it can also help prevent the growth of mildew and mold. However, before purchasing a wood sealer for your deck, there are a few factors to consider.

First of all, you need to consider the type of wood your deck is made of. Some sealers are better suited for softer woods such as cedar, while others are designed for harder woods such as redwood or teak. It’s important to choose the right sealer for your specific type of wood to ensure maximum protection.

Another factor to consider is the level of protection you need. Some sealers offer basic protection against the elements, while others provide enhanced UV protection, waterproofing, and mildew resistance. You’ll need to determine your specific needs and choose a product accordingly.

Finally, you should also consider the application process. Some sealers require multiple coats, while others can be applied in one easy step. The type of applicator you use can also make a difference, with some products requiring a brush, roller, or spray application.

So if you’re looking for a way to protect your deck and make it last longer, a wood sealer is definitely worth considering. But before you make a purchase, make sure to consider factors such as the type of wood, the level of protection needed, and the application process. Need help choosing the right sealer for your deck? Keep reading to learn more. What type of wood is your deck made of? Do you live in a rainy, sunny or humid location? How important is mildew resistance to you? With these questions in mind, you’ll be able to choose the right sealer for your needs.

10 Best Wood Sealer For Decks

# Product Image Product Name Product Notes Check Price
1
The product is ideal for sealing and protecting wood from water damage, rot, and decay.
2
This product is ideal for applying deck cleaners, transparent stains, and sealers onto steel decks.
3
The product is ideal for protecting outdoor wood from water, UV rays, and serving as a stain and sealer.
4
Ideal for waterproofing and sealing wood surfaces such as decks, fences, and outdoor furniture.
5
Ideal for protecting and staining exterior wood surfaces, such as decks, fences, and outdoor furniture.
6
Ideal for waterproofing and sealing wood surfaces, providing long-lasting protection against water damage, mold, and mildew.
7
This product is perfect for outdoor furniture, fences, decks, and cedar garden beds as a protective and finishing oil sealer.
8
This product is ideal for protecting outdoor wood from water and UV rays, specifically for siding, fence, and deck staining/sealing.
9
This product is ideal for protecting and waterproofing all types of wood with a lifetime core protection.
10
Ideal for sealing and repairing wood surfaces, such as decks or fences.
The product is ideal for sealing and protecting wood from water damage, rot, and decay.
This product is ideal for applying deck cleaners, transparent stains, and sealers onto steel decks.
The product is ideal for protecting outdoor wood from water, UV rays, and serving as a stain and sealer.
Ideal for waterproofing and sealing wood surfaces such as decks, fences, and outdoor furniture.
Ideal for protecting and staining exterior wood surfaces, such as decks, fences, and outdoor furniture.
Ideal for waterproofing and sealing wood surfaces, providing long-lasting protection against water damage, mold, and mildew.
This product is perfect for outdoor furniture, fences, decks, and cedar garden beds as a protective and finishing oil sealer.
This product is ideal for protecting outdoor wood from water and UV rays, specifically for siding, fence, and deck staining/sealing.
This product is ideal for protecting and waterproofing all types of wood with a lifetime core protection.

1. Garden-Seal 5 Gallon Non-Toxic Wood Sealant

This product boasts a non-toxic formula, making it safe for use in a variety of settings. It contains no VOCs, ensuring that it releases no harmful fumes or gases during application. The formula is also easy to apply, making it a convenient choice for DIY projects or professional use. Cleanup is a breeze, thanks to the water-based formula that washes off easily with soap and water.

Whether you're using it in a farm setting or other outdoor environment, this product is a reliable and safe choice. Its non-toxic formula won't harm plants or animals, so you can apply it with confidence. Plus, it's suitable for use on a wide range of surfaces, making it a versatile addition to any toolbox.

Pros

  • Non-toxic formula
  • No VOCs
  • Easy to apply
  • Easy cleanup
  • Safe for use in farm settings
  • Suitable for use on a variety of surfaces

2. Tri-Poxy Deck Sprayer – 2 Gal

The 2-Gallon Tri-Poxy tank is a durable and reliable option for all your spraying needs. It features a 4-inch wide funnel mouth opening which makes filling and cleaning easy and hassle-free. This tank is compatible with various deck cleaners, sealers and transparent stains, making it a versatile option for all your outdoor cleaning and maintenance tasks.

This tank comes with 3 poly fan nozzles that provide fine, medium and coarse spray patterns, ensuring that you get the right coverage and finish for every job. The poly shut-off with reinforced hose ensures a steady and consistent flow of liquid, while the ergonomic handle makes pumping and carrying easy and comfortable.

Whether you're a professional cleaner or a DIY enthusiast, this 2-Gallon Tri-Poxy tank is a great investment for all your spraying needs. It's built to last and offers a range of features that make it easy and convenient to use.

Pros

  • Durable 2-Gallon Tri-Poxy tank
  • 4-inch wide funnel mouth opening for easy filling and cleaning
  • 3 poly fan nozzles for fine, medium and coarse spray pattern
  • Poly shut-off with reinforced hose
  • Ergonomic handle for easy pumping and carrying

3. Sienna Wood Shield – Outdoor Stain Protector

Storm Protector is a high-quality semi-transparent stain and sealer that penetrates deep into the wood to enhance its natural beauty while providing protection from the elements. It is specially designed for exterior wood surfaces such as decks, fences, and sidings. This stain and sealer is a great choice for those who want to protect their wood surfaces from water damage, UV rays, and fading.

This exterior wood stain and sealer can be applied to a variety of wood substrates, including redwood, cedar, pine, douglas fir, spruce, cypress, mahogany, and pressure-treated lumber. Its versatile formula ensures excellent adhesion and long-lasting protection.

One of the biggest advantages of Storm Protector is its ease of use. It comes in a ready-to-use formula that can be applied with a brush, roller, or sprayer. Simply mix it thoroughly and apply it to a prepared wood surface. The stain dries quickly and can be recoated in just a few hours.

Storm Protector offers a variety of finishes, from clear to solid color stains, that not only protect the wood but also enhance its natural beauty. Whether you want to highlight the wood's grain or give it a more dramatic look, Storm Protector has got you covered.

Pros

  • Provides superior waterproofing and UV protection
  • Enhances the natural beauty of wood while protecting it from Mother Nature
  • Can be applied to a variety of wood substrates
  • Easy to apply with a brush, roller, or sprayer
  • Quick-drying formula that can be recoated in just a few hours
  • Offers a variety of finishes to suit your preference

4. Marine Wood Sealant & Stain – 1 Gal.

Marine Sealant is a liquid formula that offers excellent UV-stable coating for protection against the elements, saltwater spray, and water damage. This sealant is perfect for outdoor furniture, thermally modified wood, and boat docks. It is safe for use over open water and non-hazardous to aquatic life.

Deck Stain is an ultra-low VOC, water-based paint that enhances the extended life of your flooring, siding, and porch. The paint forms a water-resistant shield around wood fibers at the cellular level, preserving the natural color and protecting against water damage.

Waterproof Wood Sealer is a sealer, stain remover, and finish all in one, specifically crafted for wood used on boat docks, decks, and retaining walls near rivers, lakes, oceans, and ponds. This formula offers complete protection against constant moisture.

Wood Sealant is a fast-drying protector that penetrates wood below the surface, coating the wood fibers at the cellular level, creating a long-lasting, flexible, breathable barrier. It is easy to clean with soap and water.

Seal-Once is a user-friendly wood sealer and stain that effectively protects your lumber or concrete against water damage. Its products do not harm pets, plants, or people, providing satisfaction to its users.

Pros

  • Marine Sealant offers excellent UV-stable coating for protection against the elements, saltwater spray, and water damage.
  • Deck Stain forms a water-resistant shield around wood fibers at the cellular level, preserving the natural color and protecting against water damage.
  • Waterproof Wood Sealer provides complete protection against constant moisture.
  • Wood Sealant creates a long-lasting, flexible, breathable barrier and is easy to clean with soap and water.
  • Seal-Once is user-friendly and does not harm pets, plants, or people.

5. Ready Seal 512 5-Gallon Pail Natural Cedar Exterior Stain And Sealer For Wood

The Ready Seal is an easy-to-use wood stain that requires no primer and is ideal for sprayers, rollers or brushes. It is important to note that it should not be applied over painted or newly stained surfaces as sealed surfaces inhibit penetration, and it will reach its true color in approximately 14 days. With no back-brushing required, the product will blend itself and can be applied in any temperature range for proper application. It does not require diluting or thinning prior to spray applications. The product is easy to maintain as it does not require sanding or stripping for re-application. Its 'goof-proof' application ensures no laps, runs, or streaks. The product is unavailable in California and is subject to or will include a PaintCare recycling fee in the following states: CT, VT, OR.

The Ready Seal is a versatile product that can be used on all types of exterior wood, including decks, fences, gazebos, and outdoor furniture. Its unique formula ensures that it does not leave any runs, laps or streaks, making the application process quick and easy. The product requires no wet-line application and will blend itself, providing a consistent finish every time. It is suitable for use in any temperature range and does not require any diluting or thinning prior to use. The product can be applied using a sprayer, roller, or brush, making it ideal for both DIY and professional use.

The Ready Seal is a reliable and efficient product that provides long-lasting protection to exterior wood surfaces. Its easy maintenance process ensures that the product stays looking new for longer, and its 'goof-proof' application process makes it ideal for use by anyone. With no back-brushing required, the product is quick and easy to apply, providing a consistent finish every time. The product is subject to or will include a PaintCare recycling fee in the following states: CT, VT, OR. Overall, the Ready Seal is an excellent choice for anyone looking for a reliable, easy-to-use wood stain that provides long-lasting protection to exterior wood surfaces.

Pros

  • Easy maintenance process
  • Versatile product that can be used on all types of exterior wood
  • Does not leave any runs, laps or streaks
  • Can be applied using a sprayer, roller, or brush
  • Provides long-lasting protection to exterior wood surfaces

Cons

  • – Unavailable in California
  • – Subject to or will include a PaintCare recycling fee in the following states: CT, VT, OR

6. Nano+poly Premium Wood Sealer – Waterproof & Clear

The Water-Based Polyurethane Wood Finish is a top-quality sealant that offers excellent protection against wear and tear in high traffic areas. It is odorless and perfect for use on various wooden surfaces such as wood siding, log homes, swing sets, outdoor furniture, wooden decks, fences, and more. Unlike other sealers that only form a topcoat, this protector penetrates beneath the surface to create a long-lasting, water-resistant shield around the wood. It is a highly effective and durable solution that is ideal for both residential and commercial use.

The Floor Sealer Applicator is an ultra-low VOC premium gloss that enhances the longevity of your exterior flooring. It is a user-friendly sealant that can be safely applied around your home, landscaping, vegetation, or over any water area. This fast-drying liquid creates a flexible, breathable barrier that provides a no-fuss, easy clean-up with soap and water, as it allows the wood to grey naturally. It is an ideal solution for those looking for a UV-stable coating option that is both effective and easy to use.

Seal-Once is a user-friendly wood sealer and stain that is an effective way to protect your lumber or concrete against water damage. Our products are designed to be safe for pets, plants, and people, so you can enjoy peace of mind knowing that you are not harming the environment or your loved ones. The waterproof sealer is a great alternative to oil-based sealers and creates a flexible, breathable barrier that is both effective and easy to clean. It is perfect for both residential and commercial use and is ideal for those looking for a long-lasting and durable solution.

Pros

  • Provides top-notch protection against wear and tear in high traffic areas
  • Creates a long-lasting, water-resistant shield around the wood
  • Ultra-low VOC premium gloss is perfect for enhancing the extended life of your exterior flooring
  • Fast-drying liquid creates a flexible, breathable barrier and provides a no-fuss, easy clean-up with soap and water
  • User-friendly wood sealers and stains are an effective way to protect your lumber or concrete against water damage
  • Our products are safe for pets, plants, and people

7. Real Milk Paint Outdoor Defense Oil & Sealer.

The Outdoor Defense Oil is an excellent solution for finishing and reviving wooden surfaces. It is ideal for use as a protective seal on exterior woods, including shutters, unfinished furniture, raised garden beds, decking, and picnic tables. The oil is made with 100% pure Tung Oil, Pine Oil, and zinc, which provide a warm glowing finish and UV protection. The natural ingredients make it safe for use on garden beds containing edible plants. The wood finish sealant is a penetrating oil that can be used on wood, concrete, stone, or any absorbent material. It enhances the natural wood grain finish and creates a matte finish that penetrates deep into the wood grain. With 3-5 coats, it provides moderate protection. This wood oil is also ideal for finishing adirondack chairs, log pine furniture, decks, fencing, concrete patios, or wooden storage sheds. You can even use it over Milk Paint to prevent fading or flaking.

The Outdoor Defense Oil is a versatile and easy-to-use product that can help protect and enhance your outdoor wooden surfaces. It is an excellent solution for anyone looking for a natural and safe wood finish sealant that can be used on a variety of materials.

Pros

  • Made with 100% pure Tung Oil, Pine Oil, and zinc.
  • Provides a warm glowing finish and UV protection.
  • Safe for use on garden beds containing edible plants.
  • Penetrates deep into the wood grain and creates a matte finish.
  • Can be used on wood, concrete, stone, or any absorbent material.
  • Ideal for finishing adirondack chairs, log pine furniture, decks, fencing, concrete patios, or wooden storage sheds.
  • Can be used over Milk Paint to prevent fading or flaking.

8. Wood Shield: Ultimate Outdoor Stain Protection

Protect and enhance the natural beauty of exterior wood surfaces with Storm Protector. This semi-transparent stain and sealer provides superior waterproofing and UV protection to prevent color fading caused by Mother Nature. Whether it's siding, decks, fences, or any other exterior wood substrate, Storm Protector can be applied to a variety of wood types, including redwood, cedar, pine, douglas fir, spruce, cypress, mahogany, and pressure-treated lumber.

Storm Protector features a ready-to-use formula that's easy to apply. Simply mix thoroughly and apply to a prepared wood surface with a brush, roller, or sprayer. It comes in a 5-gallon container, making it convenient for larger projects.

With Storm Stain, you can choose from a range of finishes, from clear to more dramatic solid colors, all of which provide protection against harsh weather conditions. Get the look you want while ensuring your exterior wood surfaces are well-protected.

Pros

  • Provides superior waterproofing and UV protection
  • Can be applied to a variety of exterior wood substrates
  • Easy to apply with a brush, roller, or sprayer
  • Comes in a 5-gallon container for convenience
  • Offers a range of finishes to choose from

9. Eco-Seal Wood Protector For Life!

The Lifetime Wood Protection is a highly effective solution for those who want to protect their wooden items from the harmful effects of UV rays, water, and other natural factors. Using plant-based oils and UV blockers, this product penetrates deep into the wood fibers, bonding with them to provide extreme protection. With this product, you no longer have to worry about constantly replacing rotted deck boards.

This product seals, waterproofs, and protects a wide variety of wooden items, including exotic wood, bamboo, IPE pressure-treated wood, and everything in between. It also protects green wood and all types of wood from cupping, curling, cracking, and end grain checking and splitting. You can find this product in a clear total wood stain, as well as cedar, walnut, and stone stains on Amazon.

The Lifetime Wood Protection is a professional-grade product that contains no mineral oils, cedar oil, or petroleum oils. It offers incredible coverage, with the ability to cover up to 400 square feet, which is 50% more than other wood sealers or stains. This product is ideal for use on teak furniture, wood decks, docks, and any other wood surfaces where you want non-toxic protection.

Pros

  • Plant-based oils and UV blockers deeply penetrate and bond with wood fibers for extreme protection
  • Protects against UV rays, water, and natural factors, reducing the need for constant replacement of rotted deck boards
  • Seals, waterproofs, and protects a wide range of wooden items, including exotic wood, bamboo, and pressure-treated wood
  • Protects against cupping, curling, cracking, and end grain checking and splitting
  • Available in clear total wood stain, cedar, walnut, and stone stains on Amazon
  • Professional-grade product that contains no mineral oils, cedar oil, or petroleum oils
  • Offers incredible coverage, with the ability to cover up to 400 square feet, 50% more than other wood sealers or stains
  • Ideal for use on teak furniture, wood decks, docks, and other wood surfaces where non-toxic protection is desired

10. Seal-Once Premium End Sealer – Liquid Wood Repair – Deck Sealer Applicator – 1 Gallon In Clear

Protect your outdoor wood from the elements and deterioration with this premium wood sealer. It's specifically recommended for cut ends of soft and hardwood lumber, including Cedar, Ipe, Mahogany, Cumaru, Bamboo, Redwood, Brazilian Cherry, and more. This sealer creates a flexible, breathable barrier that stabilizes freshly cut deck boards from warping. It's available in a clear [SIZE] and can be applied damp on wet. The water-based gloss of this sealer is ultra-low VOC and easy to apply, making it the perfect protection for your deck, railings, and steps. It's also odorless and fast-drying, making it a user-safe choice for your DIY projects. You can easily clean it up with soap and water, allowing you to tackle more than one project at a time. With Seal-Once, you can protect your wood and concrete against water damage without harming pets, plants, or people.

Pros

  • Protects outdoor wood from water damage and deterioration
  • Recommended for cut ends of soft and hardwood lumber
  • Creates a flexible, breathable barrier that stabilizes freshly cut deck boards
  • Easy to apply and available in a clear [SIZE]
  • Ultra-low VOC water-based gloss enhances the extended life of your outdoor wood
  • Odorless and fast-drying finish that is a user-safe choice for DIY projects
  • Easy clean-up with soap and water
  • Does not harm pets, plants, or people

Best Wood Sealer For Decks FAQs

Can you apply wood sealer over old sealer on a deck?

Yes, you can apply a new coat of wood sealer over an old sealer on your deck. However, it is important to prepare the surface properly before applying the new sealer. This involves cleaning the deck thoroughly to remove any dirt, grime, or mildew that may have accumulated on the surface. You can use a pressure washer or a stiff-bristled brush to clean the deck. Once the deck is clean, allow it to dry completely before applying the new sealer.

Before applying the new sealer, it is also important to check the condition of the old sealer. If the old sealer is flaking or peeling off, it is recommended to remove it completely before applying the new sealer. This will ensure that the new sealer adheres properly to the surface and provides maximum protection to your deck.

In summary, applying a new coat of wood sealer over an old sealer on your deck is possible, but it is important to prepare the surface properly and check the condition of the old sealer before applying the new one.

How long does a wood sealer last on a deck?

The longevity of a wood sealer on a deck depends on several factors such as the type of wood, the quality of the sealer, and the weather conditions in the area. Generally, a good quality wood sealer can last anywhere from one to three years on a deck. However, if the deck is exposed to harsh weather conditions such as heavy rain, snow, or extreme heat, the sealer may wear out faster.

To ensure the longevity of a wood sealer on your deck, it is important to choose a high-quality product that is specifically designed for outdoor use. It is also important to clean and maintain the deck regularly to prevent the buildup of dirt and debris that can cause the sealer to wear out faster.

If you notice that the sealer on your deck is starting to wear off or peel, it is important to reapply a new coat as soon as possible to prevent moisture and water damage to the wood. Overall, with proper care and maintenance, a wood sealer can help protect your deck and extend its lifespan for many years.

How many coats of wood sealer do I need for my deck?

The number of coats of wood sealer you need for your deck depends on the condition of your deck's wood and the type of sealer you choose. If the wood is new and untreated, it's best to apply two coats of sealer to ensure maximum protection. On the other hand, if your deck's wood has already been treated or is in good condition, then one coat of sealer may be enough.

When choosing a sealer, consider the type of wood you have and the level of protection you need. Oil-based sealers tend to provide a deeper penetration and longer-lasting protection, but they can also make the wood darker. Water-based sealers are easy to apply and dry quickly, but they may not provide as much protection as oil-based sealers.

It's also important to follow the manufacturer's instructions for application, including the recommended number of coats and drying time between coats. By taking these factors into consideration, you can select the appropriate number of coats and sealer type to ensure your deck stays protected and looks great for years to come.

What are the benefits of using a wood sealer on a deck?

Using a wood sealer on a deck comes with several benefits that can help extend the lifespan of your investment. Firstly, it helps to protect the wood from moisture, which can cause it to rot, warp or crack. This is especially important for decks that are constantly exposed to the elements. By preventing water from penetrating the wood, a sealer can help prevent damage caused by rain, snow, and humidity.

Secondly, a wood sealer can help to prevent the growth of mold and mildew, which can be unsightly and potentially harmful to your health. These organisms can also cause the wood to decay, so it's important to keep them at bay.

Another benefit of using a wood sealer on a deck is that it can enhance the natural beauty of the wood. A high-quality sealer can bring out the grain and color of the wood, making it look more attractive and inviting.

Lastly, a wood sealer can also help to prevent fading caused by UV rays. Over time, sunlight can cause the wood to lose its color and become dull. By using a sealer with UV protection, you can help prevent this from happening and keep your deck looking great for years to come.

What is the best wood sealer for decks?

When it comes to choosing the best wood sealer for decks, there are a few factors to consider. Firstly, it is important to select a sealer that provides adequate protection from moisture, UV rays, and other environmental factors that can cause damage to the wood. Secondly, the sealer should be able to enhance the natural beauty of the wood, while also providing a durable and long-lasting finish.

One of the most popular options for deck sealers is a clear penetrating sealer, which is designed to soak deep into the wood fibers and provide protection from the inside out. This type of sealer is ideal for decks made from hardwoods such as cedar, redwood, or mahogany, as it helps to preserve the natural color and grain of the wood.

Another popular option is a semi-transparent stain, which provides a more opaque finish that still allows the natural beauty of the wood to show through. This type of sealer is ideal for decks made from softer woods such as pine or spruce, as it helps to even out the color and texture of the wood while also providing protection.

Ultimately, the best wood sealer for decks will depend on your specific needs and preferences. Be sure to choose a high-quality product from a reputable brand, and follow the manufacturer's instructions carefully to ensure optimal performance and longevity.

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