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5 Best Sealers For Your Wood Deck

Keeping your wood deck in tip-top condition is a must because it endures exposure to the weather, dirt, dust, UV rays, and more. It's a beautiful addition to your home and a safe place for you and your family to enjoy outdoor activities and meals. So, protect your wood deck and coat it with a good sealer regularly.

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There are lots of excellent performing wood deck sealers out there, but only a few can stand various challenges outdoors. Here are some of them.

  1. Seal-Once Marine Premium Waterproof Wood Sealer
  2. Rust-Oleum Ultimate Spar Urethane Water Based Wood Sealer
  3. STORM SYSTEM Sealer & Stain Deck Protector
  4. DEFY Crystal Clear Composite Deck Waterproofing Sealer
  5. Eco Advance Wood Siloxane Waterproofer

Not sure which one to get? Don't worry, we've got you! We've made this list after long hours of research and noting the best features. There are also a couple of alternatives to cater to your needs and some tips and tricks to help maintain your wood deck, so keep scrolling to learn more!

Cozy villa patio with decorative plants and wooden flooring., 5 Best Sealers For Your Wood Deck

How To Choose Which Wood Deck Sealer You Need

Cozy villa patio with decorative plants and wooden flooring

Before purchasing a new sealer, there are a couple of things to look out for. First, make sure you are getting a sealer, and not a wood stain, unless that's what you are going for.

Next, consider the type of wood your deck uses because the sealer has to be compatible with the wood. You may also note how old the wood is.

Last, determine whether you want the seal to dry clear, or with a colored finish. However, it's important to note that clear finishes only offer minimal UV protection, unlike stain or colored finishes.

The 5 Best Sealers For Your Wood Deck

1. Seal-Once Marine Premium Waterproof Wood Sealer

If a clear wood sealer is what you're looking for, check out the Seal-Once Marine Premium Waterproof Wood Sealer, which features a clear, water-based formula that leaves a water-resistant barrier when it dries.

It has a quick-drying formula that provides protection from water damage, UV rays, and more, helping preserve the beauty of your wood deck.

Check out this waterproof sealer on Amazon.

2. Rust-Oleum Ultimate Spar Urethane Water Based Wood Sealer

Another water-based formula on this list is the Rust-Oleum Ultimate Spar Urethane Water Based Wood Sealer. If your nose is sensitive to strong scents, this option is perfect for you as it comes with little to no odor, making the application less stressful.

It dries in about half an hour, so you can do more activities during the day. Plus, it comes with an anti-yellowing glossy formula to help prolong the look of your wood deck.

View this gloss finish wood sealer on Amazon.

3. STORM SYSTEM Sealer & Stain Deck Protector

If you're looking for a sealer and stain in one, then you're in luck. This option from STORM SYSTEM gives you the best of both worlds — it's an oil-based, semi-transparent sealer with a chic walnut-colored finish.

It's the perfect match for mahogany, cedar, redwood, pine, spruce, and cypress wood species. Also, you can apply it using a brush, roller, or have it transferred to a spray bottle.

Purchase this versatile option on Amazon.

4. DEFY Crystal Clear Composite Deck Waterproofing Sealer

For a heavy-duty option, the DEFY Crystal Clear Composite Deck Waterproofing Sealer is the perfect choice. This sealer protects composite wood decks from moisture and stains, while also giving it an ultra-clear finish.

It uses high-quality premium resins to aid in better weather-resistance, preventing the surface from discoloration. Plus, it's very easy to apply — simply clean the surface and coat it with the sealer.

Check out this premium wood deck sealer on Amazon.

5. Eco Advance Wood Siloxane Waterproofer

For an eco-friendly option, the Eco Advance Wood Siloxane Waterproofer is a great choice. Like any other commercial, chemical-based formula, this sealer protects your wood deck from water damage, mildew, and other outdoor elements that could damage the surface.

It has a breathable formula that effectively prevents moisture from getting trapped along the wood's crevices. Its mild formulation also makes it a safe choice when you have pets around.

This eco-friendly alternative is available on Amazon for you to check out.

The Difference Between A Deck Sealer And A Deck Stain

A deck stain and a deck sealer don't really have a lot of differences as they cater to different purposes. A deck sealer is often clear and dries to prevent water from penetrating the wood surface.

In contrast, a deck stain does the same thing but comes with wood-colored finishes to protect the deck from UV rays while touching up discolorations. There are hybrid options out there on the market, one of which we've mentioned above.

If you think a deck stain is all that you need, there are also various options with colors to choose from to match your wood finish.

Check out this semi-transparent wood stain from Amazon.

How Often Should I Seal My Deck?

Ipe wood deck, modern house design wit wooden patio, low angle view of tropical hardwood decking

While the thought of deck resealing sounds like a tough job, fret not. You only have to do this every 1 to 3 years, or when necessary. You can run a test by pouring water on the surface.

If it separates to form beads or droplets and does not penetrate the surface, then your deck is still fine. However, if the wood begins to soak up the water, then it's time for a wood resealing.

How Long Does A Deck Sealer Last?

Wood deck renovation treatment,the person applying protective wood stain with a brush, overhead-view of- ipe hardwood decking restoration process

A deck sealer's longevity can vary depending on different factors, such as frequent weather changes, foot traffic, and the quality of the sealer itself.

As we've mentioned above, experts recommend sealing your wood deck every 1 to 3 years for added resilience. Always do a surface check before sealing or staining your deck to prevent any problems from arising.

Do I Need To Sand The Deck Before Sealing?

If your wood deck is brand new, sanding is unnecessary. However, if the wood comes with imperfections and rough surfaces, sanding can help in making sure the sealer sticks well.

Light sanding using sandpaper should be enough to do the job. You can also use a handheld sanding machine if you own one to make the task easier. Just be sure not to overdo it.

How Long Should A Wood Deck Last?

New red cedar outdoor wooden deck during nice weather in horizontal layout

A well-maintained wood deck can last around 10 to 20 years, but this also depends on the wood species used. Cedarwood is the most resilient for such purposes, and is less likely to retain moisture, aiding in its excellent lifespan.

A well-treated wood deck made of cedarwood can last for up to 40 years. However, if you're aiming for the deck to remain free from scratches for a long time, mahogany is the perfect choice. They're low maintenance, but may still rot over time when not kept well.

What Is The Best Treatment For Pressure-Treated Wood Decks?

terrace renovation

It's best to pair pressure-treated wood decks with water-repellent and semi-transparent oil-based stains, with re-application recommended every 12 months. This is because these options offer targeted protection while providing a much-needed refresher.

However, make sure the pressure-treated wood is dry before staining it, as a damp surface could prevent the oil-based stain from penetrating the surface. Plus, staining a damp wooden surface could further cause damages such as cracking.

The Verdict

Choosing the best sealer for your wood deck should be an easy decision, and we hope this guide has helped you in making the right choice. With so many options to choose from, we understand it can get overwhelming, but it shouldn't be.

Whatever your choice may be, the sealer should protect your favorite cozy spot outdoors from harsh UV rays, water damage, saltwater, mildew, and extreme changes in the weather. Simply follow our lead and you will have your deck looking brand new in no time!

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