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Best Sealer For Cedar Posts (2025 Updated)

If you’re looking for an effective way to protect your cedar posts from the elements, a high-quality sealer is a must-have. Cedar is a popular choice for outdoor applications because of its natural beauty and durability, but without proper protection, it can quickly deteriorate. A sealer will help to lock in the natural oils and protect against moisture, rot, and termites, ensuring that your cedar posts last for years to come.

When choosing a sealer for your cedar posts, there are several factors to consider. First and foremost, you want to look for a product that is specifically designed for use on cedar. This will ensure that the sealer penetrates deeply into the wood and provides maximum protection against the elements. Other factors to consider include the type of finish you prefer (such as clear or tinted), the level of UV protection the sealer provides, and whether or not it is easy to apply.

To help you make an informed decision, ask yourself some questions before you buy. For example, how important is maintaining the natural color and beauty of your cedar posts? Are you willing to spend a bit more on a high-quality sealer to ensure that your posts last longer? Finally, do you prefer a clear or tinted finish? By considering these questions and doing your research, you can find the perfect sealer for your cedar posts and enjoy long-lasting protection and beauty.

10 Best Sealer For Cedar Posts

# Product Image Product Name Product Notes Check Price
1
Ideal for waterproofing and sealing wood surfaces such as decks, fences, and outdoor furniture.
2
Ideal for protecting and staining exterior wood surfaces, such as decks, fences, and outdoor furniture.
3
Ideal for waterproofing and sealing wood surfaces, providing long-lasting protection against water damage, mold, and mildew.
4
Garden-Seal is ideal for protecting outdoor surfaces from water damage, UV rays, and mildew.
5
The product is ideal for sealing and protecting wood from water damage, rot, and decay.
6
Seal It Green® Extreme Total Wood Cedar is ideal for protecting all types of wood from water damage, cupping, cracking, and sun.
7
This product is ideal for protecting and enhancing the appearance of wood surfaces, particularly cedar, while being environmentally safe.
8
It is ideal for sealing and protecting wood surfaces from water damage and prolonging their lifespan.
9
Ideal for enhancing outdoor living spaces such as backyards, decks, and patios by providing a durable, rot-resistant structure for entertainment.
10
The product is ideal for a large mailbox package in a bronze finish, perfect for streetside use.
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.
Garden-Seal is ideal for protecting outdoor surfaces from water damage, UV rays, and mildew.
The product is ideal for sealing and protecting wood from water damage, rot, and decay.
Seal It Green® Extreme Total Wood Cedar is ideal for protecting all types of wood from water damage, cupping, cracking, and sun.
This product is ideal for protecting and enhancing the appearance of wood surfaces, particularly cedar, while being environmentally safe.
It is ideal for sealing and protecting wood surfaces from water damage and prolonging their lifespan.
Ideal for enhancing outdoor living spaces such as backyards, decks, and patios by providing a durable, rot-resistant structure for entertainment.
The product is ideal for a large mailbox package in a bronze finish, perfect for streetside use.

1. 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.

2. 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

3. 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

4. Garden-Seal

Protecting wood and metal from salt damage is easy with this amazing coating. It is perfect for coating treated posts and stakes before installing them below grade or in concrete. No harsh smells during or after application, and there are no waxy or oily residues left behind.

This coating is specially designed to protect wood and metal from salt damage. It can be used on treated posts and stakes, and is ideal for use when installing them below grade or in concrete. The coating does not have any harsh smells, and it is easy to apply. There are no waxy or oily residues left behind after application.

Protecting wood and metal from salt damage has never been easier. This coating is perfect for coating treated posts and stakes before installing them below grade or in concrete. There are no harsh smells during or after application, and there are no waxy or oily residues left behind. It is specially designed to prevent salt damage to both wood and metal.

Pros

  • Easy to apply
  • No harsh smells during or after application
  • No waxy or oily residues left behind
  • Ideal for use on treated posts and stakes
  • Great for preventing salt damage to both wood and metal

5. 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

6. Plant-Based Protection: Seal It Green Cedar

The Lifetime Wood Core Protection is a highly effective solution for protecting your wooden surfaces. The product is made of eco-friendly plant-based oils that penetrate deep into the wood, forming a permanent bond with the wood fibers. This ensures that the wood is well protected against UV rays, water, and other natural damage agents, thus eliminating the need for constant replacement of rotten deck boards.

The product is versatile and can be used to seal, waterproof, and protect various types of wooden surfaces, including exotic wood, bamboo, IPE pressure-treated wood, and everything in between. It provides green wood protection against cupping, curling, cracking, and end-grain checking and splitting. The product is also easy to use and provides the same results as those achieved by professionals. It does not contain mineral oils, cedar oil or petroleum oils, and it covers up to 400 square feet.

If you're looking for a highly effective and eco-friendly solution for protecting your wooden surfaces, the Lifetime Wood Core Protection is the perfect product for you. With its unique formula, it ensures that your wooden surfaces remain looking great for years to come.

Pros

  • Eco-friendly and made of plant-based oils
  • Provides long-lasting protection against UV rays, water, and natural damage agents
  • Eliminates the need for constant replacement of rotten deck boards
  • Versatile and can be used on various types of wooden surfaces
  • Provides green wood protection against cupping, curling, cracking, and end-grain checking and splitting
  • Easy to use and provides professional results
  • Does not contain mineral oils, cedar oil or petroleum oils
  • Covers up to 400 square feet

7. Thompson's Water Seal Transparent Wood Sealer, Natural Cedar, 1 Gallon

This wood protector offers exceptional protection against water and sun damage, ensuring year-round protection with just one coat. It is designed to enhance the natural grain of the wood while providing guaranteed protection for up to 4 years on decks and 5 years on fences and siding. This product is ideal for those looking for an affordable yet effective solution to protect their outdoor wood surfaces.

The wood protector exceeds the industry standard ASTM D-4446 for waterproofing wood, making it an excellent choice for those living in areas with frequent rain or high humidity. It is formulated to penetrate deep into the wood, providing long-lasting protection against the elements. With its durable and long-lasting formula, this wood protector is an excellent investment for anyone looking to preserve the natural beauty of their outdoor wood surfaces.

This wood protector is easy to apply and dries quickly, allowing for hassle-free application that won't leave behind a sticky residue. Its clear finish ensures that the natural beauty of the wood shines through, while providing a protective barrier against the elements. With its industry-leading protection and affordable price point, this wood protector is the ideal choice for anyone looking to protect their outdoor wood surfaces without breaking the bank.

Pros

  • Offers exceptional protection against water and sun damage
  • Guaranteed protection for up to 4 years on decks and 5 years on fences and siding
  • Exceeds industry standard ASTM D-4446 for waterproofing wood
  • Easy to apply and dries quickly
  • Clear finish enhances the natural beauty of the wood

Cons

  • – May require multiple coats for optimal protection

8. Cedar Pergola: Durable, Snow And Wind Supported.

The Cedar pergola is the perfect addition to any backyard deck and/or patio. Made of durable cedar wood, it thrives in damp climates and is rot-resistant, making it ideal for severe weather conditions. The four uprights are made of pure cedar and are secured by patent-pending decorative foot covers that hide unique anchors. The pergola's spacious room (14' W x 10' D x 7' 10" H) is perfect for entertaining guests, while the arbor top dimensions measure 12' W x 10' D. The headroom underneath is 6' 7" and the post-to-post dimensions inside are 7' x 9". The pergola is pre-cut, pre-stained, and ready to assemble, making it a DIY-friendly product. It has sturdy 5 1/2" cedar upright posts with diagonal braces to prevent tipping over. The installation app included in the package is a step-by-step guide with BILT's all-in-one 3D guided installation app, making assembly hassle-free. With over 35 years of experience, the company has been offering ready-to-assemble outdoor play and patio structures, bringing joy to children and adults from their swing sets and playhouses to their wooden and metal pergolas, cabanas, and gazebos.

Pros

  • Made of durable cedar wood that is rot-resistant, making it ideal for severe weather conditions
  • Patent-pending decorative foot covers hide unique anchors that keep the pergola firmly secured down
  • Spacious room for entertaining guests
  • Pre-cut, pre-stained, and ready to assemble, making it a DIY-friendly product
  • Sturdy 5 1/2" cedar upright posts with diagonal braces to prevent tipping over
  • Installation app included in the package is a step-by-step guide with BILT's all-in-one 3D guided installation app
  • Over 35 years of experience in offering ready-to-assemble outdoor play and patio structures

9. Whitehall Deluxe Streetside Mailbox Package,bronze,extra Large,70727

Upgrade your curb appeal with this stylish mailbox and post set. The set includes a sturdy post and mailbox made from high-density aluminum alloy that is built to withstand the harshest weather and environmental elements. The mailbox is coated with Alumni-shield to protect it against wear and tear, ensuring it looks great and lasts for years to come.

The set comes with a free order form to customize your own side plaques, giving you the opportunity to personalize your mailbox and make it truly unique. The mailbox and post set is easy to install and makes a great first impression, enhancing the value of your home and showing off your attention to detail.

Invest in this durable and stylish mailbox and post set to elevate your home's exterior and give your property a professional and polished look.

Pros

  • Made from high-density aluminum alloy for durability and longevity
  • Coated with Alumni-shield to protect against weather and environmental damage
  • Free order form to customize side plaques for a personalized touch
  • Easy to install and makes a great first impression

Best Sealer For Cedar Posts FAQs

Are there any specific application techniques for sealing cedar posts?

Yes, there are specific application techniques for sealing cedar posts. Cedar is a type of wood that is naturally resistant to decay and insects, but it still requires protection from the elements. One of the best ways to protect cedar posts is by sealing them with a high-quality sealant.

Before applying the sealant, it is important to ensure that the cedar posts are clean and dry. Use a stiff brush to remove any dirt or debris, and then allow the posts to dry completely. Once the posts are clean and dry, apply the sealant using a brush or roller. Be sure to coat the entire surface of the post, including the end grain.

It is recommended to apply two coats of sealant for maximum protection. Allow the first coat to dry completely before applying the second coat. It is also important to choose a sealant that is specifically designed for use on cedar wood.

In addition to sealing the posts, it is also a good idea to stain or paint them for additional protection and aesthetic appeal. Overall, properly sealing cedar posts can help to extend their lifespan and maintain their natural beauty.

Can a clear sealer be used on cedar posts to maintain their natural color?

Yes, a clear sealer can be used on cedar posts to maintain their natural color. Cedar is a popular choice for outdoor use because it is naturally resistant to decay and insects. However, over time, cedar can still become gray and weathered due to exposure to sun, rain, and other elements. Applying a clear sealer can help to protect the cedar from these elements and keep it looking its best.

When choosing a clear sealer for cedar posts, it is important to select a product that is specifically designed for outdoor use and that is compatible with cedar. It is also important to apply the sealer correctly, following the manufacturer's instructions. This may involve cleaning the cedar first, allowing it to dry completely, and then applying the sealer evenly with a brush or sprayer.

Overall, a clear sealer can be a great option for maintaining the natural color and beauty of cedar posts. With proper selection and application, it can help to protect the cedar and keep it looking great for years to come.

How often should cedar posts be sealed to maintain their durability?

Cedar posts are a popular choice for outdoor fencing and decking due to their natural resistance to insects and decay. However, to maintain their durability and longevity, it is important to seal them regularly. The frequency of sealing cedar posts depends on several factors such as weather conditions, exposure to sunlight, and the type of sealant used.

If the cedar posts are exposed to direct sunlight and harsh weather conditions, it is recommended to seal them every 2-3 years. On the other hand, if they are in a shaded area and protected from the elements, sealing them every 3-4 years may be sufficient. It is also important to choose a high-quality sealant that is specifically designed for cedar wood.

Regular maintenance of cedar posts is essential to prevent them from rotting or becoming damaged over time. In addition to sealing, it is recommended to clean them annually with a mild detergent and water to remove any dirt or debris that may have accumulated. By following these simple steps, you can ensure that your cedar posts remain strong and durable for years to come.

What are the benefits of using a sealer on cedar posts?

There are several benefits of using a sealer on cedar posts. Firstly, cedar is a popular choice for outdoor construction because of its natural resistance to decay and insects. However, over time, cedar can still be affected by moisture and harsh weather conditions, which can cause it to crack, split or warp. Using a sealer on cedar posts can help protect them from these elements, extending their lifespan and reducing the need for costly repairs or replacements.

In addition to protecting cedar from damage, sealers can also enhance its natural beauty. Cedar has a unique grain pattern and color that can be enhanced with the right sealer. This can help to create a more polished and professional look for your outdoor space.

Another benefit of using a sealer on cedar posts is that it can help to prevent fading and discoloration. Sunlight and UV rays can cause cedar to fade over time, but a quality sealer can help to prevent this, keeping your posts looking vibrant and new for longer.

Overall, using a sealer on cedar posts is a smart investment for anyone who wants to protect and enhance their outdoor construction projects. By choosing the right sealer and applying it correctly, you can enjoy the many benefits of cedar without worrying about damage or deterioration.

What is the best type of sealer for cedar posts?

When it comes to choosing the best type of sealer for cedar posts, there are a few factors to consider. Cedar is a naturally resistant wood, but it is still susceptible to weathering and decay over time. Therefore, a good sealer can help to protect the wood and prolong its lifespan.

One of the most popular types of sealers for cedar posts is a clear or semi-transparent stain. This type of sealer will enhance the natural beauty of the wood while providing a protective layer against UV rays, moisture, and mildew. It is important to choose a high-quality stain that will penetrate the wood and provide long-lasting protection.

Another option is a water-repellent sealer, which is designed to repel water and prevent moisture from penetrating the wood. This type of sealer is especially useful in areas with high humidity or frequent rainfall.

Ultimately, the best type of sealer for cedar posts will depend on your specific needs and preferences. Consider factors such as the climate in your area, the level of maintenance you are willing to undertake, and the overall aesthetic you are trying to achieve. With the right sealer, your cedar posts can remain beautiful and durable for years to come.

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