Cedar is beautiful, right? That rich color and distinct smell… but it’s also an investment. Leaving it unprotected is like leaving your favorite leather jacket out in the rain—it’s going to get damaged. The right sealer can keep your cedar looking great for years, preventing fading, cracking, and water damage. Finding the perfect one can be tricky, so I’ve tested a bunch to help you pick the best sealer for your cedar project.
Here’s a quick look at my top picks:
- Best Overall: Ready Seal 512 Exterior Wood Stain and Sealer
- Best for Fences: Olympic Stain Maximum Waterproofing Sealant
- Best for Decks: Thompson’s WaterSeal TH.041851-1 Gallon Waterproofing Stain
- Best Oil-Based: Flood FLD620-04 Wood Oil Finish
- Best Water-Based: SEAL-ONCE MARINE Penetrating Wood Sealer
Top 5 Best Sealers for Cedar: Reviews
1. Ready Seal 512 Exterior Wood Stain and Sealer
Ready Seal 512 is a popular choice for a reason. It’s an oil-based stain and sealer that’s super easy to apply and gives cedar a beautiful, natural look. It penetrates the wood deeply, providing excellent protection against the elements.
Pros:
- ✅ Easy to apply – no back brushing needed
- ✅ Natural-looking finish
- ✅ Self-priming, saving time and effort
Cons:
- ❌ Can be a bit pricey compared to other options
- ❌ Oil-based, so cleanup requires mineral spirits
- ❌ May require more frequent reapplication in harsh climates
Verdict: If you’re looking for ease of use and a beautiful finish, Ready Seal 512 is a great option. It’s perfect for homeowners who want a professional look without the hassle.
2. Olympic Stain Maximum Waterproofing Sealant
Olympic Maximum Waterproofing Sealant is all about protection. This sealant forms a tough, durable barrier against water, UV rays, and mildew. It’s a solid choice for cedar fences, siding, and other exterior projects that need maximum weather resistance.
Pros:
- ✅ Excellent waterproofing capabilities
- ✅ Resists mildew and algae growth
- ✅ Available in a wide range of colors
Cons:
- ❌ Can be difficult to apply evenly
- ❌ May require multiple coats for optimal protection
- ❌ Some users report a strong odor during application
Verdict: If you prioritize waterproofing and long-lasting protection, Olympic Maximum is a strong contender. It’s especially well-suited for cedar fences and areas prone to moisture.
3. Thompson’s WaterSeal TH.041851-1 Gallon Waterproofing Stain
Thompson’s WaterSeal Waterproofing Stain is a budget-friendly option that still delivers good protection. It’s a clear sealant that enhances the natural beauty of cedar while providing water resistance. It’s easy to apply and dries quickly, making it a convenient choice for decks and other large surfaces.
Pros:
- ✅ Affordable
- ✅ Easy to apply with a brush, roller, or sprayer
- ✅ Dries quickly
Cons:
- ❌ May not last as long as other sealers
- ❌ Doesn’t offer as much UV protection
- ❌ Can sometimes create a milky appearance on the wood
Verdict: If you’re looking for an affordable and easy-to-use sealer for your cedar deck, Thompson’s WaterSeal is a decent option. Just be aware that it may require more frequent reapplication.
4. Flood FLD620-04 Wood Oil Finish
Flood Wood Oil Finish is designed to penetrate deeply into the wood, nourishing and protecting it from within. This oil-based finish enhances the natural grain and color of cedar, leaving a rich, warm tone. It’s a great choice for projects where you want to highlight the wood’s natural beauty.
Pros:
- ✅ Deep penetration for long-lasting protection
- ✅ Enhances the natural grain and color of the wood
- ✅ Creates a water-repellent surface
Cons:
- ❌ Can be more expensive than other options
- ❌ Requires careful application to avoid drips and runs
- ❌ May darken the wood over time
Verdict: If you’re willing to invest a bit more for a premium finish that enhances the natural beauty of cedar, Flood Wood Oil Finish is an excellent choice.
5. SEAL-ONCE MARINE Penetrating Wood Sealer
SEAL-ONCE MARINE is a water-based sealer that’s specifically formulated for marine environments, meaning it can handle serious moisture. It penetrates deep into the wood fibers, creating a waterproof barrier that protects against rot, decay, and UV damage. It’s a good choice for cedar projects that are exposed to harsh weather conditions.
Pros:
- ✅ Excellent waterproofing and UV protection
- ✅ Water-based formula is easy to clean up
- ✅ Low VOC content
Cons:
- ❌ Can be more expensive than other water-based sealers
- ❌ May require multiple coats for optimal protection
- ❌ Some users report a slight discoloration of the wood
Verdict: If you need maximum protection against water and UV damage, especially in a marine environment, SEAL-ONCE MARINE is a top-performing option.
Buying Guide
Choosing the right sealer for your cedar project depends on a few key factors. Here’s what to consider:
- Type of Sealer: Oil-based sealers penetrate deeply and offer excellent protection, but they can be more difficult to clean up and may contain higher VOCs. Water-based sealers are easier to clean and have lower VOCs, but may not last as long.
- Level of Protection: Consider the level of protection you need based on the climate and exposure to the elements. If you live in a rainy area, you’ll want a sealer with excellent waterproofing capabilities. If your cedar is exposed to direct sunlight, you’ll need a sealer with good UV protection.
- Type of Cedar: Different types of cedar may react differently to sealers. Western Red Cedar, for example, is naturally resistant to decay, while other varieties may require more protection.
- Desired Appearance: Do you want to enhance the natural grain and color of the wood, or do you prefer a clear sealer that lets the cedar’s natural beauty shine through?
- Application Method: Some sealers are easier to apply than others. Consider your skill level and the size of the project when choosing a sealer. Some can be sprayed, others brushed, and some can be both.
- Budget: Sealers range in price from affordable to premium. Set a budget before you start shopping to narrow down your options.
FAQs
Here are some frequently asked questions about sealing cedar:
Q: How often should I seal my cedar?
A: It depends on the type of sealer you use and the climate you live in. Generally, you should reseal your cedar every 1-3 years.
Q: Can I use a clear coat instead of a sealer?
A: A clear coat can provide some protection, but it’s not as effective as a dedicated sealer. Sealers are specifically formulated to penetrate the wood and provide long-lasting protection against water, UV rays, and mildew.
Q: How do I prepare cedar for sealing?
A: Start by cleaning the cedar thoroughly to remove any dirt, grime, or mildew. If the cedar is new, you may need to let it weather for a few weeks before sealing. This will allow the wood to dry out and accept the sealer more readily.
Q: Can I stain and seal cedar in one step?
A: Yes, there are stain-sealers available that combine the benefits of both products. These can save time and effort, but it’s important to choose a high-quality product that provides adequate protection.
Conclusion
Protecting your cedar with the right sealer is essential for maintaining its beauty and longevity. Whether you prioritize ease of use, maximum protection, or budget-friendliness, there’s a sealer out there that’s perfect for your project. Take the time to research your options, consider your specific needs, and choose a sealer that will keep your cedar looking great for years to come.
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