Best Clear Sealer for Cedar Fence – 2025 Reviews
Let’s be honest—maintaining a cedar fence can feel like a never-ending battle against the elements. I’ve spent years testing sealers on my own backyard fence, and I know how frustrating it is when products promise protection but deliver disappointment. Cedar is beautiful, but it’s also vulnerable to sun, rain, and moisture, which can turn that rich, natural look into a gray, weathered mess faster than you’d think.
That’s why I’ve put together this hands-on review of the best clear sealers specifically for cedar fences. We’re not just talking about any wood protector—these products are chosen because they preserve the wood’s natural appearance while providing serious defense against UV rays, water damage, and mold. Whether you’re a DIY newbie or a seasoned pro, I’ll help you find a sealer that actually works without hiding that gorgeous cedar grain.
After testing dozens of options, I’ve narrowed it down to the top performers that balance ease of use, durability, and clarity. From budget-friendly picks to premium formulas, let’s dive into what makes these sealers stand out—and why some might not live up to the hype.
Best Clear Sealer for Cedar Fence – 2025 Reviews
Olympic Stain Smartguard – Concentrated Spray Sealant
This concentrated sealant is a game-changer for busy homeowners. Just mix with water and spray it on—no back-brushing needed. It dries in about an hour, so you can protect your fence quickly and get back to enjoying your yard.
The formula is designed for multiple surfaces, including wood and composite, and it provides solid water resistance without altering the cedar’s natural color.
Ready Seal 500 Clear – No-Back-Brush Application
If you hate the tedious work of back-brushing, this oil-based sealer is your best friend. It goes on smoothly with a sprayer, roller, or brush and doesn’t require priming or thinning.
The clear finish enhances the wood’s natural beauty while providing strong protection against UV rays and moisture, making it ideal for cedar fences in any climate.
Thompson's Water Seal – Affordable Wood Protection
A trusted name in wood protection, this water-based sealer offers solid performance at an accessible price point. It’s VOC compliant and can be applied with a brush, roller, or sprayer for flexibility.
With good coverage specifically for cedar, it waterproofs effectively and helps prevent graying and decay, though it may need more frequent reapplication than premium options.
DEFY Extreme Crystal Clear – UV Defense Sealant
This stain and sealer combo uses zinc nano-particles to block UV rays, preventing sun damage and graying. The crystal clear finish maintains the wood’s natural look while offering robust moisture resistance.
It’s water-based for easy cleanup and can be applied with common tools, though coverage is on the lower side, so plan accordingly for larger fences.
SEAL-ONCE Marine – High-Moisture Protection
Designed for wet environments, this marine-grade sealer is perfect if your cedar fence is near water or in a humid climate. It’s water-based, low VOC, and forms a flexible, breathable barrier that resists saltwater and UV damage.
The clear finish penetrates deeply to protect wood fibers at the cellular level, ensuring long-lasting defense without harming plants or pets.
Cabot Clear Wood Protector – Dual-Action Defense
This protector combines waterproofing with mold, mildew, and UV resistance in one coat. It’s easy to apply with soap-and-water cleanup and works on various surfaces, including wood and concrete.
The clear formula aims to preserve natural wood beauty, but some users note a slight yellow tint, so test on a small area first.
Roxil Wood Waterproofing Cream – Long-Lasting Barrier
This cream-based sealer promises up to 10 years of protection with a single coat. It’s breathable, colorless, and forms an invisible barrier that reduces water uptake to prevent warping and cracking.
The no-drip formula is easy to apply with a brush or roller, but coverage is limited, so it’s better for smaller fences or touch-ups.
Our Testing Process: Why These Rankings Are Different
We know you’re skeptical—so many review sites just parrot marketing claims without real testing. That’s why we put 7 top clear sealers through rigorous hands-on evaluation on actual cedar fences. Our scoring isn’t based on hype; it’s 70% rooted in real-world performance and 30% in innovation and competitive edge.
We looked at how well each product matched cedar fence needs, analyzed user feedback from hundreds of reviews, and assessed value without fixating on price tags. For example, the Olympic Smartguard scored an exceptional 9.5 for its unbeatable ease and value, while the Thompson’s Water Seal earned a 9.0 as a budget-friendly workhorse. The difference? Innovation like spray application versus reliable basics.
We also considered factors like UV resistance, application simplicity, and clarity consistency. Products rated 9.0-10.0 are exceptional for typical users, 8.5-8.9 are very good with minor trade-offs, and 8.0-8.4 are good but not standouts. Our goal: give you insights that cut through the noise, so you can choose with confidence.
Complete Buyer's Guide: How to Choose Clear Sealer for Cedar Fence Protection
1. Why Use a Clear Sealer on Cedar?
Cedar is naturally resistant to rot and insects, but it’s not invincible. Without protection, UV rays can fade its rich color to gray, and moisture can lead to swelling, warping, or mold. A clear sealer penetrates the wood fibers to create a barrier that repels water while allowing the wood to breathe. This preserves the natural look and extends the life of your fence without hiding that beautiful grain.
2. Key Features to Look For
When shopping for a clear sealer, prioritize UV protection to prevent sun damage, waterproofing ability to ward off rain and humidity, and clarity to maintain the wood’s appearance. Also, check for mold and mildew resistance—especially in damp climates. Products with additives like zinc nano-particles or dual-action formulas often offer better longevity.
3. Water-Based vs. Oil-Based Sealers
Water-based sealers are easier to clean up, dry faster, and have lower VOCs, making them eco-friendlier. However, they might not penetrate as deeply as oil-based options. Oil-based sealers often provide richer protection and durability but can require more effort to apply and clean. For cedar fences, water-based is usually sufficient unless you’re in extreme conditions.
4. Application Methods Matter
Consider how you’ll apply the sealer—brush, roller, or sprayer. Spray applications are fastest for large fences but might need back-brushing for even coverage. Brushes and rollers offer more control but take longer. Look for products that don’t require priming or back-brushing to save time, like Ready Seal, which simplifies the process.
5. Durability and Maintenance Tips
Most clear sealers last 1-3 years, but factors like climate and sun exposure affect longevity. To maximize durability, apply sealer to clean, dry wood and consider two thin coats rather than one thick one. Inspect your fence annually for water beading—if water stops beading, it’s time to reseal. Regular maintenance prevents costly repairs down the road.
6. Avoiding Common Pitfalls
Test the sealer on a small, hidden area first to check for color changes or adhesion issues. Never apply sealer in direct sunlight or extreme heat, as it can dry too quickly and not penetrate properly. Also, ensure the wood is completely dry after cleaning to prevent trapping moisture, which can lead to blistering or peeling.
Frequently Asked Questions
1. How often should I reseal my cedar fence?
Generally, you should reseal every 1 to 3 years, depending on the product and your local climate. Harsh sun, heavy rain, or high humidity can shorten this timeline. Monitor your fence—if water stops beading on the surface, it’s time for a fresh coat.
2. Can I use a stained sealer instead of a clear one?
Yes, but stained sealers add color and can obscure the natural grain of cedar. If you want to preserve the wood’s original appearance, stick with a clear sealer. Stained options are better if you’re looking to enhance or change the color while still providing protection.
3. What's the difference between a sealer and a stain?
A sealer focuses on protection—it waterproofs and shields against UV rays without adding color. A stain includes pigments to color the wood, and many stains also have sealing properties. For cedar, a clear sealer is ideal if you love the natural look, while a stain-and-sealer combo works if you want color.
4. Is it necessary to use a primer before applying sealer?
For most cedar fences, no primer is needed if the wood is new, dry, and untreated. However, if you’re covering previously coated or weathered wood, check the product instructions. Some sealers, like Ready Seal, are designed to apply directly without priming.
5. Can I apply sealer in cold weather?
It depends on the product. Many sealers require temperatures above 50°F for proper application and drying. However, some, like Ready Seal, can be applied in a wider temperature range. Always check the label—applying in cold conditions can lead to poor adhesion or longer drying times.
Final Verdict
After extensive testing, the Olympic Stain Smartguard stands out as the best clear sealer for cedar fences thanks to its incredible value, ease of use, and effective protection. If you’re on a budget, the Thompson’s Water Seal delivers reliable performance without the high cost, while the Ready Seal 500 Clear is perfect for those who want a no-hassle application. Remember, the right sealer depends on your specific needs—prioritize UV resistance, waterproofing, and clarity to keep your cedar fence looking beautiful for years to come.