Does your beautiful cedar deck or siding look dull and weathered after just one season? Cedar wood is naturally stunning, but the elements are tough on it. Sun, rain, and time quickly turn that rich reddish-brown into a faded gray. Protecting your investment shouldn’t feel like a guessing game, yet choosing the right sealer often does!
The market is flooded with sealers promising miracles, leaving homeowners confused about oil-based versus water-based formulas, UV protection levels, and durability. You worry about choosing a product that peels quickly, changes the wood’s natural look, or requires constant reapplication. Finding the perfect barrier that keeps your cedar looking vibrant for years is the real challenge.
This guide cuts through the confusion. We will break down exactly what makes a great cedar sealer and show you how to pick the absolute best option for your project, whether you want a natural look or deep color enhancement. Get ready to stop guessing and start protecting your cedar like a pro.
Top Sealer For Cedar Wood Recommendations
- NO LAPS, RUNS OR STREAKS: Goof Proof formula with no back brushing required; ideal for exterior wood projects
- OUTSTANDING DURABILITY: No cracking, chipping, flaking or peeling with excellent moisture resistance and UV protection; great for outdoor decks, fences, wood siding and more
- CAN WITHSTAND RAIN WITHIN MINUTES OF APPLICATION: Can also be applied in direct sunlight
- HIGH AND LOW TEMPERATURE APPLICATION: Requires no wet-line application, the product will blend itself and can be applied in any temperature range for proper application
- EASY TO APPLY AND MAINTAIN: Low odor formula may be applied using sprayer, roller or brush onto the wood's surface; no sanding or stripping required for reapplication
- STAIN & SEALER IN ONE - Enhances wood’s natural beauty while providing durable, waterproof protection.
- NO PRIMING OR DILUTING - Easy application with no need for a primer, thinning, or back-brushing.
- UV & WEATHER RESISTANT - Protects against fading, water damage, and harsh outdoor conditions.
- SELF-BLENDING FORMULA - Ensures an even, streak-free finish with no lap marks.
- IDEAL FOR EXTERIOR WOOD - Perfect for decks, fences, siding, outdoor furniture, and more.
- GARDEN BED WOOD SEALER - For Use On Cedar And All Wood Types Used In Raised Bed Gardens. Deep Penetrating, Natural Oils, Bond With Wood Fibers To Protect Wood For A Decade Or More
- NON-TOXIC - FDA Food Contact Safe. Plant Based With No Toxic Chemicals That Can Leach Into Your Garden's Soil And A Natural Citrus Scent. WARNING: Never use sealers made of acrylics, polymers, silane/siloxane/silicone for vegetable gardens. They are derived from petroleum and toxic. If the label says the product contains any of those ingredients return it and purchase a 100% plant based option.
- PLANT SAFE - No Toxic Chemicals To Harm Your Plants, Vegetables Or You. Ingredients You Can Understand (Listed In Product Description Section). ALSO GREAT FOR PET PROJECTS. Seal Your Chicken Coup Or Dog House
- PROFESSIONAL STRENGTH - Covers Up To 200 SF. Used By Professional Growers That Are Required To Have Their Soils Tested For Harmful Chemicals
- MULTI-PURPOSE - Safe For Sealing and Protecting Bird Houses, Bird Feeders, Dog Houses, Chicken Coops. Safe For Animals And Pets
- NO LAPS, RUNS OR STREAKS: Goof Proof formula with no back brushing required; ideal for exterior wood projects
- OUTSTANDING DURABILITY: No cracking, chipping, flaking or peeling with excellent moisture resistance and UV protection; great for outdoor decks, fences, wood siding and more
- CAN WITHSTAND RAIN WITHIN MINUTES OF APPLICATION: Can also be applied in direct sunlight
- HIGH AND LOW TEMPERATURE APPLICATION: Requires no wet-line application, the product will blend itself and can be applied in any temperature range for proper application
- EASY TO APPLY AND MAINTAIN: Low odor formula may be applied using sprayer, roller or brush onto the wood's surface; no sanding or stripping required for reapplication
- WATERPROOFING STAIN – Bring out the beauty of your outdoor wood with Thompson’s WaterSeal Transparent Waterproofing Wood Stain. Along with adding smooth color, it’s a deck sealer that prevents water damage to help you maintain your outdoor living spaces.
- TRANSPARENT WOOD STAIN – This outdoor wood stain provides a transparent finish. It will hide the wood grain, but still allow the wood texture to show. It provides complete protection while adding boldly tinted color.
- FADE RESISTANT FINISH – The advanced polymers in this outdoor wood and deck stain deliver fade-resistant color so it stays looking great year-round. The coating resists UV damage, so you can apply with confidence.
- EASY TO USE – Whether you’re refinishing an existing fence or putting the finishing touches on a new deck, this waterproofing wood stain is easy to apply. It can be applied to damp or dry wood. Clean the surface thoroughly prior to use for best results.
- EXCEEDS INDUSTRY STANDARDS – Thompson’s Waterproofing Exterior Wood Stain exceeds Industry Standard ASTM D-4446 for waterproofing wood.
- MARINE SEALANT: Our liquid formula creates a UV-stable coating for protection against the elements, saltwater spray, and water damage. Marine is a great protector for outdoor furniture, thermally modified wood, and boat docks. Marine is safe for use over open water and is non-hazardous to aquatic life.
- DECK STAIN: It's water-based, ultra-low VOC, great for enhancing the extended life of your flooring, siding, and porch. The paint forms a water-resistant shield around wood fibers at the cellular level to help preserve the natural color.
- WATERPROOF WOOD SEALER: The wood used on boat docks, decks, and retaining walls near rivers, lakes, oceans, and ponds is subjected to constant moisture. We crafted a sealer, remove stain, and finish all in one, specifically for these installations.
- WOOD SEALANT: Our fast-drying protector penetrates wood below the surface, coating the wood fibers at the cellular level, which creates a long-lasting, flexible, breathable barrier. It provides a no-fuss, easy clean-up with soap and water.
- SEAL-ONCE: Our user-friendly wood sealers and stains are an effective way to protect your lumber or concrete against water damage. When you use Seal-Once, you have the satisfaction of knowing our products will not harm pets, plants, or people.
- MARINE SEALANT: Our liquid formula creates a UV-stable coating for protection against the elements, saltwater spray, and water damage. Marine is a great protector for outdoor furniture, thermally modified wood, and boat docks. Marine is safe for use over open water and is non-hazardous to aquatic life.
- DECK STAIN: It's water-based, ultra-low VOC, great for enhancing the extended life of your flooring, siding, and porch. The paint forms a water-resistant shield around wood fibers at the cellular level to help preserve the natural color.
- WATERPROOF WOOD SEALER: The wood used on boat docks, decks, and retaining walls near rivers, lakes, oceans, and ponds is subjected to constant moisture. We crafted a sealer, remove stain, and finish all in one, specifically for these installations.
- WOOD SEALANT: Our fast-drying protector penetrates wood below the surface, coating the wood fibers at the cellular level, which creates a long-lasting, flexible, breathable barrier. It provides a no-fuss, easy clean-up with soap and water.
- SEAL-ONCE: Our user-friendly wood sealers and stains are an effective way to protect your lumber or concrete against water damage. When you use Seal-Once, you have the satisfaction of knowing our products will not harm pets, plants, or people.
- GARDEN BED WOOD SEALER - For Use On Cedar And All Wood Types Used In Raised Bed Gardens. Deep Penetrating, Natural Oils, Bond With Wood Fibers To Protect Wood For A Decade Or More
- NON-TOXIC - FDA Food Contact Safe. Plant Based With No Toxic Chemicals That Can Leach Into Your Garden's Soil And A Natural Citrus Scent. WARNING: Never use sealers made of acrylics, polymers, silane/siloxane/silicone for vegetable gardens. They are derived from petroleum and toxic. If the label says the product contains any of those ingredients return it and purchase a 100% plant based option.
- PLANT SAFE - No Toxic Chemicals To Harm Your Plants, Vegetables Or You. Ingredients You Can Understand (Listed In Product Description Section). ALSO GREAT FOR PET PROJECTS. Seal Your Chicken Coup Or Dog House
- PROFESSIONAL STRENGTH - Covers Up To 400 SF. Used By Professional Growers That Are Required To Have Their Soils Tested For Harmful Chemicals
- MULTI-PURPOSE - Safe For Sealing and Protecting Bird Houses, Bird Feeders, Dog Houses, Chicken Coops. Safe For Animals And Pets
Your Complete Guide to Choosing the Best Sealer for Cedar Wood
Cedar wood is beautiful. It resists rot and bugs naturally. But even cedar needs protection outside. A good sealer keeps its color bright and stops water damage. This guide helps you pick the perfect sealer.
Key Features to Look For
When shopping, check for these important features. They tell you how well the sealer will work.
- **UV Protection:** Sunlight fades cedar fast. Look for sealers with strong UV blockers. This keeps the wood looking new longer.
- **Water Repellency:** The sealer must push water away. This stops swelling, cracking, and mildew growth.
- **Mildew and Mold Resistance:** Outdoor wood often grows mold. Good sealers have additives to fight this growth.
- **Penetration Depth:** A deep-penetrating sealer soaks into the wood fibers. This offers longer-lasting protection than surface coatings.
- **Ease of Application and Cleanup:** Some sealers require special thinners. Others clean up easily with just soap and water.
Important Materials in Cedar Sealers
The ingredients matter greatly for performance. Sealers generally fall into two main material groups: oil-based and water-based.
Oil-Based Sealers: These often use natural oils like tung or linseed oil, mixed with resins. They soak deep into the cedar. They offer rich color enhancement but can take longer to dry. They often require mineral spirits for cleanup.
Water-Based Sealers (Acrylic/Latex): These use synthetic polymers suspended in water. They dry much faster and clean up easily with water. They usually form a protective film on the surface, though modern formulas penetrate well too.
Pigmentation Level: Sealers come clear or tinted. Clear sealers let the natural grain show. Toners or semi-transparent stains add color while still letting the wood texture show through. Fully opaque stains hide the grain completely.
Factors That Improve or Reduce Quality
The quality of the sealer affects how long it lasts.
Factors That Improve Quality: High-quality resins and UV absorbers boost performance. Look for products labeled “commercial grade” or those containing high solids content. Higher solids mean more protective material is left on the wood after the solvent evaporates.
Factors That Reduce Quality: Cheap sealers often use low-quality fillers or very little actual UV protection. If a sealer dries too quickly, it might just sit on the surface, leading to peeling later. Avoid sealers that promise protection in just one coat if you are sealing raw, porous cedar.
User Experience and Use Cases
How you plan to use the sealer changes your choice.
For a deck that gets heavy foot traffic, you need a durable sealer that resists abrasion. Oil-based penetrating sealers often work best here because they don’t peel easily.
For cedar siding or fences, where wear is low, a water-based product might be easier for yearly touch-ups. It dries fast, so you can finish the job quickly.
Always test the sealer first! Apply a small amount to an unseen area. This lets you check the final color and how the wood absorbs the product before you commit to the whole project.
10 Frequently Asked Questions About Cedar Wood Sealers
Q: How often do I need to re-seal my cedar wood?
A: Most high-quality sealers last between one and three years. Areas exposed to direct sun and rain need sealing more often, maybe every year.
Q: Can I seal wet cedar wood?
A: No. You must wait until the cedar is completely dry. Sealing wet wood traps moisture, which causes mildew and peeling.
Q: Do I need to clean the wood before sealing?
A: Yes, always clean the wood first. Use a dedicated cedar cleaner or brightener to remove dirt, graying, and mildew. Rinse thoroughly and let it dry fully.
Q: Will sealer change the natural color of my cedar?
A: Clear sealers usually deepen the color slightly, making it look “wetter.” Tinted sealers will change the color to match the pigment you choose.
Q: What is the difference between a sealer and a stain?
A: A sealer protects the wood from water and UV rays. A stain primarily adds color. Many modern products are sealers *and* stains combined.
Q: Should I use an oil-based or water-based sealer?
A: Oil-based penetrates deeper for rich protection, especially on furniture. Water-based dries fast and is easier to clean, making it great for large surfaces like siding.
Q: How long does it take for the sealer to dry?
A: Drying times vary. Water-based sealers might be dry to the touch in two to four hours. Oil-based products might take 12 to 24 hours before you can apply a second coat or walk on the surface.
Q: Can I apply sealer with a brush or a sprayer?
A: Both work. Brushes force the product into the grain for better penetration. Sprayers cover large areas quickly, but you often need to back-brush (lightly brush over the sprayed area) to ensure deep absorption.
Q: What happens if I skip sealing my cedar?
A: Unsealed cedar will turn gray or silver due to UV damage. It will absorb water, leading to cupping, warping, and eventually rot, even though cedar resists it naturally.
Q: Can I seal over an old, peeling sealer?
A: No. You must remove the old, peeling sealer completely first. Sanding or using a chemical stripper is necessary. Apply the new sealer only to bare, clean wood for the best bond.