Does your beautiful cedar deck or siding look dull and weathered? Cedar wood is gorgeous, but it needs protection from the sun and rain. If you skip sealing, those rich, warm tones fade fast. You might see gray streaks or even cracks appearing too soon.
Choosing the best sealant feels like a puzzle. Should you use oil, water-based, or something else entirely? Each product promises great results, but they don’t all work the same way on cedar. Picking the wrong one wastes time, money, and leaves your wood vulnerable to damage.
This post cuts through the confusion. We will show you exactly what to look for in a cedar sealant. You will learn which products offer the best defense against harsh weather and keep your wood looking fantastic for years. Get ready to give your cedar the protection it truly deserves!
Top Sealant For Cedar Wood Recommendations
- Helps Prevent Water Damage
- Helps Maintain Natural Color-Dries Clear
- Use as a wood sealer, brick sealer, or for concrete waterproofing
- Soap and water cleanup
- For concrete, brick, masonry and wood
- 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
- WATERPROOFING STAIN – Bring out the beauty of your outdoors with Thompson’s WaterSeal Clear Multi-Purpose Waterproof Stain. Proven to waterproof concrete, brick, exterior wood and other exterior surfaces.
- CLEAR STAIN – This outdoor wood stain and sealer provides a clear finish. It will hide the grain, but still allow the texture to show. It provides complete protection while adding enhancing the natural 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 patio, this concrete, brick, wood sealer is easy to apply. Clean the surface thoroughly prior to use for best results.
- THOMPSON’S – Protecting & maintaining all your exterior surfaces, can easily be simplified if you know where to start. Thompson’s WaterSeal is here to take the edge off, thanks to our one-coat products, informative how-to guides & decades of expertise.
- 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
- PROFESSIONAL-GRADE PROTECTION FOR ALL WOOD TYPES: Our premium wood sealer penetrates deep into wood surfaces to help protect against the effects of moisture, sun exposure, and outdoor wear. Suitable for cedar, pine, hardwood, bamboo, and pressure-treated wood. A great choice for garden beds, planter boxes, fences, and other outdoor wood structures. Note: Not recommended for laminated or coated wood.
- PLANT-SAFE & WATER BASE FORMULA – FREE FROM HARSH FUMES: Made with no toxic derived ingredients, this formula contains no synthetic solvents, waxes, or strong odors. Designed with your garden and family in mind, it’s a safe choice for spaces shared with plants and pets.
- LONG-LASTING PERFORMANCE WITH LESS MAINTENANCE: Unlike surface coatings that wear away quickly, our formula bonds with wood to help extend its appearance and durability over time. Helps minimize the impact of outdoor elements such as water and sun.
- HOME GARDEN & PET-FRIENDLY USE: Great for DIY garden projects, home planters, and wooden enclosures near pets. Perfect for raised beds, flower boxes, and other non-painted outdoor wooden items.
- EASY APPLICATION & LASTING RESULTS: Apply using a brush, roller, or sprayer—just two coats on a clean, dry surface are all it takes. Dries in approximately 2 hours between coats. Covers Up To 50–200 sq ft depending on the wood’s porosity. NOTE: Before applying, ensure the wood is clean, dry (moisture content < 15%), smooth, and free from dust, grease, and old coatings.
- 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
- 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
- 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
- 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
Choosing the Right Sealant for Your Cedar Wood
Cedar wood looks beautiful. It smells great too. But cedar needs protection from the weather. Rain, sun, and bugs can damage it. A good sealant keeps your cedar looking new for longer. This guide helps you pick the best one.
Key Features to Look For
When buying a sealant for cedar, look for these important things:
- UV Protection: The sun fades cedar quickly. Good sealants have UV blockers. These stop the wood from turning gray.
- Water Repellency: The sealant must push water away. This stops rot and mildew growth. Look for terms like “waterproof” or “water-resistant.”
- Mildew and Mold Resistance: Cedar is naturally resistant, but sealants add an extra layer of defense. This keeps dark spots away.
- Penetration Depth: The best sealants soak deep into the wood grain. This offers long-lasting protection, not just a surface coating.
- Maintenance Needs: Some sealants last many years. Others need reapplication every year. Check how often you must re-seal.
Important Materials in Cedar Sealants
Sealants are made from different base materials. These bases affect how the sealant works and how long it lasts.
Oil-Based Sealants
Oil-based sealants soak in very well. They penetrate deeply into the cedar fibers. This gives rich color and strong protection against moisture. They often look more natural. However, they take longer to dry. Cleanup usually requires mineral spirits.
Water-Based Sealants (Acrylic or Latex)
These dry much faster than oil-based types. They are easier to clean up—just soap and water needed. Water-based sealants often have better UV protection built in. They might not soak in as deeply as oil, but modern formulas are very good.
Hybrid Formulas
Some new products mix oil and water benefits. They offer good penetration and easier cleanup. These are becoming very popular for DIY users.
Factors That Improve or Reduce Quality
The quality of your sealant job depends on what you choose and how you apply it.
Factors That Improve Quality
- High Solids Content: Higher solids mean more protective material is left on the wood after it dries. This usually means better durability.
- Natural Oils (Tung or Linseed): If the sealant contains natural wood oils, it helps nourish the cedar, keeping it flexible and reducing cracking.
- Proper Surface Prep: Always clean and lightly sand the cedar first. A clean surface lets the sealant soak in properly.
Factors That Reduce Quality
- Too Thick Application: If you apply too much sealant at once, it can create a sticky film. This film traps moisture underneath, causing peeling later.
- Low VOC (Volatile Organic Compounds) in Poor Formulas: While low VOC is often good for the environment, some low-quality formulas sacrifice performance for lower fumes.
- Applying to Wet Wood: Never seal damp cedar. The moisture gets trapped, and the sealant will fail quickly.
User Experience and Use Cases
Think about where your cedar lives. This changes what sealant you need.
Decking and Fences
These areas take a lot of direct sunlight and foot traffic. You need a very durable sealant. Oil-based or high-quality hybrid formulas work best here because they handle wear and tear well.
Siding and Trim
Cedar siding needs protection mainly from rain and sun fading. Water-based sealants are great for siding because they allow the wood to breathe. They are also easier to recoat years later.
Furniture
Outdoor cedar furniture needs protection, but you might want a finish that doesn’t feel sticky. Look for sealants labeled as “clear” or “natural finish.” Reapplication might be needed every 1-2 seasons.
Remember, no sealant lasts forever. Plan to inspect your cedar every year. Touch-ups keep your wood looking fantastic.
10 FAQs About Cedar Wood Sealants
Q: How often should I reapply cedar sealant?
A: Most quality sealants last between one to three years. Decks need sealant more often than shaded siding.
Q: Can I use deck sealant on cedar siding?
A: Yes, you often can. However, siding might look better with a thinner, more breathable finish than a heavy deck stain.
Q: Does cedar need sealing if it is naturally weather-resistant?
A: Cedar resists rot well, but sealing protects its color. Without sealant, cedar turns an uneven silver-gray color quickly due to the sun.
Q: What is the difference between a stain and a sealer?
A: A sealer primarily protects against water and UV rays. A stain adds color pigment. Many products today are “sealer-stains” that do both jobs.
Q: Should I use a clear sealer or one with tint?
A: Clear sealers let the natural cedar color show. Tinted sealers (light brown, amber) have more UV protection because the pigment blocks the sun better.
Q: How long must the cedar dry before I can apply sealant?
A: The wood must be completely dry. Wait at least 24 to 48 hours after rain before sealing new or cleaned cedar.
Q: Can I apply sealant when it is cold outside?
A: No. Most sealants need warm temperatures, usually above 50°F (10°C), to cure correctly. Check the label for the exact temperature range.
Q: Does sealant stop mold growth completely?
A: Good sealants resist mold and mildew. But mold grows where moisture sits. Keep the area around your cedar clear of debris to help prevent mold.
Q: What happens if I use the wrong type of sealant (e.g., oil over water-based)?
A: Applying oil over a water-based finish usually causes the new coat to peel off. Always remove old finishes completely before switching product types.
Q: Is it okay to use a paint sprayer for application?
A: Sprayers are fast for large areas like fences. However, you must always back-brush the sealant immediately after spraying. This pushes the product into the wood for deep protection.
Melody Smith is a passionate writer, outdoor enthusiast, and camping expert based in the Seattle Metropolitan Area. With a deep love for nature and adventure, she shares her personal experiences, tips, and insights on MyCampingPro.com. A seasoned camper and traveler, Melody combines her creative background in design and writing with her love for the great outdoors, offering practical advice and inspiring stories to help others make the most of their outdoor experiences. When she’s not exploring the wilderness, you can find her painting, collecting vintage treasures, or diving into a good book.