Do you love the rich, warm look of your cedar wood siding or deck? Cedar brings natural beauty to any outdoor space. But that beauty needs protection! Sun, rain, and time can quickly turn that gorgeous cedar gray and weak. Choosing the right sealant feels like a huge task. Should you pick an oil-based one or a water-based one? Do you need UV blockers? It’s easy to feel lost in the confusing labels and technical terms.
This guide cuts through the confusion. We will break down exactly what you need to look for in a cedar sealant. Learn the secrets to keeping your cedar looking brand new for years. By the end of this post, you will know exactly which product protects your investment best. Get ready to give your cedar the best defense possible!
Top Cedar Wood Sealant Recommendations
- ✔️ Perfect for fences, decks, woodwork, garden boxes, docks, and outdoor furniture ✅ USE ON ALL WOOD TYPES: This universal product can be used on all types of wood including oak, cherry wood, pint, cedar and all other wood types. Cedarshield will also work on all wood types whether it is soft, hard, new, or old wood.
- 🌞 FAST DRY TIME: Cedarshield has one of the quickest turn around times with only needing 72 hours to dry. Spend less time waiting and more time completing and enjoying projects.
- 💧 BUILDS A MOISTURE-RESISTANT BARRIER: Cedarshield will create a moisture resistant barrier that will keep out all moisture to ensure the longevity and health of your wood. Keep alcohol, grease, food oil, acid, water, and other potentially damaging moistures from ruining the surface of the wood.
- 💪 LONG LASTING TREATMENTS: Spend less time worrying about your wood projects, and more time enjoying them. Cedarshield will last you and your family up to 8 years before your next treatment.
- 🔨 USE TO PROTECT DOCKS, DECKS, FENCES & MORE: Cedarshield is the perfect addition to your big wood project like docks, decks, and fences. Make your project built to last for a lifetime by covering it with Cedarshield.
- 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
- 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
- Ready mix, ready to use semi-transparent wood stain and sealant all-in-one
- Waterproofing deck and fence protection, dries in 24 hours
- Durable water based sealant that provides waterproofing protection with resistant coating
- SUNBLOCK UV defense
- Exclusive SCUFF GUARD Technology
- 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
- WATER-BASED POLYURETHANE WOOD FINISH: Our sealant provides top-notch protection against wear and tear in high traffic areas. It's odorless and ideal for use on wood siding, log homes, swing sets, outdoor furniture, wooden deck and fence, and more.
- WOOD SEALANT: Unlike many sealers that only form a topcoat, our protector penetrates below the surface to create a long-lasting, water-resistant shield around the wood. It helps protect against the elements.
- FLOOR SEALER APPLICATOR: Our premium gloss is ultra-low VOC and great for enhancing the extended life of your exterior flooring. The sealant can be safely applied around your home, landscaping, vegetation, or over any water area.
- WATERPROOF SEALER: Ditch the oil-based sealers and choose a UV-stable coating option. Our fast-drying liquid creates a flexible, breathable barrier and provides a no-fuss, easy clean-up with soap and water, as it allows the wood to grey naturally.
- 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.
- 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.
- 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. ** This product is NOT intended for hardwoods such as ipe, mahogany and teak. **
- 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.
The Ultimate Buying Guide for Cedar Wood Sealant
Cedar wood is beautiful. It smells great too! But rain, sun, and bugs can damage it fast. A good sealant protects your investment. This guide helps you choose the best one for your cedar projects.
Key Features to Look For
When shopping, look for these important features. They tell you how well the sealant will work.
UV Protection
- Why it matters: Sunlight fades cedar. It turns wood gray.
- What to check: The label must say “UV Inhibitors” or “Sun Protection.” Strong UV protection keeps the natural color longer.
Water Repellency (Hydrophobic Quality)
- Why it matters: Water causes rot and mildew.
- What to check: Look for terms like “Waterproof” or “Beads Water.” This means water rolls right off the surface.
Mildew and Mold Resistance
- Why it matters: Damp cedar easily grows green or black mold.
- What to check: Many quality sealants include fungicides. These chemicals stop mold growth.
Penetration Depth
- Why it matters: Surface coatings wear off quickly. Deep penetration offers lasting protection.
- What to check: Oil-based sealants usually penetrate deeper than thin, water-based ones.
Important Materials in Cedar Sealants
The ingredients determine the sealant’s strength and look.
Oil-Based vs. Water-Based
Most cedar sealants fall into two main groups:
- Oil-Based (Alkyd/Natural Oils): These soak deep into the wood grain. They offer excellent water resistance and a rich, natural look. They take longer to dry.
- Water-Based (Acrylic/Latex): These dry much faster. Cleanup is easy with just soap and water. They often create a surface film that may peel over time.
Natural Oils
Some premium sealants use natural oils like Tung or Linseed oil. These enhance the wood’s natural beauty but might require more frequent reapplication.
Factors That Improve or Reduce Quality
Not all sealants perform the same way. Pay attention to these quality factors.
High-Quality Ingredients Improve Quality
- Sealants with high concentrations of solids (the actual protective material) last longer. Read the technical data sheet if available.
- Products labeled “Commercial Grade” often use better resins and UV blockers.
Application Issues Reduce Quality
- If the wood is too wet during application, the sealant will not stick well. The bond becomes weak.
- Applying the sealant too thickly can cause bubbling or peeling, especially with film-forming (water-based) products.
User Experience and Use Cases
Think about where you will use the sealant. This affects your choice.
Decking and Railings
Decks take heavy foot traffic and standing water. You need a very durable, penetrating sealant here. Oil-based products often work best for maximum grip and water shedding on horizontal surfaces.
Fences and Siding
These vertical surfaces need great UV protection to prevent fading. Ease of re-coating is important since fences are large areas. Water-based formulas can sometimes be easier to spray on large siding panels.
Furniture
For outdoor tables and chairs, you want a sealant that does not feel sticky after drying. Look for sealants that dry to a matte or satin finish, not a high gloss, which can look unnatural on furniture.
10 Frequently Asked Questions (FAQ) About Cedar Wood Sealant
Q: How often do I need to reseal my cedar?
A: Generally, you should reseal every 1 to 3 years. High-exposure areas, like decks, need sealing more often than shaded fences.
Q: Can I apply sealant over old stain?
A: You should remove old, peeling stain first. Most sealants bond best to bare, clean wood. If the old stain is clear and intact, you might be able to apply a new coat over it.
Q: What temperature is best for applying sealant?
A: Most manufacturers suggest applying when temperatures are between 50°F and 90°F. Avoid applying in direct, hot sunlight.
Q: Does cedar sealant change the color of the wood?
A: Some sealants are clear. Others add a slight tint, often called “cedar tone” or “natural.” Always test a small, hidden area first.
Q: How long does oil-based sealant take to dry?
A: Oil-based sealants usually need 24 to 48 hours to dry completely before you can walk on the surface. Always check the specific product label.
Q: Is penetrating sealant better than film-forming sealant?
A: For cedar, penetrating (oil-based) sealants are usually better. They soak in and protect the wood fibers from inside, making them less likely to peel.
Q: Do I need to sand the cedar before sealing?
A: Yes, you must clean the wood. Light sanding (using 80 or 100 grit sandpaper) opens the wood pores. This helps the sealant soak in evenly.
Q: What happens if I don’t seal my cedar?
A: Unsealed cedar will turn gray quickly due to UV damage. It will absorb water, leading to cracking, splitting, and eventually rot.
Q: Can I use deck sealant on cedar siding?
A: Often, yes. However, siding needs excellent UV protection because it gets hit by the sun all day. Choose a product explicitly rated for siding or vertical surfaces if possible.
Q: What is the easiest way to clean up water-based sealant?
A: Water-based sealants are easy to clean. Use warm water and mild soap on brushes and spills before the product dries.