Does your beautiful redwood deck look dull and faded under the sun? Redwood is amazing, but it needs protection to stay strong and look its best. Rain, sun, and everyday use can quickly damage this gorgeous wood. Choosing the right sealer feels like a huge task. You want something that works well but doesn’t change that natural redwood color you love. Many products promise a lot but don’t deliver real protection.
Stop guessing about the best way to care for your deck! This post cuts through the confusion. We will show you exactly what features matter most when sealing redwood. You will learn the secrets to keeping your deck vibrant and protected for years to come. Ready to give your redwood the shield it deserves? Let’s dive into finding the perfect deck sealer now.
Top Deck Sealer For Redwood 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
- 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.
- WATERPROOFING STAIN – Bring out the beauty of your outdoor wood with Thompson’s WaterSeal Semi-Transparent Waterproofing Wood Stain. Along with adding lightly tinted color, it’s a deck sealer that prevents water damage to help you maintain your outdoor living spaces.
- SEMI-TRANSPARENT WOOD STAIN – This outdoor wood stain provides a semi-transparent finish. It will hide the wood grain, but still allow the wood texture to show. It provides complete protection while adding lightly 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.
- 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.
- 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
- STORM PROTECTOR: Storm Protector is a penetrating, semi-transparent stain and sealer that highlights the natural beauty of the wood grain while providing protection from Mother Nature.
- PROTECT YOUR EXTERIOR WOOD SURFACES: This siding, deck and fence stain and sealer offers superior waterproofing and UV protection to help prevent color fading.
- FOR A VARIETY OF WOOD SUBSTRATES: Storm Protector exterior wood stain and sealer can be applied to any exterior wood, including redwood, cedar, pine, douglas fir, spruce, cypress, mahogany and pressure treated lumber.
- EASY TO APPLY: Storm Protector features a ready-to-use formula that's easy to apply. Mix thoroughly and apply to a prepared wood surface with a brush, roller, or sprayer. Packaged in a 1-gallon container.
- PROTECTION TO WEATHER WHATEVER: From clear finishes that protect wood and highlight its natural beauty to more dramatic solid color stains, Storm Stain offers the look you want as well as the protection to weather whatever.
- ONE‑COAT PROTECTION: Oil‑base formula seals and protects exterior wood surfaces in a single coat, delivering strong defense against water and UV exposure
- READY FOR NEW OR WEATHERED WOOD: Can be applied to new, old, or weathered wood once properly cleaned, helping protect surfaces from early moisture and UV damage
- RUGGED DURABILITY: Helps prevent cracking, splitting, and warping to maintain wood integrity in outdoor environments
- UNIFORM FINISH: Turbo Spray System ensures complete coverage and consistent color; product can be back‑brushed or wiped if needed for an even appearance
- VERSATILE OUTDOOR USE: Ideal for decks, fences, lattice, and wood furniture; suitable for previously sealed surfaces
Choosing the Best Deck Sealer for Your Redwood: A Buyer’s Guide
Redwood decks look beautiful. They are strong and last a long time. Sealing your redwood deck protects it. A good sealer keeps the wood safe from sun, rain, and rot. This guide helps you pick the right sealer.
Key Features to Look For in a Redwood Sealer
When you shop for a sealer, check these important things.
- **UV Protection:** The sun fades wood fast. Look for sealers with strong UV blockers. This keeps your redwood looking new longer.
- **Water Repellency:** The sealer must push water away. Water causes wood to swell, crack, and rot.
- **Mildew and Mold Resistance:** Damp wood grows mold. Choose a product built to fight off these fuzzy invaders.
- **Penetration:** The best sealers soak deep into the wood fibers. This offers protection from the inside out, not just a thin coat on top.
- **Finish Type:** Do you want a clear look, or a slight tint? Sealers come in clear, semi-transparent (which lets the grain show), and solid colors.
Important Materials in Deck Sealers
The stuff inside the can matters a lot. Most good redwood sealers use one of two main bases.
Oil-Based Sealers
Oil-based sealers soak deep into the redwood. They provide excellent water protection. They often last longer than water-based options. However, they take longer to dry. Cleanup usually needs mineral spirits or paint thinner.
Water-Based (Acrylic) Sealers
Water-based sealers are easier to use. They dry quickly. Cleanup is simple—just soap and water. Modern water-based formulas offer great protection now. They are often better for the environment, too.
Factors That Improve or Reduce Sealer Quality
Not all sealers perform the same. Some things boost quality; others lower it.
Quality Boosters:
- **Resin Type:** High-quality acrylic or alkyd resins last longer.
- **Solid vs. Clear:** Sealers with some pigment (color) offer better UV protection than totally clear ones.
- **Manufacturer Reputation:** Trusted brands often use better ingredients.
Quality Reducers:
- **Low Price Only:** Very cheap sealers often use fewer protective ingredients. They might fail quickly.
- **Poor Preparation:** Even the best sealer fails if you put it on dirty, wet, or greasy wood. You must clean and prep the deck first.
- **Too Thick Application:** Applying the sealer too thick creates a film that can peel or bubble. Redwood likes to soak up the sealer, not wear it like paint.
User Experience and Use Cases
How you use the sealer affects your results. Think about your deck’s situation.
If your deck gets full, harsh afternoon sun every day, you need maximum UV protection. Pick a semi-transparent oil-based sealer for deep penetration.
If you live in a rainy area, focus on water repellency. Look for high-quality mildew resistance, too. Water-based sealers dry fast, which is great if rain threatens right after you finish sealing.
Application is usually easy. Most people use a good quality brush or a pump sprayer. Always follow the directions on the can for how much to use. You should see water bead up on the surface after a rain. If water soaks in, it is time to reseal!
10 Frequently Asked Questions (FAQ) About Redwood Deck Sealer
Q: How often should I reseal my redwood deck?
A: Most decks need resealing every one to three years. It depends on the weather and the sealer quality. Check if water still beads up.
Q: Can I use a sealer meant for pine on my redwood?
A: You can sometimes, but it is not the best idea. Redwood is naturally resistant to rot. Sealers made for softer woods might not bond perfectly or offer the exact protection redwood needs.
Q: Does a clear sealer protect as well as a tinted one?
A: No. Tinted or semi-transparent sealers protect better from the sun’s UV rays. Clear sealers let more UV light through, fading the wood faster.
Q: What is the biggest mistake people make when sealing?
A: The biggest mistake is poor prep work. You must clean the deck thoroughly and let it dry completely before applying any sealer.
Q: How long does it take for a sealer to dry?
A: Water-based sealers dry to the touch in a few hours. Oil-based sealers can take 24 to 48 hours before you can walk on them safely.
Q: Should I use a stain or a sealer?
A: A stain usually adds more color and sits on top more. A sealer is designed primarily to penetrate the wood and repel water while offering some color or UV protection.
Q: My redwood deck is already gray. Can I seal it now?
A: You should clean and brighten the wood first using a wood brightener product. Sealing gray wood traps the faded color underneath.
Q: What is “penetrating” sealer?
A: A penetrating sealer soaks deep into the wood fibers. It protects the wood from inside out, which resists peeling better than sealers that just coat the surface.
Q: Can I apply sealer when it is too hot outside?
A: Yes, applying sealer when it is very hot can make it dry too fast. This prevents it from soaking in properly. Check the can for the best temperature range.
Q: Is an oil-based sealer always better for redwood?
A: Oil-based sealers often offer deeper penetration, which many woodworkers prefer for redwood. However, modern water-based formulas provide excellent protection and easier cleanup.