With so many Best Deck Water Sealer brands on the market – from prominent names like Thompson’s,OLYMPIC,Seal-Once,Rain Guard Water Sealers to smaller manufacturers – making the right choice can feel overwhelming. But we’re here to help simplify your search for the best product.
We extensively tested and evaluated dozens of top-rated Best Deck Water Sealer across various price points, spending over 100 hours comparing the contenders side-by-side. Based on our in-depth first-hand research, we compiled this list of stand-out Best Deck Water Sealer to consider. Our top recommendation is Thompson’s Best Deck Water Sealer for its uncompromising quality and performance.
Below you’ll discover more of our favorite Best Deck Water Sealer picks. And be sure to consult our buying guide for expert insights on selecting the ideal product for your individual needs and budget. With us guiding your decision, you can shop confidently knowing you’ve chosen an exceptional Best Deck Water Sealer you’ll truly love.
Premium Pick
Thompson’s WaterSeal Multi-Surface Waterproofer Stain, Clear, 1 Gallon
Budget Pick
Olympic Stain Smartguard Concentrated Multi-Surface Sealant, Clear, 15oz
Top 10 Best Deck Water Sealer
We researched and compared the top products in the Best Deck Water Sealer category to provide you with these recommendations.
1. Thompson’s WaterSeal Multi-Surface Waterproofer Stain, Clear, 1 Gallon
- WATERPROOFING STAIN Bring out the beauty of your outdoors with Thompsons 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 youre 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.
- THOMPSONS Protecting & maintaining all your exterior surfaces, can easily be simplified if you know where to start. Thompsons WaterSeal is here to take the edge off, thanks to our one-coat products, informative how-to guides & decades of expertise.
2. Thompson's WaterSeal Clear Wood Sealer, Clear, 1 Gallon
- Year-Round Protection in Just One Coat
- Helps Prevent Water Damage
- Exceeds Industry Standard ASTM-D4446 for Waterproofing Wood
- Crystal-clear sealer and sunblock protects wood and prevents yellowing
3. Olympic Stain Smartguard Concentrated Multi-Surface Sealant, Clear, 15oz
- Stain Your Deck Quickly And Easily - Olympic Smart guard is a patent-pending deck stain product that allows you to simply spray on the sealant eliminating the need for back-brushing your deck.
- Simple Stain Process - To apply Olympic SmartGuard Deck Sealant simply pour the pouch into a deck sprayer, add 2 gallons of water, and then spray over your deck - it works on traditional wood decks, concrete, and even composite decking!
- Quick Dry - Dries in 1 hour so you can entertain or spend time outdoors with less hassle and less disruption. Apply this deck sealant quickly and get back to enjoying your day.
- Use Even After Rain - Can be applied after cleaning or rain ensuring you get to have fun on your deck as quick as possible
- Durable - Strong durability and waterproofing protection makes Olympic Smart Guard the smart choice for any homeowner who wants to seal their wood or composite deck quickly and still enjoy the outdoors
- Multi-Surface Use - While many deck sealants only work on wood, Olympic Smart Guard works as a sealant on Wood Decks, Concrete Patios, Masonry, and even weathered Composite Decks
- A Trusted Name In Deck Stain Technology - The Olympic brand has been trusted to provide quality results since 1938. Its history of excellence and expertise has made Olympic Stains a category leader with a reputation for delivering innovation and durability at an affordable price. Gorgeous results are always guaranteed with Olympic Stains. With a full range of exterior stains, resurfaces and wood cleaners, we have the products you need to complete your next wood staining project right.
4. SEAL-ONCE MARINE - 1 Gallon Penetrating Wood Sealer, Waterproofer & Stain. Water-Based, Ultra-low
- 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.
5. Thompson’s WaterSeal Transparent Waterproofing Wood Stain and Sealer, Natural Cedar, 1 Gallon
- WATERPROOFING STAIN Bring out the beauty of your outdoor wood with Thompsons WaterSeal Transparent Waterproofing Wood Stain. Along with adding smooth color, its 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 youre 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 Thompsons Waterproofing Exterior Wood Stain exceeds Industry Standard ASTM D-4446 for waterproofing wood.
6. Rain Guard Wood Sealer Concentrate SP-8001 | Makes 1 Gallon | Protects Wood from Water Damage,
- WATER-REPELLENT WOOD CARE: This penetrating wood treatment is formulated to help create a hydrophobic barrier that repels water and routine surface contaminants, supporting long-term wood appearance across outdoor conditions.
- NATURAL, NO-GLOSS FINISH: Provides a clear, natural look that maintains woods aesthetic while allowing it to weather and age naturally over time. Ideal for those who prefer a subtle, low-sheen finish.
- CLEAR, LOW-ODOR, VOC-CONSCIOUS FORMULA: Crafted with a water-based, low-odor blend mindful of VOC levels, making it suitable for various application environments without overwhelming fumes.
- EASY APPLICATION & BROAD COVERAGE: Covers up to approximately 200 sq. ft. per gallon and is designed for a smooth, straightforward application processwhether using a sprayer, brush, or roller.
- INDOOR & OUTDOOR WOOD USE: Versatile enough for decks, fences, siding, and wood furniture in both indoor and outdoor settings, offering consistent performance across multiple project types.
7. Olympic Waterguard 1 gal. Clear Multi-Surface Waterproofing Sealer
- Ready to use clear sealant and waterproofer
- Provides protection on multiple exterior surfaces, including: exterior decks, fences, siding, wooden furniture and structures, concrete, brick, stucco, steps, sidewalks, patios and more
- Durable sealant that provides waterproofing protection
- Penetrates and protects against water damage
- Provides resistant coating
- Water based stain features easy cleanup with soap and water
- Normally dries in 12-24 hours when applied at 50F to 85F
- Allows wood to weather and gray naturally
8. Thompson’s WaterSeal Semi-Transparent Waterproofing Wood Stain and Sealer, Natural Cedar, 1 Gallon
- WATERPROOFING STAIN Bring out the beauty of your outdoor wood with Thompsons WaterSeal Semi-Transparent Waterproofing Wood Stain. Along with adding lightly tinted color, its 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 youre 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 Thompsons Waterproofing Exterior Wood Stain exceeds Industry Standard ASTM D-4446 for waterproofing wood.
9. Thompson’s WaterSeal Semi-Transparent Waterproofing Wood Stain and Sealer, Chestnut Brown, 1
- WATERPROOFING STAIN Bring out the beauty of your outdoor wood with Thompsons WaterSeal Semi-Transparent Waterproofing Wood Stain. Along with adding lightly tinted color, its 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 youre 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 Thompsons Waterproofing Exterior Wood Stain exceeds Industry Standard ASTM D-4446 for waterproofing wood.
10. SEAL-ONCE NANO+POLY Penetrating Wood Sealer with Polyurethane - 1 Gallon. Water-based, Low-VOC,
- 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.
Peter
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