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19 Best Rated Water Sealer For Decks 2023

There are two kinds of deck sealing: liquid and powder. Both types serve the same purpose: preventing rain, snow, and other liquids from penetrating the wood. The only difference between the two is that with liquid sealers, you pour the solution onto the deck and spread it with a brush. With powder, you apply the product to the deck, let it dry, and then wipe off any residue with a rag or cloth. Both types have pros and cons.

If you’re the DIY type, then liquid is the best option. It’s less messy and easier to apply than powder, and it dries quickly. But it also requires some investment. The solution (usually made up of water, mildewcide, and/or preservatives) is costly to buy, and since you have to pour it onto the deck, you have to have a big enough container or pitcher to do the job. For multiple coats, you'll need to buy one of the large bottles. That being said, if you want a quick-and-easy DIY solution, then you’ll need to go for the powder. It’s just as fast and easy as the liquid, but doesn’t require as much prep work.

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Lumia Shaffer
  Mar 28, 2023 6:26 PM
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Comparison Table

Showing  1 - 10  in  19 results
RANKING LIST  |  SORT BY SCORES
1
Thompsons Water Seal 24101 Clear Multi-Surface Waterproofer, 1-Gallon
Thompsons Water Seal 24101 Clear Multi-Surface Waterproofer, 1-Gallon
View on Amazon
  • SCORE
    9.4
    AI Score

    Reviews are based on big data aggregated from sales pages and product buyer reviews. All ranking arrangements are automatically AI-driven according to product buyer reviews.

  • Brand
    Thompson's Water Seal
  • Prevents water damage
  • Use on decks, fences, brick patios, concrete driveways and exterior surfacesmore
2
Waterlox Original Sealer Finish, 350 VOC, Quart, 32 Fl Oz
Waterlox Original Sealer Finish, 350 VOC, Quart, 32 Fl Oz
View on Amazon
  • SCORE
    9.2
    AI Score

    Reviews are based on big data aggregated from sales pages and product buyer reviews. All ranking arrangements are automatically AI-driven according to product buyer reviews.

  • Brand
    Waterlox
  • Our oldest and truly “original” product since 1911
  • Penetrates and waterproofs when used as a finishing system in multiple coats on it’s own or in conjunction with Waterlox Original Satin Finish or Waterlox Original High Gloss Finishmore
3
Liquid Rubber Textured Polyurethane Deck Coating - Solar Protection Deck Sealant, Non-Toxic Multi-Surface Waterproofing Membrane, Easy to Apply, Stone Gray, 1 Gallon
Liquid Rubber Textured Polyurethane Deck Coating - Solar Protection Deck Sealant, Non-Toxic Multi-Surface Waterproofing Membrane, Easy to Apply, Stone Gray, 1 Gallon
View on Amazon
  • SCORE
    9.0
    AI Score

    Reviews are based on big data aggregated from sales pages and product buyer reviews. All ranking arrangements are automatically AI-driven according to product buyer reviews.

  • Brand
    L R
  • COVERAGE - 40 square feet per gallon, final coverage after 3-4 generous coats. 30 square feet per gallon for high traffic areas (4-5 generous coats)
  • APPLICATION - Avoid hot, intense direct sunlight during application. Apply above 10 degrees Celsius (50 degrees Fahrenheit). Do not apply later in the day if dew is forecastmore
4
Thompsons Water Seal 24111 1.2-Gallon Clear Low VOC Water Sealer for Exterior Use
Thompsons Water Seal 24111 1.2-Gallon Clear Low VOC Water Sealer for Exterior Use
View on Amazon
  • SCORE
    9.0
    AI Score

    Reviews are based on big data aggregated from sales pages and product buyer reviews. All ranking arrangements are automatically AI-driven according to product buyer reviews.

  • Brand
    Thompson's Water Seal
  • Prevents water damage
  • Exterior use onlymore
5
STORM SYSTEM Storm Protector Penetrating Sealer & Stain Protector - Deck Protector, Fence Protector,1 Gallon, Sienna
STORM SYSTEM Storm Protector Penetrating Sealer & Stain Protector - Deck Protector, Fence Protector,1 Gallon, Sienna
View on Amazon
  • SCORE
    8.8
    AI Score

    Reviews are based on big data aggregated from sales pages and product buyer reviews. All ranking arrangements are automatically AI-driven according to product buyer reviews.

  • Brand
    Storm System
  • Applies easily with brush, roller, or spray application. Lap-Free Application & UV Protection
  • Great for Decks, Fences, Siding, and other Wood Substrates. Can be used as a wood fence protector or any other wood substrate protector.more
6
All Purpose Concrete, Brick & Stone Sealer, Clear Penetrating Water Sealant for Porous, Exterior, Brick, Concrete, Stone, Cultured Stone, Sandstone, Limestone & Granite Siloxane Sealer, 1 Gallon
All Purpose Concrete, Brick & Stone Sealer, Clear Penetrating Water Sealant for Porous, Exterior, Brick, Concrete, Stone, Cultured Stone, Sandstone, Limestone & Granite Siloxane Sealer, 1 Gallon
View on Amazon
  • SCORE
    8.8
    AI Score

    Reviews are based on big data aggregated from sales pages and product buyer reviews. All ranking arrangements are automatically AI-driven according to product buyer reviews.

  • Brand
    MasonryDefender
  • Water-Based - Soap & Water Cleanup, Low Odor
  • Waterproofs and Protects Masonry & Concrete Surfaces from Water Damage & Freeze/Thaw Damagemore
7
Rain Guard Water Sealers-ConcreteSealer-Penetrating Water Repellent Protection for All Porous Concrete SurfacesWaterBased Silane/Siloxane Sealant Natural Finish-Concentrate Makes 5Gal,Clear Invisible
Rain Guard Water Sealers-ConcreteSealer-Penetrating Water Repellent Protection for All Porous Concrete SurfacesWaterBased Silane/Siloxane Sealant Natural Finish-Concentrate Makes 5Gal,Clear Invisible
View on Amazon
  • SCORE
    8.8
    AI Score

    Reviews are based on big data aggregated from sales pages and product buyer reviews. All ranking arrangements are automatically AI-driven according to product buyer reviews.

  • Brand
    Rain Guard Water Sealers
  • RAIN GUARD: Where innovation meets sustainability! Since 1969, Rainguard Water Sealers has been manufacturing architectural and industrial coatings designed to “wrap” the exterior of buildings and structures. Rainguard now brings this same technology to consumers in our ready-to-use and concentrated DIY formulations, providing a variety of high-performance sealers for your home. Eco-friendly and non-toxic, all our waterproofing solutions are safe to use around people, pets, and plants.
  • SUPER CONCENTRATED FORMULATION: Cost-effective, super concentrated sealing solutions! Rainguard Water Sealers Concrete Sealer Super Concentrate offers the best value and simple mixing. Pour the quart of concentrate into a 5-gallon pail and add clean water. Mix lightly to disperse the material. Five gallons of this impregnating concrete waterproofer coats, seals, and protects up to 1000 square feet. Try Rainguard Water Sealers' ready-to-use formulations for ease and convenience.more
8
RAIN Guard PRO-CR-0356 Micro-Seal 1 Gal Clear Penetrating Silane Siloxane Professional Grade Water Repellent Sealer – Water Based Concrete Sealer, 10 Yr Warranty
RAIN Guard PRO-CR-0356 Micro-Seal 1 Gal Clear Penetrating Silane Siloxane Professional Grade Water Repellent Sealer – Water Based Concrete Sealer, 10 Yr Warranty
View on Amazon
  • SCORE
    8.8
    AI Score

    Reviews are based on big data aggregated from sales pages and product buyer reviews. All ranking arrangements are automatically AI-driven according to product buyer reviews.

  • Brand
    RAIN GUARD PRO
  • Water Based Concrete Sealer: Restore, protect and extend the life of any masonry horizontal or vertical surface with a high-performance hydrophobic coating
  • Water Repellent: 100% penetrating coating provides excellent resistance to water, salt spray, ice removal agents and wind driven rainmore
9
Low Gloss Patio Paver Sealer, 1 gal - Clear Water-Based Sealant for Natural Stone Surfaces
Low Gloss Patio Paver Sealer, 1 gal - Clear Water-Based Sealant for Natural Stone Surfaces
View on Amazon
  • SCORE
    8.6
    AI Score

    Reviews are based on big data aggregated from sales pages and product buyer reviews. All ranking arrangements are automatically AI-driven according to product buyer reviews.

  • Brand
    MasonryDefender
  • Invisible Waterproofing Protection - Milky white in appearance when first applied, and dries clear
  • Ready to Use - No Mixing Required - Easy to Apply with a Pump Up Sprayermore
10
DEFY Crystal Clear Composite Deck Waterproofing Sealer, 1 Gallon
DEFY Crystal Clear Composite Deck Waterproofing Sealer, 1 Gallon
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  • SCORE
    8.6
    AI Score

    Reviews are based on big data aggregated from sales pages and product buyer reviews. All ranking arrangements are automatically AI-driven according to product buyer reviews.

  • Brand
    DEFY
  • WATER-BASED, CLEAR COMPOSITE DECK SEALER – This water based, clear wood and deck sealer protects composite wood from the harmful effects of the sun, while adding little to no change to the natural look of your composite deck.
  • EASY TO MAINTAIN – When it’s time to do a maintenance coat, there’s no need to strip the surface. Make sure the surface is clean, then apply a single maintenance coat of DEFY Composite Waterproofing Sealer.more

Last update on 2023-03-28 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API

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Lumia Shaffer
Lumia Shaffer

I'm Lumia Shaffer! I'm a Kirby Research author, with a passion for writing, I've researched and published many in-depth product research articles!
My Twitter: https://twitter.com/KirbyLumias