10 Best Wood Deck Sealers 2022

Gareth Otwell Reviewed by Gareth Otwell | Last Updated:

SEAL-ONCE MARINE – ⭐ Best Overall Wood Deck Sealer

7614 by SEAL-ONCE

  • Color: Clear
  • Dimensions: 12 x 12 x 12 inches
SEAL-ONCE MARINE
  • Specially Formulated to be Applied Around & Over Fresh or Salt Water
  • Water-based, Low VOC, Non-toxic; Safe for People, Pets, Plants & Marine Life
  • Superior Nanotechnology Penetrates Deep, Coating Wood Fibers at the Cellular Level
  • Performs like an Oil-Based Sealer Without any Harmful Chemicals or Side Effects
  • Creates a Flexible, Breathable Barrier that Enhances, Stabilizes & Protects Wood

Ready Seal 512 5-Gallon Pail Natural Cedar Exterior Stain and – 👑 Premium Pick

512 by Ready Seal

  • Color: Natural Cedar
  • Weight: 1 pounds
  • Dimensions: 12 x 12 x 13.8 inches
Ready Seal 512 5-Gallon Pail Natural Cedar Exterior Stain and
  • Requires no primer. Ready Seal is darkest when first applied. It reaches its true color in approximately 14 days. Do not apply Ready Seal over painted or newly stained surfaces. Sealed surfaces inhibit penetration.
  • May be applied using sprayer, roller or brush onto the woods surface.
  • Requires no back brushing and will nerver leave runs, laps, or streaks.
  • Requires no wet-line application, the product will blend itself and can be applied in any temperature range for proper application.
  • Requires no diluting or thinning prior to spray applications.
  • Subject to or will include a PaintCare recycling fee in the following states: CT, or VT. Not available in CA.
  • Easy maintenance - no sanding or stripping required for re-application
  • "Goof Proof" application
  • No laps, runs or streaks
  • No back brushing
  • Apply in any temperature
  • Subject to or will include a PaintCare recycling fee in the following states: CA, OR, CT, VT

Thompsons WaterSeal TH.A21711-16 Advanced Natural Wood Protector

TH.A21711-16 by Thompson's Water Seal

  • Weight: 5.89 pounds
  • Dimensions: 7.8 x 4 x 11.8 inches
Thompsons WaterSeal TH.A21711-16 Advanced Natural Wood Protector
  • Long-Lasting Coating Resists Mildew Growth, UV Damage and Fading
  • One Day Project - Applies to both damp or dry wood in just one coat
  • Water-Based for Easy Soap and Water Clean Up
  • Waterproofer product
  • Use on decks, fences, exterior furniture and exterior wood
  • Maximum strength one coat waterproofer
  • Advanced protection against water damage
  • Exceptional, long lasting beading and waterproofing

THOMPSONS WATERSEAL 21802 VOC Wood Protector

21802 by Thompson's Water Seal

  • Weight: 9.1 pounds
  • Dimensions: 4.1 x 6.6 x 11 inches
THOMPSONS WATERSEAL 21802 VOC Wood Protector
  • Item Weight: 9.65 lb
  • Country of Origin: China
  • Brand name: Thompson's Water Seal
  • Item Dimensions: 4.1"L x 6.6"W x 11.0"H

THOMPSONS WATERSEAL TH.041841-16 Transparent Waterproofing Stain

TH.041841-16 by Thompson's Water Seal

  • Color: Acorn Brown
  • Weight: 100 pounds
  • Dimensions: 6.6 x 4.2 x 10.3 inches
  • Warranty: Satisfaction Guaranteed
THOMPSONS WATERSEAL TH.041841-16 Transparent Waterproofing Stain
  • Prevents Water Damage
  • Advanced Polymers Provide Fade Resistant Color
  • Coating Resists Mildew and UV Damage
  • Applies to Freshly Cleaned Damp or Dry Wood
  • Exceeds Industry Standard ASTM D-4446 for Waterproofing Wood

Eco Advance Wood Siloxane Waterproofer Concentrate – 💲 Best Budget Wood Deck Sealer

EAWOOD16CON by Eco Advance

  • Color: Dries Clear
  • Weight: 1 pounds
  • Dimensions: 2 x 4.1 x 6 inches
Eco Advance Wood Siloxane Waterproofer Concentrate
  • Liquid concentrate formula makes 1 gallon of commercial grade water proofer
  • Ideal for use on wood decking, wood fences, plywood, wood shingles, wood siding and much more
  • Protects against water damage, oil, stains, mold, mildew, de-icing salts, and pool/spa chemicals
  • Water-based, non-toxic, non-flammable formula does not harm landscape plantings
  • Vapor permeable (breathable) water proofer can be used on new wood

Rain Guard Water Sealers SP-8002 Wood Sealer Concentrate

SP-8002 by Rain Guard Water Sealers

  • Release date: 03/20/2017
  • Color: Clear Invisible
  • Weight: 2 pounds
  • Dimensions: 2 x 5 x 8 inches
Rain Guard Water Sealers SP-8002 Wood Sealer Concentrate
  • Prevents surface damage from rain, snow, ice with a satisfaction guarantee for up to five years
  • Does not alter surface appearance, does not leave a surface film and helps prevent efflorescence
  • Contains advanced UV stabilizers to ensure long lasting non-yellowing performance
  • Concentrate formula - easily mixed, save money and great for the environment
  • Apply a flood coat with a sprayer, brush or roller, no maintenance required and safe for People, Pets and Plants

Olympic Stain Maximum Deck Stain

411010 by Olympic Stain

  • Release date: 03/19/2018
  • Color: Cedar
  • Weight: 9.34 pounds
  • Warranty: Six Year Protection
Olympic Stain Maximum Deck Stain
  • Enhanced waterproofing protection to help make sure your wood is protected from cracking due to water

THOMPSONS WATERSEAL TH.042851-16 Semi-Transparent Waterproofing Stain

TH.042851-16 by Thompson's Water Seal

  • Color: Woodland Cedar
  • Weight: 5 pounds
  • Dimensions: 6.6 x 4.2 x 10.3 inches
  • Warranty: Satisfaction Guaranteed
THOMPSONS WATERSEAL TH.042851-16 Semi-Transparent Waterproofing Stain
  • Prevents Water Damage
  • Advanced Polymers Provide Fade Resistant Color
  • Coating Resists Mildew and UV Damage
  • Applies to Freshly Cleaned Damp or Dry Wood
  • Exceeds Industry Standard ASTM D-4446 for Waterproofing Wood

ToughTimber (Covers Up to 1

by Quest Chemicals

ToughTimber (Covers Up to 1
  • TOUGH TIMBER PREMIUM WOOD SEALER - High End/Industrial Grade Wood, Roof, and Deck Sealer proving protection for years to come! Making your Deck, Wood, Cedar Roof, Cedar Shingles, and Wood Fences water repellent. ToughTimber penetrates deep within the wood for BEST protection.
  • PREVENTS AGAINST MOLD AND MILDEW - Silane/Siloxane penetrates deep into the wood reducing wood water up-take by 95% protecting it against the elements and preserves the wood for longer periods of time. It is also stain resistant to oil, gas, and anti-freeze.
  • COVERS UP TO 1,000 SQFT (MAKES 5 GALLONS) - Same day, one coat application. Goes on cloudy and dries clear with a slight gloss sheen.
  • EASY TO USE - Mix this one gallon jug with 1-4 gallons water, depending on protection desires. Covers up to 1,000 sq ft.
  • OUR TOUGH TIMBER PROMISE: We know it works and we’re putting our money where our mouth is. If you don’t like it, just let us know and we will provide a full refund.

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