10 Best Wood Deck Sealer of December 2025

• 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.
• "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

Ready Seal

• Liquid concentrate formula makes 1 gallon of commercial grade water repellent
• Safe around plants, people and pets
• Eco-safe, low VOC, low odor formula is safe to walk on in less than 2 hours
• Ideal for use on wood decking, wood fences, plywood, wood shingles, wood siding and much more
• Vapor permeable (breathable) water repellent can be used on new wood

Eco Advance

• High quality product
• High durable product
• Manufactured in United States

OLYMPIC/PPG ARCHITECTURAL FIN

• 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

Rain Guard

• 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

Thompson's Water Seal

• Enhanced waterproofing protection to help make sure your wood is protected from cracking due to water

Olympic Stain

• 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.

Quest Chemicals

• 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

SEAL-ONCE

• 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

Thompson's Water Seal

• 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.
• FORTIFIED WITH ZINC NANO-PARTICLE TECHNOLOGY– It’s like sunscreen for your wood. Tiny zinc particles dispersed throughout the stain reflect damaging UV rays, preventing premature graying and color loss.
• EXTREMELY DURABLE, HIGH QUALITY RESINS – DEFY Composite Deck Sealer is made with the highest quality resins available that have better resistance to fading and darkening. The result is a quality sealer that typically lasts a season or two longer than competitive products.
• QUALITY THAT LASTS – DEFY Extreme Composite Deck Sealer is a premium-grade, clear deck sealer that is built to last. Keep your weathered composite deck, or fence looking great for longer by using DEFY.
• 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.

DEFY