Top 10 Wood Deck Sealers (April 2024)

SEAL-ONCE MARINE – ⭐ Best Overall Wood Deck Sealer

7614 by SEAL-ONCE

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

512 by Ready Seal

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

TH.A21711-16 by Thompson's Water Seal

21802 by Thompson's Water Seal

TH.041841-16 by Thompson's Water Seal

EAWOOD16CON by Eco Advance

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

SP-8002 by Rain Guard Water Sealers

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

411010 by Olympic Stain

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

TH.042851-16 by Thompson's Water Seal

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.