10 Best Exterior Wood 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

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

OLYMPIC/PPG ARCHITECTURAL FIN

• Ready to use commercial grade formula can be applied using a standard garden pump sprayer
• Safe around plants, people and pets
• , 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

• 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

Thompson's Water Seal

• Contains UV blockers to reduce the sun's graying and fading effects
• Forms a protective barrier against rain and moisture
• Special oils allow the finish to expand and contract with the wood as seasons and temperatures change
• Ideal for use on doors, windows, trim, bathroom cabinets, bar tops, kitchen countertops, outdoor furniture
• Crystal clear finish is ideal for use over light-colored woods and stains. Dries quickly and cleans up easily with warm water
• Spar urethane
• Specially formulated protective clear finish for exterior or interior wood that is exposed to sunlight, water or temperature changes
• Contain UV blockers to reduce the sun's graying and fading effects
• Forms a protective barrier against rain and moisture
• Special oils allow the finish to expand and contract with the wood as seasons and temperature changes
• Spar urethane
• Specially formulated protective clear finish for exterior or interior wood that is exposed to sunlight, water or temperature changes
• Contain UV blockers to reduce the sun's graying and fading effects
• Forms a protective barrier against rain and moisture
• Special oils allow the finish to expand and contract with the wood as seasons and temperature changes

Minwax

• Ideal for use on exterior wood surfaces above the water line, including trim, railings and wood furniture
• Oil-based formula expands and contracts with changing weather conditions
• Dries to the touch in 2 hours and covers up to 150 sq. ft.
• Durable coating provides excellent resistance to UV, salt and mildew
• Crystal-clear varnish leaves a beautiful gloss finish with maximum protection
• UV resistant
• Salt and mildew resistant
• Expands and contracts with changing weather conditions
• Twice as durable as conventional wood finishes
• This item is not for sale in Catalina Island

Rust-Oleum

• 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

• Ideal for use on exterior wood including decks, siding, fences and more
• Unique penetrating oil hardens in the wood, not on the wood for long-lasting protection
• Allow at least 8 hours to dry before light use; 1 quart covers up to 170 sq ft
• Provides UV and mildew protection, resists warping and swelling due to changes in weather, and transforms wood to become water repellent
• Will not crack, chip or peel creating a long-lasting finish

Rust-Oleum

• 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

• 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