Top 10 Best wood preservative outdoor in 2026

Last Updated - 6/26/2026

🏆Best Choice

GORILLA

Gorilla All Purpose Wood Filler, Natural Finish, 16 Ounce Tub (Pack of 1) - Water Resistant for Indoor or Outdoor Projects and Repairs

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•Gorilla tough: Gorilla Wood Filler is the go-to product for strong water resistant repairs on cracks, gouges and holes
•Natural finish: Our unique wood putty formula is easy to spread, allowing for a smooth natural finish
•Use indoors or outdoors: This wood filler putty is water resistant and does not shrink or crack, making it perfect for indoor or outdoor* projects and repairs
•Customizable: We want your wood repair to be the way you like it, so we made this wood filler paintable, stainable, and sandable
•Not just for looks: Gorilla wood putty filler also anchors nails and screws, making it a useful addition to your carpentry tools

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$9.39

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Thompson's

Thompson’s WaterSeal Multi-Surface Waterproofer Stain, Clear, 1 Gallon

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•WATERPROOFING STAIN – Bring out the beauty of your outdoors with Thompson’s WaterSeal Clear Multi-Purpose Waterproof Stain. Proven to waterproof concrete, brick, exterior wood and other exterior surfaces.
•CLEAR STAIN – This outdoor wood stain and sealer provides a clear finish. It will hide the grain, but still allow the texture to show. It provides complete protection while adding enhancing the natural color.
•FADE RESISTANT FINISH – The advanced polymers in this outdoor wood and deck stain deliver fade-resistant color so it stays looking great year-round. The coating resists UV damage, so you can apply with confidence.
•EASY TO USE – Whether you’re refinishing an existing fence or putting the finishing touches on a new patio, this concrete, brick, wood sealer is easy to apply. Clean the surface thoroughly prior to use for best results.
•THOMPSON’S – Protecting & maintaining all your exterior surfaces, can easily be simplified if you know where to start. Thompson’s WaterSeal is here to take the edge off, thanks to our one-coat products, informative how-to guides & decades of expertise.

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$17.97

$19.99

-10%

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Ready Seal

Ready Seal 512 5-Gallon Pail Natural Cedar Exterior Stain and Sealer for Wood

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•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.
•"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

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$179.99

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OLYMPIC

Olympic WaterGuard 11 oz. Clear Exterior Waterproofing Wood Sealer Spray

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•Ready to use clear sealant and waterproofer
•Perfect for new wood, pressure-treated wood, weathered wood and wood with a weathered clear or semi-transparent stain
•Durable sealant that provides waterproofing protection
•Repels water
•Provides SUNBLOCK UV protection
•Provides a resistant coating
•Penetrates the surface for protection
•Clean up with just soap and water

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$6.48

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Rust-Oleum

Rust-Oleum 1904A Wolman (Woodlife) CopperCoat Green Wood Preservative-Below Ground, Quart

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•EPA-registered, insecticidal exterior wood preservative prevents attacks from termites and other wood boring insects while protecting against rot and decay
•Transparent, natural green color
•Designed to protect exterior untreated or pressure-treated wood in below ground, ground contact, fresh water contact, or above ground installations
•Ideal for docks and piers, fence posts, landscape timbers, other exterior wood exposed to moisture, weather, or wood destroying insects
•Highly recommended for pressure treated wood end cut protection

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$20.83

$25.17

-17%

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Rust-Oleum

Rust-Oleum WOODLIFE 902 Wolman Classic Clear Wood Preservative-Above Ground, Quart, 0.95 Liters

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•EPA-registered, fungicidal exterior wood preservative and water repellent
•100% clear formula shows natural wood color and allows for natural graying
•Paintable and stainable after 24 hours, great as a primer to extend top-coat service life on any exterior wood intended to be painted or stained
•Preserves decks, porches, fences, siding, outdoor furniture, playsets, virtually all wood items exposed to weather and rain
•Can be applied immediately to new wood

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$15.99

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Guardsman

Guardsman Weather Defense Outdoor Wood Furniture Protector - 10 oz - Repels Moisture and Stains - 461900

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•Repels moisture as it enhances wood's natural beauty. Protect your outdoor furniture from mother nature and protect your investment.
•Repels common outdoor stains, making cleanup easier. No need to worry about the occasional spill during a backyard barbecue, or popsicles on a hot summer day.
•Forms and invisible barrier against mold, mildew and fungi, keeping your outdoor furniture looking its best and providing you with an inviting outdoor living space.
•Great for all types of wood - including teak and cedar.
•Guardsman Outdoor Wood Protector forms a micro-thin film to prevent mildew and fungi spores form attaching to the treated surfaces.

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$21.96

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Tenino

Tenino Copper Naphthenate 17% (2% as Metal) Double Strength - Highest Concentration Allowed - 1 Gallon - Wood Preservative

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Ready-to-Use Copper Naphthenate 17% (contains 2% copper as metal), meets the AWPA M4 Standard
•Required by building codes (IBC 2303.1.9 & IRC R317.1.1) on end-cuts of all pressure treated lumber
•Low VOC (<350g/L) and 100% domestically sourced from recycled copper and reclaimed by-products.
•Labeled for General Use, and wood treated with Tenino maybe discarded in local landfill
•Water repellant and both toxic and repellant to termites and other wood destroying insect

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$64.95

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Green Products Inc.

Green Products Co. 30001 Copper Green Wood Preservative, 1-Gallon

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•Seals The Wood
•Protects Against Mold And Mildew
•Kills Off Harmful Insects
•Dip soaking or pressure impregnation of COPPER-GREEN will result in deeper penetration resulting in longer preservation of treatable species
•The copper in COPPER-GREEN reacts with the cellulose of wood. As a result it is not easily lost from the wood by leaching
•This formulation extends the service life of wood products
•For exterior applications only

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$33.99

$47.88

-29%

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Rust-Oleum

Rust-Oleum 01901 Coppercoat Wood Preservative, 0.88-Gallon, Green

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•EPA-registered, insecticidal preservative prohibits termite damage, rot and decay
•Inhibits surface growth of fungal organisms: mold, mildew and staining fungi
•Paintable and stainable; imparts a transparent green color that naturally fades over time
•Designed for protection of deck or porch floor end cuts

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$45.23

$48.42

-7%

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