20 Best Sealer For Exterior Wood (2023 Updated)

A semitransparent stain and sealer in one. It is a unique blend of oils, quality resins and finely ground pigments that penetrate deeply to protect and preserve the wood from the elements. Effective on all types of wood on premium-grade lumbers, including western red cedar, Douglas fir, cypress, spruce and redwoods.

Provides 3-way protection for exterior wood. Penetrates deep into wood to protect against wood rot and mildew. Provides waterproofing protection so wood won’t warp, crack, shrink or split from moisture.

Also contains a UV absorber to retard the fading and drying that occurs with sunlight exposure. Can be applied over severely weathered, painted, or stained surfaces and is paintable and stainable with oil-based products.

Meets VOC requirements in most areas.

SEAL-ONCE has been leading the innovation in the use of nanotechnology to create long-lasting, Eco-safe wood sealers, waterproofing & tinted wood stains since 2005. This exclusive MARINE formula is made for use on wood in high-moisture environments near ponds, lakes, rivers & oceans.

MARINE provides superior, long-lasting protection against water damage & decay in these locations. It is a great investment to enhance & extend the useful life of boat docks, piers, retaining walls, wood decks and outdoor furniture.

Anchorseal has been the sealer of choice for protection against end grain checking. Lumbermen, turners and furniture builders alike have used Anchorseal for years to protect their wood investment. You don’t mess with that kind of track record unless you’re committed to improving an already great product.

Anchorseal2 is a hybrid sealer that contains renewable, natural ingredients so there is less petroleum based material used in production. The result is a greener, more economical product that drips less, sticks better, has improved stability and, best yet, better than the original Anchorseal.

Now, new and improved Anchorseal 2 is the choice for prevention of end grain checking. – New and improved – The sealer of choice – Protects against end grain checking – Protect your wood investment – Nearly 30 years of experience in making this product.

Watco Exterior Wood is a unique penetrating oil that hardens in the wood, not on the wood. New, old, or pressure treated wood becomes water repellent, provides UV and mildew protection, and resists warping and swelling caused by changes in weather.

Durable and easy to use, WATCO Exterior Wood Finish is great for decks, siding, fences and more. Please read product labels for additional directions and precautions before using. Stain, Seals, & Protects in one easy step.

Will not crack, chip, or peel. For best results flood surface and allow to penetrate for 30 minutes. Reapply, allowing an additional 15 minutes of penetration.

Formulated for application over bare wood. Seals wood grain and is easy to sand. Designed for use on unstained, bare wood, floors, furniture, doors and cabinets. Can be topcoated with any Minwax oil or water based polyurethane finish.

Quick dry-allows for sealing & topcoat in 1 day. Coverage: 125 sq. ft. per quart.

Thompsons WaterSeal Clear Wood Sealer provides long-lasting exterior wood protection. Clear sealer enhances and maintains the woods natural color.

WaterGuard for Wood Waterproofing Clear Sealant offers convenience and value. A penetrating clear sealer that protects the wood while allowing the wood grain to show. Perfect for multiple wood surfaces.

Choose Thompson’s WaterSeal 1 Gallon Transparent Wood Sealer in Natural Cedar for your next project. This exterior wood stain and wood protector adds medium color to your wood surface and allows some wood grain and texture to show.

Prevent water damage with a coating that resists mildew and UV damage while providing a fade and scuff resistant color. Get easy-to-apply protection in just one coat.

EZ Wood Sealer 2018 is used to seal all types of raw wood prior to painting and varnishing. The sealer acts as a moisture barrier layer to prevent peeling and excessive absorption of vehicle from topside primers, paints, or varnishes.

It uniformly seals and satisfies the absorbency of all woods including teak and mahogany. After applying EZ Wood Sealer, lightly sand to a smooth surface before topside priming, varnishing, or painting.

EZ Wood Sealer can be used under all Pettit, Z-Spar, and Shipendec topside primers, varnishes and paint finishes.

Thompson’s WaterSeal Waterproofing Stain provides complete outdoor wood protection. It waterproofs long after the initial water beading is gone. One coat protects; 3 years on decks, 4 years on decks & fences.

For use on decks and fences, outdoor furniture and exterior wood.

Key Features Requires no primer May be sprayed, rolled or brushed onto the wood surface Requires no diluting or thinning prior to spray applications Requires no back-brushing and Ready Age Group: adult.

WaterGuard for Wood Waterproofing Clear Sealant offers convenience and value. A penetrating clear sealer that protects the wood while allowing the wood grain to show. Perfect for multiple wood surfaces.

Outdoor Oil is an exterior-rated penetrating linseed oil. General Finishes Outdoor Oil is an exterior-rated penetrating linseed oil. It contains UV stabilizers, mildew prohibitors, and twice the oil contained in competing brands.

It can be used by itself, over any stain, and on pressure treated wood.

Natural Clear Transparent Waterproofing Wood Finish is ideal for decks, fences, siding, and outdoor furniture, where a clear or wood-toned finish is desired. Its penetrating formula with water clean-up provides durability.

Also easy application.

Features. Professional grade. A semitransparent stain and sealer in one. It is a unique blend of oils quality resins and finely ground pigments that penetrate deeply to protect and preserve the wood from the elements.

Effective on all types of wood on premium-grade lumbers including western red cedar douglas fir cypress spruce and redwoodsSpecifications. Style: Golden. Capacity: 5 gal. Weight: 37 lbs.

Juniper is nature’s strongest natural wood preservative. Vermont Natural Coatings Water Proofer infused with juniper stabilizes and seals wood from the inside, extending wood life by controlling moisture flow to reduce mold, mildew and decay.

Penetrating Water Proofer is clear and leaves no topcoat, allowing the wood’s color to age naturally.

Deep Tint Base Solid Color Waterproofing Stain and Sealer resists the growth of mildew to maintain a pristine appearance. This stain protects your exterior wood surfaces from harsh weather conditions.

It can be applied easily with a brush, roller or sprayer.

White Tint Base Solid Color Waterproofing Stain and Sealer resists the growth of mildew to maintain a pristine appearance. This stain protects your exterior wood surfaces from harsh weather conditions.

It is great for use in large outdoor projects as the formula applies easily using a sprayer or roller.

An unusual combination of oils and urethanes, Seal-A-Cell Clear is the ideal solution for achieving a natural look on beautiful woods that are not stained. Available in Pint, Quarts and Gallons. The oils penetrate deep within the wood to highlight the warm natural look, while the urethane ensures a deep hardness.

Follow with multiple coats of Arm-R-Seal Urethane topcoat. Seal-A-Cell can be wiped on or applied with a foam brush.