10 Best Deck Sealant of December 2025

• 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

• 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

• 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

• No tooling required, levels itself
• Water immersible after cure
• Able to bridge gaps up to 1.5 in. wide
• Paintable, stainable, sandable
• Flexible and durable

SIKA

• Stain Your Deck Quickly And Easily - Olympic Smart guard is a patent-pending deck stain product that allows you to simply spray on the sealant eliminating the need for back-brushing your deck.
• Simple Stain Process - To apply Olympic SmartGuard Deck Sealant simply pour the pouch into a deck sprayer, add 2 gallons of water, and then spray over your deck - it works on traditional wood decks, concrete, and even composite decking!
• Quick Dry - Dries in 1 hour so you can entertain or spend time outdoors with less hassle and less disruption. Apply this deck sealant quickly and get back to enjoying your day.
• Use Even After Rain - Can be applied after cleaning or rain ensuring you get to have fun on your deck as quick as possible
• Durable - Strong durability and waterproofing protection makes Olympic Smart Guard the smart choice for any homeowner who wants to seal their wood or composite deck quickly and still enjoy the outdoors
• Multi-Surface Use - While many deck sealants only work on wood, Olympic Smart Guard works as a sealant on Wood Decks, Concrete Patios, Masonry, and even weathered Composite Decks
• A Trusted Name In Deck Stain Technology - The Olympic brand has been trusted to provide quality results since 1938. Its history of excellence and expertise has made Olympic Stains a category leader with a reputation for delivering innovation and durability at an affordable price. Gorgeous results are always guaranteed with Olympic Stains. With a full range of exterior stains, resurfaces and wood cleaners, we have the products you need to complete your next wood staining project right.

Olympic Stain

• 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

• 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

Ready Seal

• UV RESISTANCE - Our Deck and Dock Coating has excellent solar reflectivity and UV stability; reduces heat transfer by up to 35% compared to regular paint
• PROTECTIVE FINISH FOR - Wood, concrete, decks, docks, walls, fences and more for a seamless membrane!
• EASY TO APPLY - Use a brush, roller, or paint sprayer for a seamless and fully adhered membrane. Designed as a stand-alone coating but can also be used with Liquid Rubber Seam Tape
• ENVIRONMENTALLY FRIENDLY - Liquid Rubber Deck and Dock Coating is water based, non-flammable, and non-toxic, containing no solvents or VOC's. Safe for humans and pets alike, can be used indoors and outdoors with no special breathing apparatus
• COVERAGE - Apply a minimum final thickness of 1 gallon/40 square feet (3.7 sq m). This should require 3-4 heavy coats. Heavy traffic areas require 1 gallon/30 square feet (2.8 sq m)

L R

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

Olympic Stain

• Sandable, silicone based deck sealant
• No priming necessary
• Sandable and especially designed for teak deck seams

Boatlife