Below is the table which shows the top 6 best deck water sealer 2018. Each and every deck water sealer is chosen by our specialist reviewers.

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# 1 - Thompsons Waterseal Th.a21711-16 Advanced Natural Wood Protector, Gallon

Thompson's WaterSeal Advanced Natural Wood Protector - Specially formulated for wood, Thompson's WaterSeal Advanced Natural Wood Protector provides one-coat maximum strength protection with a coating that resists mildew and UV damage, allowing your wood to maintain its natural color. With a patented formula, this advanced waterproofer enables you to clean and treat in one day and to apply immediately to new pressure-treated wood.


  • Use on decks, fences, exterior furniture and exterior wood
  • Maximum strength one coat Waterproofer
  • Advanced protection against water damage
  • Exceptional, long lasting beading and waterproofing
  • Helps maintain wood natural Color
  • Waterproofer product


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# 2 - Thompsons Waterseal 041811-16 Transparent Stain, Gold

Use on decks, fences, outdoor furniture and exterior wood. Prevents water damage. Advanced polymers provide fade resistant color. Coating resists mildew and UV damage. Applies to freshly cleaned damp or dry wood. Exceeds industry standard ASTM D-4446. Covers about 150 to 400 sq ft per gallon. Can be applied by paint pad, brush, sprayer and roller. 2 hour dry time.


  • Color: Harvest Gold
  • Transparent
  • Wood sealer and stain, all in one
  • Prevents water damage
  • Use on decks and fences, outdoor furniture, exterior wood


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# 3 - Eco Advance Eawod128pd Wood Siloxane Waterproofer Ready-to-use-1 Gallon Exterior Water Proofer

One Gallon ready-to-use commercial-grade water proofer.  This easy-to-use spray-on formula provides long-lasting protection for your exterior wood projects including:  Decking, wood fence, gondolas / pergolas, plywood, wood siding, wood shingles, etc. This product differs from most water proofers because of its vapor transmission abilities which allow for long-term product and substrate performance.  This allows substrates to still cure and prevents moisture from being trapped which can lead to a rapid degradation of the substrate.


  • Ready to use commercial grade formula can be applied using a standard garden pump sprayer
  • Safe around plants, people and pets
  • Eco-friendly, 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 proofer can be used on new wood


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# 4 - Thompsons Waterseal 041851-16 Transparent Stain, Cedar

Thompson's WaterSeal waterproofing stain - transparent provides complete outdoor wood protection. It waterproofs long after the initial water beading is gone.


  • Prevents water damage
  • Advanced polymers provide fade resistant Color
  • Coating resists mildew and UV damage
  • Applies freshly cleaned Damp or dry wood
  • Exceeds industry standard ASTM D-4446 for waterproofing wood


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# 5 - Defy Crystal Clear Composite Deck Waterproofing Sealer, 1 Gallon

Defy Composite Deck Waterproofing Sealer 1 Gallon