Best deck sealers – Top 8 of 2020

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We checked out thousands reviews, and put together a list of the top sellers. Check out the top deck sealers below.


SaleNo. 1
Ready Seal 512 5-Gallon Pail Natural Cedar Exterior Stain and Sealer for Wood
500 Reviews
Ready Seal 512 5-Gallon Pail Natural Cedar Exterior Stain and Sealer for Wood
  • Requires no primer. Ready Seal is darkest when first applied. It reaches its true color in approximately 14 days. Do not apply Ready Seal...
  • 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.
No. 2
DEFY Crystal Clear Composite Deck Waterproofing Sealer, 1 Gallon
38 Reviews
DEFY Crystal Clear Composite Deck Waterproofing Sealer, 1 Gallon
  • WATER-BASED, CLEAR COMPOSITE DECK SEALER – This water based, clear wood and deck sealer protects composite wood from the harmful effects...
  • FORTIFIED WITH ZINC NANO-PARTICLE TECHNOLOGY– It’s like sunscreen for your wood. Tiny zinc particles dispersed throughout the stain...
  • EXTREMELY DURABLE, HIGH QUALITY RESINS – DEFY Composite Deck Sealer is made with the highest quality resins available that have better...
  • QUALITY THAT LASTS – DEFY Extreme Composite Deck Sealer is a premium-grade, clear deck sealer that is built to last. Keep your weathered...
  • EASY TO MAINTAIN – When it’s time to do a maintenance coat, there’s no need to strip the surface. Make sure the surface is clean, then...
No. 3
THOMPSONS WATERSEAL TH.041811-16 Transparent Waterproofing Stain, Harvest Gold
  • 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 for Waterproofing Wood
No. 4
Olympic Stain 56500-1 Maximum Waterproofing Sealant, 1 Gallon, Clear
64 Reviews
Olympic Stain 56500-1 Maximum Waterproofing Sealant, 1 Gallon, Clear
  • Enhanced waterproofing protection to help make sure your wood is protected from cracking due to water
SaleNo. 5
THOMPSONS WATERSEAL 21802 VOC Wood Protector, 1.2-Gallon
27 Reviews
THOMPSONS WATERSEAL 21802 VOC Wood Protector, 1.2-Gallon
  • 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
No. 6
Eco Advance EAWOD16CON 16-oz Exterior Wood Siloxane Water Repellent Liquid Concentrate, White But Dries Clear
18 Reviews
Eco Advance EAWOD16CON 16-oz Exterior Wood Siloxane Water Repellent Liquid Concentrate, White But Dries Clear
  • 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
No. 7
#1 Deck Premium Semi-Transparent Wood Stain for Decks, Fences, Siding - 1 Gallon (Dark Walnut)
  • PROTECTS AGAINST COLOR FADE AND PREVENTS GRAYING - #1 Deck Protects Wood From Damage Caused By Exposure to the Elements. Can Be Used On...
  • BOTH A DECK STAIN & DECK SEALANT IN ONE - #1 Deck Stain Is a Dual-Purpose Stain & Sealer. It Adds Color to Your Wood and Seals it,...
  • ALLOWS THE WOOD GRAIN TO SHOW THROUGH - Available in 5 Beautiful, Semi-Transparent Deck Stain Colors That Dry to Flat, Natural Looking...
  • BETTER FOR THE PLANET, EASY SOAP & WATER CLEANUP - With Less Than 50 g/L VOC Content, #1 Deck Sealer Is a Better Choice For Our Planet....
  • WORKS ON DAMP WOOD, MINIMIZING THE WAIT TIME BETWEEN CLEANING AND STAINING - Once Your Wood Deck Is Visibly Dry, It's Ready to Stain.
No. 8
Armor WL550 Matte Wet Look Enhancer Sealer Concrete, Brick, Pavers, Stone, and Slate
  • Water repellent characteristics help to reduce deterioration caused by water absorption and freeze-thaw cycles
  • Will last for up to 3-5 years before the need to reseal
  • Breathable, low VOC, single coat application.