10 bestWaterproof Deck Sealersof May 2026

Liquid Rubber Smooth Polyurethane Deck Coating - Solar Protection Deck Sealant, Non-Toxic Multi-Surface Waterproofing Membrane, Easy to Apply, Stone Gray, 1 Gallon

Liquid Rubber

9.4

SEAL-ONCE MARINE - 1 Gallon Penetrating Wood Sealer, Waterproofer & Stain. Water-Based, Ultra-low VOC formula for high-moisture areas to protect wood docks, decks, piers & retaining walls.

Seal-Once

9.1

Liquid Rubber Waterproof Sealant – DIY Leak Repair Coating for Flat, Metal & Low Slope Roofs, Foundations, Gutters & More – Flexible Protective Membrane - Black - 1 Gallon

Liquid Rubber

8.9

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

Thompson's Water Seal

8.6

OtherRelated products

DEFY Essential Semi Transparent Exterior Deck Stain and Sealer - One Day Deck Stain & Fence Stain - 1 Gallon (Driftwood Gray)

Thompson’s WaterSeal Semi-Transparent Waterproofing Wood Stain and Sealer, Desert Tan, 1 Gallon

Thompson’s WaterSeal Semi-Transparent Waterproofing Wood Stain and Sealer, Chestnut Brown, 1 Gallon

Thompson’s WaterSeal Solid Color Waterproofing Wood Stain and Sealer, Sedona Red, 1 Gallon

SEAL-ONCE Nano+Poly Penetrating Wood Sealer with Polyurethane - 1 Gallon. Water-Based, Low-VOC, waterproofer & Stain for Decks, Fences & Log Homes.

Seal-Once

8.3

Composite Deck Sealer by DEFY Wood Stain

DEFY

8.0

Ready Seal 100 Clear, 1-Gallon Exterior Wood Stain and Sealer, 1 gallon (Packaging may vary)

7% off

Ready Seal

7.7

Thompson’s WaterSeal Transparent Waterproofing Wood Stain and Sealer, Natural Cedar, 1 Gallon

Thompson's Water Seal

7.4

Thompson's WaterSeal Solid Color Wood Sealer, Natural Cedar, 1 Gallon

Thompson's

7.1