10 bestWaterproof Sealerof July 2025
112M consumers helped this year.
1

Liquid Rubber RV Roof Sealant- Professional-Grade Solar Reflective Flexible Waterproof Membrane Coating for EPDM, TPO, Fiberglass & Aluminum Camper & Travel Trailers- 1 Gallon
Liquid Rubber

9.9
2

Gorilla Waterproof Patch & Seal Tape, Works Under Water, Indoor & Outdoor Use, Permanent Bond, Instantly Seals, Flexible, 4 in x 10 ft, Black, (Pack of 1) 4670002
Gorilla

9.8
3

Gorilla 100% Silicone Sealant Caulk, All Purpose, Waterproof, 2.8oz/82ml Squeeze Tube, Clear Transparent, (Pack of 1), 8190001
Gorilla

9.5
4

GE Advanced Silicone Caulk for Kitchen & Bathroom - 100% Waterproof Silicone Sealant, 5X Stronger Adhesion, Shrink & Crack Proof - 2.8 fl oz Tube, White, 1 Pack
GE

9.3
5

Flex Seal – Stop Leaks Fast! Rubberized Waterproof Coating Spray, Ideal for Roofs, Holes, Cracks, DIY Projects, Automotive Fixes, Indoor & Outdoor Repairs, and More – Clear, 14 oz. (397 g) – 2 Pack
Flex Seal

9.0
OtherUp to 23% off
6

Permatex 59203 Black RTV Silicone Adhesive Sealant 16BR, 80ml
Permatex

8.7
7

Gorilla Waterproof Patch & Seal Spray, Flexible Rubberized Coating, Seals Out Water Air & Moisture, Stops & Prevents Leaks, Black, 16oz/453g, (Pack of 1), 104058
Gorilla

8.4
8

Liquid Rubber Color Waterproof Sealant - Multi-Surface Leak Repair Indoor and Outdoor Coating, Water-Based, Easy to Apply, Medium Gray, 1 Gallon
Liquid Rubber

8.1
9

Liquid Rubber Concrete Foundation and Basement Sealant - Indoor & Outdoor Waterproof Coating, Easy to Apply, Black, 1 Gallon
Liquid Rubber

7.8
10

Liquid Rubber Waterproof Sealant - Multi-Surface Leak Repair Indoor and Outdoor Coating, Water-Based, Easy to Apply, Original Black, 1 Quart
Liquid Rubber

7.6

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