Gorilla Patch & Seal Liquid Rubber Waterproof Sealant - Flexible Roof

In this review of Gorilla Patch & Seal Liquid Rubber Waterproof Sealant the bottom line is straightforward: this product is for homeowners and DIYers who need a flexible, paintable coating to stop leaks and seal joints. The biggest reason to buy is its rubberized, self-leveling formula that seals out water, air and moisture and adheres to common building materials. It is presented in a large 32 oz format (sold here in a pack of six) and works well on roofs, gutters, flashing and pipe joints when used for exterior patching and repairs.

Key Features

• Flexible rubberized coating: Creates a pliable, watertight layer that moves with materials to help prevent recurring leaks.
• Self-leveling formula: Smoothly covers small gaps and cracks for a continuous seal without heavy troweling.
• Multiple application methods: Can be brushed, rolled, troweled, dipped or poured to suit both detail work and larger patches.
• Temperature and UV resistant: Dries into a durable finish that resists sun and temperature changes for longer-lasting repairs.
• Paintable surface: Accepts latex or oil-based paints after drying, with a primer recommended for oil-based topcoats.
• Versatile substrates: Bonds to metal, concrete, wood, brick, tile, glass and more for broad exterior use.

Who It's For

This sealant is best for homeowners, roofers, RV owners and general DIYers who need a weatherproof, exterior-grade coating for patching roofs, gutters, skylights, chimneys and pipe joints. The product is convenient when a brush-or-pour option is needed for both small repairs and broader surface coatings.

It is not intended for continuous submersion or below-waterline repairs, nor for interior use inside a firebox or chimney stack. Users who need a thin, low-viscosity sealer for intricate plastic or rubber types should test compatibility first or consider a specialized product.

Pros & Cons

Pros

• Creates a flexible, watertight barrier that effectively blocks water, air and moisture.
• Easy to apply with several methods so it fits different project scales and preferences.
• Paintable and resistant to temperature and UV, which helps the repair look finished and last longer.
• Adheres to a wide range of common exterior materials for versatile use.

Cons

• Some users note the material can be thick and slightly sticky during application, which may make fine work harder.
• Not suitable for continuous underwater use or some plastics and rubbers without testing.

Specifications

Product type	Liquid rubber waterproof sealant
Color	White
Size	32 oz per container (pack of 6)
Applications	Roofs, gutters, skylights, chimneys, pipe joints, windows, RV roofs
Surface compatibility	Metal, concrete, wood, brick, tile, glass, fabric
Paintable	Yes; latex or oil-based (use primer for oil)
Limitations	Not for continuous submersion or inside firebox/chimney stack

Our Verdict

Gorilla Patch & Seal Liquid is a practical choice for exterior leak repairs where a flexible, paintable rubber coating is needed. It offers solid adhesion to common building materials and multiple application options, making it good value for homeowners and DIYers who need durable, weather-resistant patching. Test on plastics and avoid below-waterline use.

Frequently Asked Questions

Can this be used on an RV roof?
Yes, it is suitable for RV roof sealing and flashing repairs when applied to a clean, dry surface.

Is the dried coating paintable?
Yes, the surface accepts latex and oil-based paints; use a primer before oil-based topcoats.

Can it be used underwater?
No, it is not designed for continuous submersion or below-waterline applications.