Gorilla Waterproof Coat & Seal Spray is a flexible, rubberized protective coating engineered to completely seal out water, air, and moisture. Over time, small cracks, gaps, and holes in roofing, guttering, and pipework can lead to severe structural damage if left untreated. This 450ml aerosol spray provides a fast and convenient way to apply a thick, protective barrier that penetrates deep into hard-to-reach leaks. The liquid formula dries to a semi-smooth, rubberized finish that moves and flexes alongside your surfaces, ensuring the seal will not crack or become brittle during freezing winters or scorching summers. It is an ideal choice for emergency repairs or preventative maintenance on a wide variety of household and outdoor fixtures.

Key Features and Specifications

This high-performance spray features an advanced liquid-rubber formula that provides a 100% waterproof seal. The 450ml can is designed with a high-pressure spray nozzle that delivers an even, controlled mist, allowing for smooth coverage over flat or uneven surfaces. The deep black color makes it highly suitable for blending into roofing felts, soil pipes, gutters, and automotive undercarriages. It exhibits excellent resistance to UV degradation, rust, and corrosion, ensuring long-term durability. The cured coating is highly versatile and adheres firmly to a vast range of substrates, including metal, wood, uPVC, brick, masonry, glass, and fiberglass.

How to Use

To achieve a permanent and reliable seal, ensure the target surface is completely clean, dry, and free from dust, rust, oil, or grease; lightly sanding smooth surfaces will enhance mechanical adhesion. Shake the can vigorously for at least 1 minute before spraying, and continue to shake periodically during use. Hold the can approximately 8 to 12 inches away from the project and apply a thin, even first coat using a steady, sweeping motion. Allow the first coat to dry completely for 15 to 30 minutes before applying subsequent layers; multiple thin coats are far more effective than a single thick layer. Once finished, clear the spray nozzle by turning the can upside down and spraying for a few seconds until only clear gas emerges.

Advantages and Disadvantages

The primary advantage of Gorilla Coat & Seal Spray is its incredible ease of use, allowing you to quickly patch up leaking roofs, downpipes, and flashings without using a brush, trowel, or mixing pots. Its long-lasting flexibility is a major benefit, as it safely expands and contracts with shifting materials without peeling away. A potential disadvantage is that because it is an aerosol spray, it can be prone to "overspray" on windy days, requiring nearby surfaces to be masked off for protection. Additionally, while it is excellent for sealing gaps and fine hairline cracks, it cannot bridge massive structural holes or open tears without the assistance of a reinforcement mesh or backing tape.

Delivery and Shipping

We use reliable courier services to ensure your hardware and sealing products are delivered safely and efficiently to your door. Standard delivery typically takes between 2 to 4 working days. Once your order has been dispatched from our warehouse, you will receive tracking information so you can monitor the progress of your shipment until it arrives.

Safety, Compliance and Disclaimers

Store the aerosol can in a cool, dry place strictly away from direct sunlight, open flames, or temperatures exceeding 50 degrees Celsius. Keep out of reach of children and pets. This product is highly flammable and contains volatile solvents; always apply outdoors or in an exceptionally well-ventilated area, and wear protective gloves and safety goggles. Avoid inhalation of vapors and direct contact with skin or eyes. Standard disclaimer: This product is designed for non-pressurized sealing applications; it is not intended for use on high-pressure water mains, radiator pipes, or automotive fuel systems.

FAQs (Frequently Asked Questions)

Can I paint over this black waterproof spray once it has dried? Yes, once the coating has fully cured (typically within 24 to 48 hours), it can be painted over with oil-based or latex paints to match the surrounding finish of your wall or roof.

Is this spray safe to use for repairing a leak inside a fish pond?

 No, this product contains solvent-based chemicals during application and curing that can be toxic to aquatic life. For ponds or structures holding live fish, you should use a certified, fish-safe pond sealant.

How long does it take for the spray to become completely waterproof?

 The spray forms a skin and becomes rainproof within a few hours of application under standard dry conditions. However, we recommend allowing a full 24 hours to pass before exposing the treated area to heavy standing water or severe weather.