SEALS OUT WATER, AIR & MOISTURE
Gorilla Waterproofing Liquid Black
A flexible, rubberised coating that seals out water, air and moisture.
Perfect for repairing leaks, the liquid is easy to apply – you simply brush it, roll it or pour it.
The self-levelling formula seals and protects by smoothly covering small gaps and cracks to create a weatherproof, watertight seal.
The flexible coating works on both wet & dry surfaces.
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#Wickes / https://www.wickes.co.uk/Gorilla-Black-Waterproof-Coat+Seal---473ml/p/263581 / 473ml Black
#Wickes / https://www.wickes.co.uk/Gorilla-Black-Waterproof-Coat+Seal---946ml/p/263583 / 946ml Black
#Dunelm / https://www.dunelm.com/product/gorilla-glue-coat-seal-liquid-473ml-black-1000213654 / 473ml Black
#Halfords / https://www.halfords.com/motoring/paints-and-body-repair/adhesives/gorilla-wpcs-pourable-black-473ml-377027.html / 473ml Black
BUILD, FIX AND REPAIR
Gorilla Waterproofing Liquid Black
PREPARE
Ensure surface is clean and free from dust, grease and oil. Stir contents for 30 seconds until it is thoroughly mixed.
APPLY
Apply to surface by brush, roll, trowel or simply by pouring. Apply between 10°C and 48°C. Do not use for gaps larger than 6mm. Ensure surface is completely covered. Wipe up any unwanted material with a dry cloth or paper towel immediately. Full cure in 24-48 hours.
Note: Multiple coats can be applied to ensure all cracks and holes have been filled. Test finished project with light water exposure to ensure all cracks have been filled. If test fails, apply additional coats. Allow to cure between coats and before water exposure. To achieve a watertight seal, surfaces must be non-porous.
STORAGE
Use mineral spirits to clean applicators such as brushes and rollers. Wipe excess product from top edge of tin with a dry cloth. Firmly press lid shut to create tight seal around the tin. Store away from children and animals.
technical specs
PRODUCT FEATURES
#FLEXIBLE: The liquid rubber coating is flexible making it a great choice for a wide range of projects
#SELF-LEVELLING: Easy to apply, simply roll, brush or pour onto the surface
#INDOOR & OUTDOOR: The formula is weatherproof and temperature resistant making it great for outdoor repairs as well as indoor leak fixes
#STOPS & PREVENTS LEAKS: Seals and protects by smoothly covering small gaps and cracks to create a watertight seal.
#TEMPERATURE RESISTANT: Rest assured that your fix is protected against extreme weather conditions as the formula is resistant to -40°C to 100°C.
Useful downloads
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Frequently Asked
Questions
Need more info? You can find it here.
Gorilla products are widely stocked across the UK. You'll find our range at major retailers including Amazon, Tesco, B&Q, Wilko, Wickes, Homebase, Travis Perkins, Screwfix, Sainsbury's, Morrisons, Hobbycraft, Toolstation, Ryman, ASDA, Dunelm, and The Range. To find your nearest stockist, enter your postcode in our store finder. Please note that not all retailers stock the full Gorilla range — contact your local store to check availability.
If you're looking to stock Gorilla products in your business or use them in trade, our range is available through a number of wholesale distributors including Toolbank, Stax Trade Centres, Decco, TDUK, Wilsons, Home Hardware, and EFG Wholesale.
Each Gorilla product is engineered for specific applications. Check the product label for material compatibility, or visit our website's product selector tool to find the perfect adhesive, tape, or sealant for your project. Our range covers everything from indoor repairs to heavy-duty outdoor bonding.
Sign up to our newsletter at the bottom of this page to be the first to hear about new product launches, exclusive offers, and tips from the Gorilla team. You can also follow us on social media for the latest updates and inspiration.
#How do I remove Gorilla Waterproof Coat & Seal from my surface? / +This material will be difficult to remove from a surface. For wet material, immediately wipe with a dry cloth or paper towel. For cured material, a solvent may soften the material but could damage the surface around/underneath. Gently cut or scrape the material to try and remove. A textured surface will be much harder to clean than a smooth one. Use mineral spirits to clean applicators such as brushes and rollers.
#How do I remove Gorilla Waterproof Coat & Seal from my body or skin? / +We strongly recommend wearing gloves while working on any project using Gorilla Waterproof Coat & Seal. If you do get it on your skin, try wiping it off with a dry cloth or paper towel. For cured material, try washing with soapy water to loosen the coating. Dry your skin and apply lotion. We do not recommend using any kind of alcohol, acetone, or other solvent on the skin. If irritation occurs seek medical advice and have product container or label at hand.
#Is Gorilla Waterproof Coat & Seal food safe? / +This product is not recommended for direct or indirect food contact.
#What is the approximate shelf life of Gorilla Waterproof Coat & Seal? / +The approximate shelf life of Gorilla Waterproof Coat & Seal is up to 2 years, unopened from date of manufacture. Once opened it will be dependent on storage conditions and age of the product.
#What is the temperature range of Gorilla Waterproof Coat & Seal? / +Gorilla Waterproof Coat & Seal can be applied between 10°C and 48°C. Once cured, it can withstand temperatures between -40°C and 60°C.
#What’s the best way to prepare product for use? / +Stir contents for 30 seconds until it is thoroughly mixed. After first use, slight skinning may occur. If this occurs, remove the layer and stir contents for 30 seconds.
#Are Gorilla Glue products tested on animals? / +We believe strongly in the inherent rights of animals. Therefore, The Gorilla Glue Company does not perform any kind of animal testing.
#What should I do if I think a human or animal has ingested Gorilla Waterproof Coat & Seal? / +For medical emergencies, seek medical assistance immediately. Call 999/112 for emergency services. For animal emergencies, contact a vet or animal specialist immediately. Refer to SDS for more information and have product label to hand. Gorilla Waterproof Coat & Seal Liquid
For the toughest jobs on planet Earth®
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Gorilla Waterproofing Liquid Black
We do not sell direct on this site, buy from a trusted retailer using the links above.
More About This Product
Gorilla Waterproof Coat & Seal Liquid Use Cases & Applications
Waterproofing Leaks
For repairing leaks, Gorilla Waterproof Coat & Seal Liquid stands out due to its easy application.
The waterproof coating effectively seals leaks in various surfaces, providing immediate protection and preventing further water damage.
Waterproofing Cracked Gutters
Gorilla Waterproof Coat & Seal Liquid is highly effective for waterproofing cracked gutters, as it creates a reliable seal that prevents water from escaping or pooling.
The flexible nature of the waterproofing liquid rubber allows it to adapt to the movements of the gutter system, ensuring long-term performance in managing rainwater.
Waterproofing Cracked Drainage Pipes
Using Gorilla Waterproof Coat & Seal Liquid on cracked drainage pipes ensures they remain watertight and functional.
The coating’s rubberised texture provides excellent adhesion and flexibility, making it suitable for sealing joints and preventing leaks in drainage systems.†
Waterproofing Damaged Roof Tiles
For , our spray offers superior waterproofing capabilities.
It adheres well to tile surfaces, providing an additional layer of protection against moisture accumulation and potential leaks.
Always consult with a roofing professional for major repairs or installations.
Waterproofing Chimney Leaks
Gorilla Waterproof Coat & Seal Liquid is an excellent choice for waterproofing chimney leaks, as it protects against moisture ingress that can cause structural damage.
Its ability to coat various materials ensures that chimneys remain sealed against the elements.‡
Waterproofing Window Leaks
For damaged window frames, Gorilla Waterproof Coat & Seal Liquid offers a reliable solution to prevent water penetration.
Its easy application method allows homeowners to quickly apply the coating around windows, ensuring a tight seal that reduces drafts and protects against leaks.
Waterproofing Conservatory Roof Leaks
The liquid nature of this product enables complete coverage of small conservatory roof leaks, sealing even the smallest gaps and cracks.
Our product’s self-levelling formula ensures an even application, creating a seamless waterproof barrier.
Waterproofing Caravan Leaks
For caravans, this coating provides a flexible, rubberised layer that moves with the vehicle without cracking.
This ensures long-lasting protection against water and moisture, even under the stress of travel.◊
The Benefits of Our Rubberised Coating For Our DIY Enthusiasts & Tradespeople
Low Odour:
The formulation of Gorilla Waterproof Coat & Seal Liquid ensures a pleasant application experience with minimal odour, making it suitable for indoor and outdoor use.
Flexible:
This rubberised coating maintains flexibility even after curing, allowing it to withstand movement and the expansion of surfaces while remaining crack-free.
Paintable:
Once cured, the coating can be easily painted over, providing versatility for various projects and allowing for colour customisation.
Temperature/UV Resistant:
Gorilla Waterproof Coat & Seal Liquid is designed to resist temperature fluctuations and UV exposure, ensuring long-lasting protection against environmental elements.
Self-Levelling:
The coating’s self-levelling properties allow it to fill in small gaps and imperfections, creating a smooth and even surface for optimal waterproofing.§
Apply by Brush, Roll, Trowel, or Pour:
Its versatile application methods make it easy for both DIY enthusiasts and professionals to use, accommodating different project needs and preferences.
Creates a Protective Coating:
The durable layer formed by the coating protects against moisture, leaks, and other damaging elements, extending the life of various surfaces.
† Disclaimer: Not for pipes under pressure.
‡ Disclaimer: Not for flashing applications.
◊ Disclaimer: Only for use on small gaps, cracks or tears. Not to be used to cover large areas. Do not use near the engine or exhaust areas.
§ Disclaimer: The product is not suitable for gaps larger than 6mm.