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Weatherproof Sealant

Weatherproof Sealant Adhesive: Outdoor Sealing & Bonding

Adiseal weatherproof sealant adhesive provides a high-performance waterproof seal instantly in dry or wet conditions. It is suitable for both indoor and outdoor water-resistant sealing and bonding. Adiseal weather resistant sealant can also be used for emergency repairs due to its instant sealing properties.


Demonstration of weatherpoof sealant sealing a leak in water instantly
Demonstration of weatherproof sealant sealing a leak in water


Seal leak instantly

To showcase Adiseal’s exceptional instant leak-sealing abilities, we conducted a test using a plastic tub with a substantial 10mm by 250mm hole. Adiseal was applied underwater and instantly sealed the leak, even as a significant amount of water poured out. This impressive performance highlights Adiseal’s capacity to handle challenging situations effortlessly. Trust Adiseal to effectively meet all your weatherproof sealing requirements.

Video of weatherproof sealant



Weatherproof sealant for indoor & outdoor use

Adiseal is a versatile sealant suitable for both indoor and outdoor applications. It excels as a weatherproof sealant for external use and is equally effective for internal applications. Its high UV resistance, flexibility, and superior temperature resistance make Adiseal the perfect choice for outdoor projects. Whether sealing joints, repairing leaks, or safeguarding against harsh weather, Adiseal’s waterproof sealant properties guarantee a reliable and durable solution.

Moreover, Adiseal can cure underwater, prevent mould growth, and maintain strong adhesion to surfaces even when exposed to water. These characteristics make it an outstanding option for weatherproof applications, including sealing roofs and gutters. With Adiseal, you can confidently seal gutters, even during rainy conditions.


Outdoor weatherproof sealant

Adiseal external weatherproof sealant is a high-performance solution designed for outdoor use. It offers superior weatherproofing, preventing moisture, rain, and harsh weather damage. Adiseal excels at sealing gaps in various outdoor structures, provides strong and long-lasting bonding, and is compatible with materials like metal, wood, brick, concrete, and plastics. Its excellent adhesion, flexibility, and UV resistance make it a trusted choice for weatherproofing exterior surfaces.



Mould resistant sealant test

At Adiseal Ltd, we are dedicated to providing the best weatherproof sealant which also requires a product with high mould resistance. In our mould resistance test, Adiseal outperformed all products tested, including a competitor claiming to be number 1 product, establishing its superior mould resistance. For detailed test results, please see the image below.

Mould resistant weatherproof sealant test vs popular competitor. Adiseal has stayed mould free longest whereas *** sealant and adhesive has become mouldy.
Strongest mould resistance test results.


Mould resistance test result

Adiseal is the top choice for preventing mould growth, as seen in the image above. Despite extended water exposure, Adiseal remained entirely free of mould, while the competitor product showed signs of mould development. Adiseal’s outstanding weatherproof sealant properties offer enduring protection against mould growth, keeping your surfaces clean and pristine.



Weatherproof clear sealant

Adiseal Ultra Clear weatherproof sealant & adhesive lives up to its name, ensuring clarity unlike other clear sealants that may appear cloudy or tinted when applied. Cheaper silicone sealants can compromise surface aesthetics with a cloudy or white appearance. However, with Adiseal Ultra Clear weatherproof sealant & adhesive, your surfaces will maintain their clarity while benefiting from reliable clear weatherproof protection. Adiseal’s crystal-clear formulation keeps your surfaces pristine and well-protected.


Adiseal Ultra Clear has strongest colour retention in water

Clear weatherproof sealant in water comparison. Adiseal Ultra Clear weather sealant has stayed clear whereas *** clear sealant and adhesive has turned white.
Colour retention of sealant. Test in water.

Adiseal outperforms a competitor’s clear product in underwater colour retention. Unlike the competitor’s product, Adiseal remains crystal-clear when submerged, ensuring your surfaces maintain their aesthetics underwater. Rely on Adiseal’s trustworthy weatherproof sealant to keep your surfaces looking their best in all conditions.



Weatherproof clear sealant colour test in water

In the colour retention test of clear weatherproof sealants in water, we applied the products to new plastic cups. The cups were filled halfway with tap water, covered, and kept under identical conditions for several days. Adiseal demonstrated exceptional colour retention, preserving its clarity and transparency, while some competitor products exhibited signs of discolouration or cloudiness. Adiseal’s weatherproof sealant excelled in maintaining its color, showcasing its effectiveness and durability even in challenging underwater conditions.

Clear waterproof sealant test in water. Adiseal Ultra Clear waterproof sealant has stayed clearest.
Waterproof sealant clear test results in water.


Adiseal top in colour retention test

Adiseal excelled in our tests, maintaining clear color both above and below the waterline, while competitor clear sealants turned white below the waterline. Even a competitor claiming to be top-performing showed discoloration in both areas, with their older formula outperforming the new one. Adiseal’s outstanding color retention ensures surfaces look their best, making it the superior choice for challenging weather conditions.



Benefits of Adiseal Weatherproof Sealant & Adhesive


How to use a weatherproof sealant

Details of how to use a weatherproof sealant.

  1. Surface Preparation

    Ensure the surfaces to be sealed are clean, dry, and free from dust, grease, or any other contaminants. Use appropriate cleaning agents if needed to achieve a clean surface.

  2. Cut the Nozzle

    Cut the nozzle of the sealant tube to the required size of the bead.

  3. Apply the Sealant

    Load the sealant tube into a caulking gun and apply a continuous bead of sealant along the joint or gap. Use steady pressure on the gun for a consistent application.

  4. Tooling

    Use a caulking tool or your finger to smooth and shape the sealant for a neat and even finish. Remove excess sealant to create a tidy appearance.

  5. Curing Time

    Allow the sealant to cure as per the manufacturer’s instructions. Keep in mind that curing time may vary based on temperature and humidity levels.

  6. Check for Proper Sealing

    After curing, inspect the sealed area to ensure there are no gaps or voids, and the sealant adheres properly to the surfaces.


Tip: To store Adiseal once opened, leave about 1cm worth of product out of the nozzle and store the tube upright in a cool dry place. Adiseal requires moisture for it to cure. The exposed part out of the nozzle will cure creating a cap. To re-use Adiseal, pull the cured part out or cut the nozzle until the uncured part is reached.



Weatherproof sealant for wood

To demonstrate Adiseal’s exceptional performance as a weatherproof sealant on wood, we applied it to wood and brick surfaces in both dry and wet conditions. The images below illustrate how Adiseal adheres effectively to both dry and wet surfaces, delivering exceptional weatherproofing and resistance against the elements.


Applying weatherproof sealant on wood & wet brick.
Applying weatherproof sealant on wood and wet brick.
Grab demonstration of waterproof sealant on wood & brick.
Instant grab demonstration of sealant on wet surfaces.



Weatherproof sealant for plastic

Adiseal is a versatile weatherproof sealant suitable for various materials, including plastic. It works effectively in sealing most plastic materials, including PVC. However, it is not recommended for use on polypropylene and polyethylene plastics.


Weatherproof sealant for metal

Adiseal, a versatile weatherproof sealant, offers excellent results on various surfaces, including metal. To achieve a long-lasting seal, thorough cleaning of the metal surface is crucial. Ensure complete removal of any oil, grease, or rust before applying Adiseal for optimal performance.


What can you use weatherproof sealant on?

Adiseal is an exceptionally versatile product that excels beyond dedicated options. It serves as a reliable weatherproof sealant for roofs, tiles, plastic, metal, doors, felt, and various other items. Adiseal can also effectively seal leaking gutters, even in rainy conditions, providing a robust and weather-resistant solution for multiple projects.



Where to buy?

In the UK, to buy weatherproof sealant from Adiseal stockists, contact us for details of your local stockist. For other countries, they can be purchased from online sellers like www.guglue.com who can ship worldwide.

We are looking for exclusive distributors for other countries. Please contact us for more details.



Paint on weatherproof sealant

Using paint over Adiseal weatherproof sealant is possible, but caution is advised with oil or solvent-based paints. To ensure compatibility, perform a small test by applying the sealant on a disposable item, letting it cure, and then applying the paint. Observe whether the paint adheres or peels off. In general, most paints are compatible with Adiseal, but it’s prudent to conduct a test for the best results.


Adiseal is available in the following colours:

Adiseal can be manufactured in any RAL colour.



Frequently asked questions about waterproof sealant

What is the best external waterproof sealant?

Adiseal is the best external waterproof sealant. With its ability to seal instantly, even underwater, it’s the ultimate choice for all your sealing needs. Its high mould resistance makes it perfect for external use, and its clear formulation stays clearest even after prolonged submersion in water. Plus, Adiseal works just as well in the rain, making it the ideal weather resistant solution for your sealing needs.

What is weatherproof sealant?

Weatherproof sealant is a type of sealant that provides a protective barrier against moisture, rain, and harsh weather conditions. It is designed to keep surfaces sealed and protected from water damage.

Where can weatherproof sealant be used?

Weatherproof sealant can be used in a wide range of applications, both indoors and outdoors. It is commonly used to seal gaps, joints, and cracks in roofs, windows, doors, gutters, and outdoor structures.

What materials can weatherproof sealant adhere to?

Weatherproof sealant can adhere to various materials, including metal, wood, brick, concrete, plastic, and more. However, it’s essential to ensure proper surface preparation for optimal adhesion.

Is weatherproof sealant resistant to UV rays?

Adiseal has high UV resistance, making it suitable for outdoor applications where exposure to sunlight is common.

Can paint be applied over weatherproof sealant?

In most cases, paint can be applied over weatherproof sealant, but it’s essential to test it in a small area first, especially if the paint is oil or solvent-based.



Suhail Matadar has extensive experience in the construction industry as an electrician, involved in installing, inspecting, and testing electrical systems in various projects. He excelled in sales, working for a major UK wholesaler, selling construction products to professionals and the DIY market. Suhail's background includes working at a leading home emergency repair company dealing with trades people. With a BEng (Hons) degree in Electronic Engineering, Suhail has worked with PLCs in the nuclear fuel manufacturing industry. During his studies, he gained practical experience at a chemical manufacturing company known for producing award-winning cleaning, hygiene, and livestock protection products for over a century. Currently, Suhail runs a global business specialising in supplying, researching, testing, and distributing chemical construction products like adhesives and sealants.