how to use unibond silicone sealant


How to Use Unibond Silicone Sealant

Introduction to Unibond Silicone Sealant

Unibond Silicone Sealant is a versatile product that provides a strong and long-lasting seal. Whether you are a DIY enthusiast or a professional tradesperson, this article will guide you through the process of using Unibond Silicone Sealant effectively.

Preparing the Surface

Before applying Unibond Silicone Sealant, it is crucial to properly prepare the surface. Start by cleaning the area thoroughly to remove any dirt, dust, or debris. This can be done using a mild detergent and water solution. Ensure the surface is completely dry before moving forward. Additionally, make sure to remove any old sealant, as it may interfere with the adhesion of the new silicone.

Choosing the Right Unibond Silicone Sealant

Unibond offers a variety of silicone sealants, each designed for specific applications. When choosing the right product for your project, consider factors such as the type of surface you are sealing, temperature resistance, and flexibility requirements. Unibond's range includes products suitable for bathroom fittings, kitchen surfaces, windows, and much more. Take your time to select the most appropriate sealant for your needs.

Applying Unibond Silicone Sealant

Once you've prepared the surface and chosen the correct sealant, it's time to apply it. Start by cutting the nozzle of the tube at a 45-degree angle, ensuring the hole is wide enough for the desired bead size. Fit the cartridge into a sealant gun, applying steady pressure to the trigger. Begin at one end of the area you wish to seal and move in a continuous motion, smoothly creating an even bead of silicone. It is crucial to maintain a consistent speed and pressure to ensure a uniform application.

Smoothing and Finishing

After applying the silicone sealant, use a smooth-edged tool, such as a caulking tool or a wet finger, to smooth the bead. This process helps achieve a neat and professional finish while removing any excess sealant. Dip your finger in a mixture of water and mild detergent to prevent the silicone from sticking and to create a smooth surface. Continuously moisten your finger throughout the process to ensure easy gliding without sticking.

Curing Time and Maintenance

Once you have applied and smoothed the Unibond Silicone Sealant, allow it to cure for the recommended time before exposing it to water or other elements. The curing time can vary depending on factors such as humidity and temperature. Generally, it takes up to 24 hours for the sealant to fully cure. While waiting for the silicone to cure, avoid touching or disturbing it.

Cleaning Up

To maintain the longevity of your tools, it is essential to clean them promptly after use. Remove any excess sealant from the cartridge nozzle and gun using a clean cloth or paper towel. If sealant has accidentally spread onto surfaces where it is not needed, use a silicone sealant remover and follow the manufacturer's instructions carefully.

Tips and Precautions

- Always read the instructions provided by Unibond before using their silicone sealant.

- Only use Unibond Silicone Sealant in well-ventilated areas.

- Use appropriate personal protective equipment, such as gloves and safety goggles, when handling the sealant.

- Store the sealant in a cool and dry place, away from direct sunlight and heat sources.

- Regularly inspect the sealed areas and reapply the sealant if signs of wear or damage are noticed.


Using Unibond Silicone Sealant is a straightforward process when following the correct steps. By preparing the surface, choosing the right sealant, applying it evenly, and smoothing the bead for a professional finish, you can ensure a long-lasting and watertight seal. Remember to respect the curing time and clean your tools properly after use. With Unibond Silicone Sealant, you can confidently tackle any sealing project.


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