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Whether you’re tackling a bathroom makeover or sealing around a kitchen sink, applying sealant correctly can make all the difference to the look and longevity of your project. Sealant not only fills gaps and prevents leaks, but it also helps keep mould and moisture at bay. With the right tools, techniques, and a bit of know-how, anyone can achieve a smooth, professional-looking finish. In this guide, we’ll walk you through everything you need to know - so you can seal with confidence and get results that last.
Sealant can be used on a variety of surfaces:
Optional:
Ensure all surfaces are clean, dry, and free from grease, dust, loose material, or other contaminants that could affect adhesion. For best results, wipe down the area with a suitable cleaner and allow it to dry completely before proceeding.
Carefully cut away any old or damaged sealant using a scraper or utility knife. Ensure no residue remains, as new sealant will not adhere properly to old material.
Apply masking tape along the edges of the joint to create a clean, straight line. If sealing around a bathtub, fill it with water first. This allows the tub to settle under weight so the sealant forms a more reliable and long-lasting seal once cured.
Using scissors or a utility knife, cut the tip of the sealant cartridge nozzle at a 45° angle to match the size of the bead you need. The further down the nozzle you cut, the wider the bead will be.
Load the cartridge into the sealant gun and apply steady, even pressure to dispense an even bead along the joint. Work in manageable sections. Tool the surface within 5–10 minutes of application using a wet finger or a finishing tool to smooth and shape the bead.
If you used tape in Step 3, peel away the tape carefully before the sealant skins over to avoid pulling at the edges.
For Hemway Sealant:
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