10 Best Shower Sealants 2025 in the UK

The UniBond 2079356 Anti-Mould White Silicone Sealant is designed for those needing a reliable solution for their kitchen and bathroom sealing needs. It excels in material compatibility, working well with tiled surfaces often found in bathrooms and kitchens. Its formulation is a high-strength silicone that ensures a strong and long-lasting seal, which is crucial for preventing water leaks and maintaining the integrity of the sealed area.

One of the standout features is its water resistance. Once cured, this sealant forms a waterproof barrier that is essential for wet environments. Additionally, its anti-mould properties make it particularly appealing for those looking to keep their spaces clean and free from mildew. This sealant is particularly suited for humid environments, emphasizing its mold and mildew resistance, although regular cleaning is recommended to maintain its effectiveness.

In terms of curing time, the UniBond sealant is touch dry in 20 minutes and fully sets within 24 hours. This relatively quick drying time allows for tasks to be completed swiftly, with minimal downtime. It's important to note that while the sealant is easy to apply with a gun, precise application is key to achieving the best results.

Potential users should be aware that this product is specifically available in a 274g cartridge in white, which might not suit everyone’s aesthetic preferences or project size needs. Additionally, delivery is limited to certain areas, primarily within the mainland UK, so availability could be a concern for international buyers.

The Everbuild EVBGPSCL General Purpose Silicone Sealant is a versatile option for those seeking a reliable sealant for their kitchens and bathrooms. As a clear silicone sealant, it effectively adheres to most smooth and non-porous surfaces, making it suitable for a wide range of materials. Its strong compatibility with materials means it can confidently be used around sinks, showers, baths, and toilets, which is essential for maintaining tight seals in high-moisture areas. The inclusion of an anti-fungal compound is a notable advantage, as it helps prevent mold and mildew growth in the humid environments typical of bathrooms and kitchens.

The sealant offers good water resistance, creating durable seals that keep moisture out. This feature is complemented by its ability to remain permanently flexible, which is crucial for handling the natural expansion and contraction of surfaces over time. However, potential users should note that application requires a caulk or sealant gun, such as the Everbuild Power Pro Heavy Duty Applicator Gun, which may add an extra purchase for those without one.

This sealant is a good choice for DIY enthusiasts or homeowners looking for a dependable solution in damp areas. It performs well in terms of mold resistance, water sealing, and material flexibility. Nevertheless, careful surface preparation and the need for an applicator tool might pose minor drawbacks for some users.

The Sika Stixall Extreme Power Sealant and Adhesive is a versatile and high-performance product, well-suited for shower-sealant applications. Its hybrid polymer technology provides strong initial grab strength and zero sagging, making it effective for filling gaps in various materials such as glass, metals, plastic, concrete, and wood. This sealant is waterproof and can bond even underwater, which is ideal for shower environments. Furthermore, it is resistant to mold and mildew, contributing to a cleaner and healthier bathroom space.

The product is designed for both interior and exterior use, though the Crystal Clear variant isn't suitable for outdoor applications. Its curing time is quite extensive, taking up to 144 hours for a full cure, which might be a drawback for projects needing quick completion. It develops a skin in just 10 minutes and can be painted over with water-based paints once dry, offering a professional finish. The ease of application is notable; simply insert the cartridge into a caulking gun, snip the tip, and apply.

Additionally, the sealant is durable, with resistance to temperature extremes and various chemicals, ensuring long-lasting use. Available in multiple colors, including Black, Brown, Anthracite, White, Crystal Clear, and Grey, it caters to different aesthetic preferences.