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10 Best Shower Sealants 2025 in the UK

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Our technology thoroughly searches through the online shopping world, reviewing hundreds of sites. We then process and analyze this information, updating in real-time to bring you the latest top-rated products. This way, you always get the best and most current options available.

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Our Top Picks

#1

Winner

UniBond 2079356 Anti-Mould White, Waterproof Mould Protection Kitchen & Bathroom Sealant, Long-lasting White Silicone Sealant, Powerful Bath Sealant, 1 x 274g Cartridge

Rating
9.9
Chosen by1,294
Water Resistance
Mold and Mildew Resistance
Ease of Application
Water Resistance
Waterproofing is top-notch; even with constant water exposure, the sealant remains intact without peeling or cracking.
Mold and Mildew Resistance
The anti-mould formula really works, keeping high-moisture areas like showers and sinks free from mould and mildew.
Ease of Application
The 274g cartridge was easy to use with a standard caulking gun, and the sealant spread smoothly, ensuring a clean, professional finish.

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.

Rating
9.9
Chosen by1,294
Water Resistance
Mold and Mildew Resistance
Ease of Application
Water Resistance
Waterproofing is top-notch; even with constant water exposure, the sealant remains intact without peeling or cracking.
Mold and Mildew Resistance
The anti-mould formula really works, keeping high-moisture areas like showers and sinks free from mould and mildew.
Ease of Application
The 274g cartridge was easy to use with a standard caulking gun, and the sealant spread smoothly, ensuring a clean, professional finish.
#2

UniBond Stop Mould Silicone Sealant For Kitchen & Bathrooms, Translucent Sealant Repels, Kills and Prevents Mould Growth, Long-Lasting Shower Sealant, 1x274g Cartridge

Rating
9.8
Water Resistance
Mold and Mildew Resistance
Ease of Application
Water Resistance
Remarkable waterproof durability ensures the sealant remains intact without peeling or cracking, even with constant water exposure.
Mold and Mildew Resistance
The anti-mould formula truly excels, keeping high-moisture areas like showers and sinks free from mould and mildew, even weeks after application.
Ease of Application
Application is straightforward with a standard caulking gun, spreading smoothly for a clean, professional finish.

The UniBond Anti-Mould Translucent Silicone Sealant is a highly rated option for those looking to seal areas in their kitchen and bathroom, particularly around showers and wet rooms. One of its strong suits is its material compatibility, as it is made from silicone, which is known for adhering well to various surfaces like tiles, glass, and ceramics. Its waterproof nature makes it a reliable choice for power showers, ensuring that water does not seep through seams and cause damage.

A significant advantage of this sealant is its anti-mold properties. It contains technology specifically designed to prevent mold and mildew, which is crucial in maintaining a clean and hygienic bathroom environment. The product also offers a translucent finish, which can be aesthetically pleasing as it blends well with most bathroom designs.

The UniBond Anti-Mould Sealant is a powerful and durable option for those in need of a reliable bathroom sealant. Its strengths lie in its water and mold resistance, making it ideal for wet environments. Users should be prepared for a curing process typical of silicone sealants and ensure they have the right tools for application.

Rating
9.8
Water Resistance
Mold and Mildew Resistance
Ease of Application
Water Resistance
Remarkable waterproof durability ensures the sealant remains intact without peeling or cracking, even with constant water exposure.
Mold and Mildew Resistance
The anti-mould formula truly excels, keeping high-moisture areas like showers and sinks free from mould and mildew, even weeks after application.
Ease of Application
Application is straightforward with a standard caulking gun, spreading smoothly for a clean, professional finish.
#3

Everbuild EVBGPSCL General Purpose Silicone Sealant, Clear, 280 ml (Pack of 2)

Rating
9.6
Water Resistance
Mold and Mildew Resistance
Curing Time
Water Resistance
This silicone sealant is mold resistant and waterproof, perfect for high-moisture areas like bathrooms.
Mold and Mildew Resistance
This silicone sealant is mold resistant and waterproof, perfect for high-moisture areas like bathrooms.
Curing Time
The sealant offers a good amount of time for corrections and cleanup, curing in about 15 minutes.
Ease of Application
Easy to apply and a great value, especially with the current sale price, making it a standout choice for bathroom use.

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.

Rating
9.6
Water Resistance
Mold and Mildew Resistance
Curing Time
Water Resistance
This silicone sealant is mold resistant and waterproof, perfect for high-moisture areas like bathrooms.
Mold and Mildew Resistance
This silicone sealant is mold resistant and waterproof, perfect for high-moisture areas like bathrooms.
Curing Time
The sealant offers a good amount of time for corrections and cleanup, curing in about 15 minutes.
Ease of Application
Easy to apply and a great value, especially with the current sale price, making it a standout choice for bathroom use.

Buying Guide for the Best Shower Sealants

Choosing the right shower sealant is crucial for ensuring a watertight and durable seal in your bathroom. A good sealant prevents water from seeping into unwanted areas, which can lead to mold, mildew, and structural damage. When selecting a shower sealant, consider the type of material you are sealing, the environment it will be exposed to, and the ease of application. Understanding the key specifications will help you make an informed decision that suits your specific needs.
Material CompatibilityMaterial compatibility refers to how well the sealant adheres to the surfaces you are working with, such as tiles, glass, or metal. This is important because a sealant that doesn't bond well can lead to leaks and damage. Sealants are often formulated for specific materials, so it's crucial to choose one that matches your shower's surfaces. For example, silicone sealants are versatile and work well with most materials, while acrylic sealants might be better for certain plastics. Consider the materials in your shower and choose a sealant that is specifically designed to adhere to them.
Water ResistanceWater resistance is the sealant's ability to withstand exposure to water without degrading. This is a critical feature for shower sealants, as they are constantly exposed to moisture. Sealants are generally categorized by their level of water resistance, with some being more suitable for areas with constant water exposure. For a shower, you want a sealant that is highly water-resistant to prevent leaks and ensure longevity. Look for products labeled as waterproof or specifically designed for bathroom use to ensure they can handle the wet environment.
Mold and Mildew ResistanceMold and mildew resistance indicates how well the sealant can prevent the growth of mold and mildew, which thrive in damp environments like showers. This is important for maintaining a clean and healthy bathroom. Sealants with added fungicides or antimicrobial properties are designed to resist mold and mildew growth. If your bathroom is prone to humidity and poor ventilation, prioritize a sealant with strong mold and mildew resistance to keep your shower area hygienic and easy to maintain.
Curing TimeCuring time is the period it takes for the sealant to fully set and become waterproof. This is important because using the shower before the sealant has cured can compromise its effectiveness. Curing times can vary from a few hours to several days, depending on the product. If you need to use the shower soon after application, look for a sealant with a quick curing time. However, if you can afford to wait, a longer curing time might offer a stronger bond. Consider your schedule and choose a curing time that fits your needs.
Ease of ApplicationEase of application refers to how simple it is to apply the sealant effectively. This is important for achieving a neat and professional finish, especially if you're doing the job yourself. Some sealants come in easy-to-use tubes with applicator tips, while others might require a caulking gun. If you're inexperienced, look for a product that is user-friendly and comes with clear instructions. Consider your comfort level with DIY projects and choose a sealant that you feel confident applying.