Best Anti-Mould Sealants of 2026

Corey Phillips Avatar
Corey Phillips
Last Updated: 11 Feb 2026

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Anti-mould sealants are a type of sealant that are specifically designed to prevent mould growth in areas with high moisture content. These sealants are commonly used in bathrooms, kitchens, and other areas where water is frequently used. They work by creating a moisture-resistant barrier that helps to prevent the growth of mould and mildew. Anti-mould sealants are available in a variety of formulations, including silicone and acrylic, and can be used on a range of surfaces, including tiles, walls, and ceilings. They are an effective way to protect your home from the harmful effects of mould and mildew, and can help to keep your living spaces clean and healthy.

At a Glance: Our Top Picks

UniBond Waterproof Anti-Mould Sealant for Kitchen & Bathroom Cover #TOP 1
UniBond Waterproof Anti-Mould Sealant for Kitchen & Bathroom
ftb score rating icon 9.8
Dryzone Anti-Mould Silicone Sealant for Bathrooms Cover #TOP 2
Dryzone Anti-Mould Silicone Sealant for Bathrooms
ftb score rating icon 9.7
Everbuild Acrylic Sealant for Kitchens and Baths Cover #TOP 3
Everbuild Acrylic Sealant for Kitchens and Baths
ftb score rating icon 9.5

Top 9 Anti-Mould Sealants

#TOP 1

UniBond Waterproof Anti-Mould Sealant for Kitchen & Bathroom

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

The UniBond Anti-Mould Sealant is specially formulated for use in warm and humid areas like kitchens and bathrooms. Once dried, it creates a flexible and waterproof seal that effectively prevents mould growth, ensuring a clean and healthy environment. Its high adhesion properties provide a long-lasting seal, giving you peace of mind. Moreover, this sealant is easy to use; it becomes 'touch dry' in just 20 minutes, allowing you to complete your tasks quickly and efficiently.

What We Like
Effective mould prevention
Quick drying time
High adhesion strength
Flexible and waterproof seal
#TOP 2

Dryzone Anti-Mould Silicone Sealant for Bathrooms

Anti-Mould
White
Pack of 1
Dryzone Anti-Mould Silicone Sealant for Bathrooms Cover
Dryzone Anti-Mould Silicone Sealant White, Waterproof Premium Sanitary-Grade, Low VOC Sealant for Bathroom and Kitchen

The Dryzone Silicone Sealant is a premium sanitary-grade product that offers excellent adhesion for various surfaces, ensuring long-lasting seals in humid areas like bathrooms and kitchens. Its anti-mould properties help prevent mould growth and staining, keeping your spaces clean. With a high silicone content, it provides a strong, waterproof seal that remains flexible in a range of temperatures and humidity levels. Plus, it cures quickly, becoming touch dry in just 20 minutes, making your sealing tasks easier and more efficient.

What We Like
Anti-mould resistance
Fast curing time
Strong waterproof seal
Low VOC and odour
#TOP 3

Everbuild Acrylic Sealant for Kitchens and Baths

BATHWH
White
1 - Pack
Everbuild Acrylic Sealant for Kitchens and Baths Cover
Everbuild Bath and Kitchen Acrylic Sealant – Anti Mould Formulation – White – 290ml cartridge

The Everbuild Acrylic Sealant is a flexible and versatile solution for your sealing needs. It adheres to a variety of surfaces, making it suitable for kitchen worktops, baths, and door frames. With its mould-resistant properties, this sealant contains a powerful fungicide, ensuring that areas exposed to humidity remain free from mould growth. Additionally, it can be overpainted once a surface skin has formed, allowing you to achieve a seamless finish that matches your décor.

What We Like
Flexible and high-quality
Mould resistant for humid areas
Can be overpainted
Easy to clean up
Fits standard sealant guns
#TOP 4

Dryzone Clear Anti-Mould Sealant for Home Use

Anti-Mould
clear sealant
310 ml
Dryzone Clear Anti-Mould Sealant for Home Use Cover
Dryzone Anti-Mould Silicone Sealant Clear, Waterproof Premium Sanitary-Grade, Low VOC Sealant for Bathroom and Kitchen

The Dryzone Anti-Mould Sealant is a quick-setting solution, becoming waterproof in about 20 minutes, making it ideal for urgent repairs around your home. It is designed for high performance, offering a long-lasting mould-resistant seal, perfect for the humid environments of bathrooms and kitchens. Its versatility allows you to seal various household items, from plumbing fixtures to mirrors and even decorative glass. With a low odour and easy-to-use formula, you can enjoy a pleasant experience while ensuring safe application.

What We Like
Fast-setting and waterproof
Mould-resistant for humid areas
Versatile for various uses
Low odour for safe application
Crystal clear finish
#TOP 5

UniBond Anti-Mould Sealant for Kitchens and Bathrooms

2079321
White
1 x 147 g
UniBond Anti-Mould Sealant for Kitchens and Bathrooms Cover
UniBond 2079321 Anti-Mould Sealant / White Silicone Sealant for Kitchen and Bathroom / 1 x 147 g Tube

The UniBond Sealant is a waterproof and mould-resistant silicone solution designed for use in bathrooms and kitchens. Its long-lasting adhesion ensures that it effectively seals areas such as tiles, worktops, and sanitary ware, preventing mould growth. This makes it a practical choice for maintaining cleanliness and hygiene in your home. The product comes in a convenient tube, making it ideal for small jobs around the house. For best results, ensure the surface is clean and dry before application.

What We Like
Waterproof and mould-resistant
Long-lasting adhesion
Convenient tube for small jobs
Effective mould prevention
#TOP 6

UniBond Re-New Sealant for Kitchens and Bathrooms

1944413
Renew White
80 ml
UniBond Re-New Sealant for Kitchens and Bathrooms Cover
UniBond Re-New White 80ml

UniBond Re-New Sealant is an innovative solution for refreshing old silicone in your bathroom or kitchen. You can simply apply it on top of the existing sealant without the hassle of removing it. The intuitive applicator ensures you achieve a clean finish with ease, making it suitable even for those without prior experience. Additionally, its triple mould resistance protects against mould, providing long-lasting cleanliness and peace of mind. With the auto-smooth nozzle, application is straightforward, allowing you to enjoy your shower just six hours after use.

What We Like
Easy application over old sealant
Professional finish without tools
Triple protection against mould
Quick drying time
#TOP 7

Everbuild Bath and Kitchen Sealant - Anti Mould

EVBEASIBATHW
White
200ml
Everbuild Bath and Kitchen Sealant - Anti Mould Cover
Everbuild Bath and Kitchen Acrylic Sealant – Anti Mould Formulation – White – 200ml

The Everbuild Acrylic Sealant is a high-quality, flexible solution ideal for various surfaces such as wood, tile, and plastics. Its versatility means you can use it around kitchen worktops, baths, and window frames, ensuring a perfect finish in every area. With a powerful fungicide included, this sealant effectively prevents mould growth, making it perfect for humid environments like bathrooms and kitchens. Plus, it can be overpainted once a surface skin has formed, allowing you to match it to your décor seamlessly.

What We Like
Permanently flexible sealant
Mould resistant with fungicide
Easy to clean and apply
Can be overpainted
Versatile for multiple surfaces
#TOP 8

Everbuild Forever Clear Waterproof Silicone Sealant

FOREVERCLEAR-EBD
Clear
295ml
Everbuild Forever Clear Waterproof Silicone Sealant Cover
Everbuild Forever Clear Anti-Mould Silicone Sealant – Permanently Waterproof – Suitable for Internal And External Use – Clear – 295ml

The Everbuild Forever Clear Sealant is an excellent choice for areas with high humidity, such as bathrooms and kitchens. Its long-lasting formula offers 25% flexibility, ensuring a waterproof finish that can withstand damp conditions. This sealant is particularly useful for shower bases and wet rooms, providing reliable protection against moisture. Additionally, it contains Mould Shield, an ingredient that helps prevent mould growth for up to 10 years, giving you peace of mind in maintaining a hygienic environment.

What We Like
Long-lasting waterproof finish
Prevents mould growth
Suitable for high humidity areas
Flexible and versatile use
#TOP 9

UniBond Mould Resistant Sealant for Kitchens and Bathrooms

2646326
White
1x208g
UniBond Mould Resistant Sealant for Kitchens and Bathrooms Cover
UniBond Bath & Kitchen Sealant, Mould Resistant White Silicone, Ideal for Showers, Toilets, Tiles, Worktops & More, Durable & Waterproof, Easy Bathroom Sealant, 1x208g Easy Pulse

The UniBond Bath & Kitchen Sealant makes sealing your bathroom and kitchen a breeze. You can easily apply it without a sealant gun, saving you time and hassle. Its anti-mould properties help keep your space fresh and clean by preventing unwanted mould growth. The unique technology ensures a smooth application, allowing you to enjoy a pleasant experience. With its waterproof formula, this sealant sticks quickly and lasts for years, providing peace of mind against leaks and moisture damage.

What We Like
Easy to apply
Anti-mould protection
Durable and waterproof
No sealant gun needed
Quick curing time
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What is anti-mould sealant?

A superior anti-mould silicone sealant guaranteed to prevent mould, mildew and bacterial growth for up to 10 years. Remains permanently waterproof making it suitable for sealing applications in areas of high humidity such as kitchens, shower bases and cubicles, baths, wet rooms, sanitary ware, etc.

2. How do you prevent mould from sealant?

Clean the sealant regularly with a good anti-mould cleaner or even just white vinegar. Wipe the seals after every shower or bath to ensure that it remains as dry as possible. Also think about the products which you use in your shower or bath.

Editor's Notes

During our anti-mould sealant research, we found 271 anti-mould sealant products and shortlisted 9 quality products. We collected and analyzed 203,772 customer reviews through our big data system to write the anti-mould sealants list. We found that most customers choose anti-mould sealants with an average price of £6.30.

The anti-mould sealants are available for purchase. We have researched hundreds of brands and picked the top brands of anti-mould sealants, including Unibond, Dryzone, Everbuild.

Written by
Corey Phillips Avatar

Corey Philips is an electrician and lighting expert. He graduated from the University of Birmingham in 2012 with a Bachelor's degree in electrical and electronics engineering. Corey is a specialist contractor in lights. He sells and installs and recommends lights and lamp sheds, and other lights accessories. Aside from that, Corey is vast in installing and maintaining electrical appliances like air conditioners, water heaters, and the likes.