Best Anti-Mould Sealants of 2025

Corey Phillips Avatar
Corey Phillips
Last Updated: 9 Feb 2025

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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
UniBond Re-New Sealant for Kitchens and Bathrooms Cover #TOP 3
UniBond Re-New Sealant for Kitchens and Bathrooms
ftb score rating icon 9.5

Top 10 Anti-Mould Sealants

#TOP 1

UniBond Waterproof Anti-Mould Sealant for Kitchen & Bathroom

2079356
White
1 x 274 g
UniBond Waterproof Anti-Mould Sealant for Kitchen & Bathroom Cover
UniBond Anti-Mould White, Waterproof Mould Protection Kitchen & Bathroom Sealant, Long-lasting White Silicone Sealant, Powerful Shower 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 (310 ml White) 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

UniBond Re-New Sealant for Kitchens and Bathrooms

1944413
Renew White
1 x 80 ml
UniBond Re-New Sealant for Kitchens and Bathrooms Cover
UniBond Re-New, White Silicone Sealant for Kitchen & Bath, One-Step Bathroom Sealant Renewal, Waterproof Shower Sealant with Triple Mould Resistance, 1 x 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 4

Dryzone Clear Anti-Mould Sealant for Home Use

Anti-Mould
clear sealant
Dryzone Clear Anti-Mould Sealant for Home Use Cover
Dryzone Anti-Mould Silicone Sealant (310 ml Clear) 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 Speed Seal Sealant for Bathrooms

2078485
White
291g
UniBond Speed Seal Sealant for Bathrooms Cover
UniBond 2078485 Speed Seal Sealant, 1x291g Cartridge , White

The UniBond Speed Seal is designed for quick application in bathrooms and kitchens. It dries rapidly, allowing you to use your space after just one hour, which is perfect for busy households. The specially formulated anti-mould properties make it ideal for humid environments, preventing unsightly mould growth. Additionally, the sealant creates a hygienic, waterproof barrier that ensures a long-lasting seal. With easy application, you can tackle home repairs efficiently and enjoy peace of mind from its durability.

What We Like
Fast drying within one hour
Anti-mould protection
Waterproof and hygienic seal
Easy to apply
Long-lasting performance
#TOP 6

Everbuild Acrylic Sealant for Kitchens and Baths

BATHWH
White
290ml
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 7

UniBond Anti-Mould Sealant for Kitchens and Bathrooms

2079321
White
1 x 147 g
UniBond Anti-Mould Sealant for Kitchens and Bathrooms Cover
UniBond Healthy Kitchen & Bathroom Sealant, Anti Mould Silicone Shower Sealant, Ideal for Toilets, Tiles, and More*, Durable & Waterproof Bathroom Sealant, White, 1 x 147g 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 8

EVO-STIK Sanitary Silicone Sealant, Mould Resistant

30613471
White
EVO-STIK Sanitary Silicone Sealant, Mould Resistant Cover
EVO-STIK Sanitary Silicone Stay White, Premium Sanitary Sealant, Stops Mould, Stays White for Life, 290ml

The EVO-STIK Sanitary Sealant is a premium quality product designed to keep your bathrooms and kitchens looking pristine for life. Its moisture-curing properties mean it won’t stain, blacken, or yellow over time. You will appreciate its mould resistance, as it effectively prevents the growth of mould and fungi, ensuring a hygienic environment. With excellent adhesion to non-porous surfaces, it is perfect for sealing around tiles, baths, and sinks, providing you with a durable and clean finish. Additionally, it is versatile enough to work on various materials like glass and ceramics.

What We Like
Long-lasting white finish
Mould and fungi resistant
Excellent adhesion
Works on multiple materials
Maintains hygiene in wet areas
#TOP 9

Hemway All-In-One Hybrid Polymer Sealant & Adhesive

5056203718629
Bright White
1 Pack
Hemway All-In-One Hybrid Polymer Sealant & Adhesive Cover
Hemway - Construction All-In-One Hybrid Polymer Sealant & Adhesive - Bright White | Anti-Mould, Waterproof & Paintable | 300 ml

The Hemway Hybrid Sealant is a versatile product that combines the flexibility of silicone with the paintability of acrylic caulk. This makes it perfect for various applications, including construction and renovation projects. It delivers a bright white finish on multiple surfaces such as wood, glass, and concrete, allowing you to achieve a seamless look. Additionally, its anti-mould and waterproof features ensure long-lasting protection against moisture and UV exposure, making it ideal for areas prone to dampness.

What We Like
Versatile for multiple surfaces
Anti-mould and waterproof
Quick curing time
Eco-friendly formulation
#TOP 10

UniBond Triple Protection Mould Sealant

2493986
UniBond Triple Protection Mould Sealant Cover
UniBond Triple Protection Stop Mould Silicone Sealant For Kitchens and Bathrooms, Clear Sealant, Repels, Kills and Prevents Mould Growth, Long-Lasting Shower Sealant, 1 x 291 g Cartridge

The UniBond Mould Sealant features a Triple Protection formula, effectively repelling, killing, and preventing mould growth in your kitchen and bathroom. This long-lasting sealant is designed to be waterproof, ensuring flexibility and durability in challenging conditions. You can use it on various surfaces, including showers, sinks, and baths, making it a versatile choice for your home. With a quick touch-dry time of just 20 minutes, it allows you to get back to using your space sooner.

What We Like
Effective mould prevention
Flexible and durable
Quick touch-dry time
Multi-purpose application
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 109 anti-mould sealant products and shortlisted 10 quality products. We collected and analyzed 180,976 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 £7.20.

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, EVO-STIK, Hemway.

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.