The 6 best bathroom sealants for a smart, fresh finish

green bathroom tiles and bathroom sealant being applied with a caulk gun
(Image credit: Getty Images/lucentius)
Best bathroom sealants: Quick menu

1. The list in brief  
2. Best overall: UniBond Anti-Mould Sealant
3. Versatile All-rounder:  Everbuild Everflex 500
4. Fasted working: Gorilla Mould Resistant Seal
5. Trademan's Choice: Dowsil 785 Sanitary Sealant
6. Best For Mould: Everbuild Anti-Mould Sealant
7. Best For Small Bathrooms: 151 Silicone Sealant
8. How to choose 
9. How we test

To make sure your bathroom design remains looking as good as new for as long as possible, it's crucial to invest in a quality sealant. This will ensure that your space remains fresh, dry, clean and, crucially, free from unsightly and potentially harmful mould. 

You can trust Homebuilding & Renovating. Our expert reviewers spend hours testing and comparing products and materials in order to help you choose the best for your home and garden. Find out more about how we test.

Jack Woodfield
News Editor

Jack has worked in journalism for 11 years and was the News Editor for Homebuilding & Renovating from 2019 until the beginning of 2023. He strives to break the most relevant and beneficial stories for self builders, extenders and renovators, including the latest news on the construction materials shortage and hydrogen heating. In 2021 he appeared on BBC's The World at One to discuss the government's planning reforms. 

He enjoys testing new tools and gadgets, and having bought his first home in 2013, he has renovated every room and recently finished a garden renovation.

With contributions from