The 6 best bathroom sealants to keep your bathroom fresh and clean

Young woman sealing joints with a plastic composition and the help of a sealant gun in a bathroom
(Image credit: Getty Images)
Best bathroom sealants: Quick menu

what is the best bathroom sealant?

(Image credit: getty images)

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 get the most out of your bathroom design, it's crucial to invest in a quality sealant to ensure that your space remains fresh, dry, and clean. 

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.

Black Friday Deals:

Black Friday Deals: Everbuild Everflex 500 Silicone Sealant 

RRP £5.52 | Now £3.95 From Amazon

This highly rated silicone sealant sits high on our buyer's guide for its ability to provide long-lasting anti-fungal protection. When purchased during Black Friday you can save 28% off the RRP. 

Black Friday Deal:

Black Friday Deal: 151 Silicone Sealant

RRP: £6.30 | Now £4.30 From Amazon

This affordable bathroom sealant is ideal for minor bathroom repairs like tiles and is currently on sale for only £4.30. You can also stock up by bulk buying <a href="" data-link-merchant="Amazon UK"" target="_blank" rel="nofollow">6 x 70g tubes for only £14 from Amazon. 

Jack Woodfield
News Editor

Jack has worked in journalism for 11 years and is the News Editor for Homebuilding & Renovating, a role he has had since 2019. 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