Introduction

Silicone sealant is best for use in the bathroom, shower and around the bath. The best silicone sealant will protect your home from water damage caused by leaks and the build-up of mould or mildew. There are many different types of silicone sealants to choose from, but only the five best ones will be discussed in this blog post.
Are you looking for the best silicone sealant to protect your home from water damage?
Protecting your home from water damage caused by leaks and the build-up of mould or mildew can be a challenge.
When applying bathroom sealants, we recommend removing as much of the existing sealant as possible and using a sealant gun. You should also ensure that the area is completely dry and free from oil and other contaminants.
Which sealant should you choose, and is there a difference between bathroom sealant and shower sealant?
Before you reapply silicone sealant, make sure you remove all the old sealant. Check out our top tip for removing old sealant
Our top picks for Best Silicone Sealant
DOWSIL 785 Sanitary Acetoxy Silicone
The best silicone sealant for the bathroom, shower, shower trays and around the bath is DOWSIL 785 Sanitary Acetoxy Silicone.
This bestseller from DOW (Dow Corning) has been specifically designed to seal sanitary fittings to resist mould growth. It contains a fungicide that resists bacteria growth, MRSA, E. Coli and Salmonella, which can be common in bathrooms in a high humidity environment.
The finish is a high gloss and is resistant to ozone, ultra-violet radiation and temperature extremes, making it perfect for use in these environments.
Sanitary fittings such as baths, showers and sinks can be sealed quickly and easily with this silicone sealant which is mould resistant, anti-bacterial and copes well with temperature extremes.
The high gloss finish protects against ultraviolet radiation and ozone, making it our top pick and perfect for use as a bathroom sealant or shower sealant.
Pros:What customers are saying…
Everbuild Stixall Extreme Power
Stixall is the seemingly impossible hybrid of silicone and polyurethane that has been designed to provide an amazing high-grab adhesive.
This primerless adhesive will bond glass, metals, plastic, concrete, plasterboard, polyester, Perspex, wood, enamel, painted surfaces and much more
The ideal bonding agent for most surfaces, you can use it in the kitchen and bathroom for both sticking items such as mirrors to walls and then sealing around the edges of showers, baths and sinks. It even works well in automotive situations!
This product can be overpainted if required, which is very unusual for a sealant and often a downside compared to caulk.
You will need a good quality applicator gun as Stixall is more viscous than most other products
Pros:What customers are saying…
Gorilla All Conditions Sealant
The best silicone sealant for your bathroom and shower is Gorilla All Conditions Sealant.
This product is fast-setting, can be exposed to water after just 30 minutes and will not yellow, shrink or crack over time. It also has many other features that make it the best option when considering bathroom or shower products including its ability to repel mould and mildew as well as being usable on a variety of surfaces.
For use on Porcelain, Metal, Vinyl, Laminate, Stone, Ceramic, Stainless Steel, Granite, Wood, Glass
Whether you are completing an indoor or outdoor project, Gorilla All Conditions Sealant is the best option and will provide long-lasting results.
What customers are saying…
Unibond Triple Protection Anti-Mould Silicone Sealant
Tired of mould and mildew taking over the bathroom, kitchen or any other tiled area in your home? Unibond Anti Mould Sealant offers Triple Protection and might be just what you need. It is best for use in bathrooms, showers and kitchens due to its super anti-mould properties. This sealant also repels water and is flexible and durable, making it ideal for challenging conditions. Plus, it dries quickly so you can get on with your day!
So, if you are looking for a very good quality sealant that is mould resistant, so will prevent mould growth, be a durable sealant and provide a tight seal where it is needed most for sealing showers and wet rooms this is better than most bathroom sealants.
Pros:What customers are saying…
Everflex Premium+ 500 Bath & Sanitary Silicone
If you’re looking for the best bathroom sealants for around your bath and shower trays, look no further than Everflex Premium+ 500 Bath & Sanitary Silicone. This sealant is perfect for high humidity areas such as bathrooms, toilets, showers and kitchens, and its permanently flexible design ensures a waterproof seal that’s quick-curing and low dirt pick-up.
Plus, it won’t discolour on ageing even in humid or damp conditions, making it a great choice for any bathroom or shower.
Pros:What customers are saying…
Summary
When it comes to choosing the best silicone sealant for your bathroom and shower, it is important to consider all of the features and benefits of each product. Every product on our list is a good silicone sealant and should be considered.
Consider each product’s features and benefits to make the best decision for your needs. You will want a product that:
FAQs
What are the pros and cons of silicone?
Pros
- Silicone is highly elastic, and any movement in the joint should be tolerated
- Silicone will adhere well to any smooth surface
- Because of its elasticity, silicone won’t tear and can provide a rubber seal which is why it’s better than acrylic caulk and better for larger joints.
- Silicone is ideal for rooms with higher moisture levels as it is water-resistant and can be anti-mould
- Ideal for sealing around baths, sealing showers and other sanitary ware
- It’s cold and heat resistant
- Silicone is available in different colours, including white, clear, black, grey
- You should use sanitary silicone in bathrooms which contains a fungicide to prevent mould
Cons
- You can’t paint over silicone
- When it’s dry, you can’t apply another layer on top
Which is the best sealant for showers?

The best sealant for showers is DOWSIL 785 bathroom sealant.
This product provides a watertight, flexible seal, cures quickly, and is UV-resistant is an anti-mould sealant & mildew-resistant. Different best sealants for the bathroom or shower will have different features, so it’s important to consider this when making your purchase.
What is the best bath sealant?

DOWSIL 785 is the best bath sealant.
Is silicone or caulk better for showers?
Silicone is better for shower rooms and bathrooms in general as it tolerates moisture much better than caulk
How do you seal the bottom of a shower?
The best way to seal the bottom of a shower is with silicone. This product provides a watertight flexible seal, cures quickly, and is mould & mildew-resistant.
What is the best silicone sealant for bathrooms?
The best silicone sealant for bathrooms is DOWSIL 785. This product is made from high-performance acetoxy silicone with anti-fungal properties, cures quickly and provides a tack free, completely waterproof seal.
How long should shower sealant last?
A silicone sealant should last anywhere from two to five years, but each application will vary.
What is the best caulking to use around a bathtub?
We recommend using silicone sealant around bathtubs as it is waterproof and mould resistant whereas caulk is not
How long should sealant last around a bath?
A silicone sealant should last anywhere from two to five years, but each application will vary.
Should I fill a bath before sealing?
Yes, the bath should be half-filled with water before you apply bathroom sealant with a caulking gun around the edges of the bath as the weight of the water will enlarge any gaps. When the sealant is cured, the bath can be emptied and gaps will compress. If the sealant was applied with the bath empty the weight of the bather would pull the sealant and over time the sealant might come unstuck.
How do I remove black mould from silicone sealant?
Please see our how to remove black mould