SHOWER SILICONE SEALANT
Bostik Shower is a shower silicone sealant for a durable, flexible, and watertight seal in bathrooms and wet areas. This waterproof silicone resists mould growth, UV exposure, and everyday cleaning products, helping maintain a clean and long-lasting finish. Suitable as a bathroom silicone sealant alternative for sealing around baths, showers, sinks, and sanitary fittings, it adheres strongly to non-porous surfaces and remains flexible across a wide temperature range. This reliable bath seal solution is ideal for DIY and renovation projects.
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Features & benefits
Bostik Shower is a high-performance shower silicone sealant designed for durable, long-lasting sealing in wet areas. This waterproof silicone sealant forms a permanently flexible, watertight bond, making it suitable for bathrooms, showers, and sanitary fittings. It offers excellent resistance to UV, ageing, water, and household chemicals while remaining flexible from -45°C to 150°C
The formulation contains a fungicide to resist mould growth and maintain a clean seal over time. Its non-sag consistency allows for easy vertical application, while strong adhesion to non-porous surfaces ensures reliable performance in demanding bathroom environments.
Surface Compatibility
Bostik Shower waterproof silicone adheres to ceramics, glass, enamel, porcelain, coated wood, painted surfaces, stainless steel, aluminium, and selected plastics. It also performs as an adhesive where an elastic, gap-filling bond is required.
Smart advandtages
Mould resistant
100% waterproof
Permanently flexible
Low shrinkage
Non yellowing
Downloads & resources
Bostik DIY South Africa Seal - Shower Silicone Sealant Technical Data Sheet (435.88 KB)
Bostik DIY South Africa Seal - Shower Silicone Sealant Safety Data Sheet (86.44 KB)
How to use
Applications
Suitable for sealing around baths, showers, sinks, toilets, and kitchen fittings. This bath silicone and sealant is designed for sanitary applications where a clear, waterproof seal is required.
Ensure surfaces are clean, dry and free of loose materials, dust, grease, rust and other contaminants. Use masking tape to get a clean, even sealant line and to eliminate cleaning difficulties on porous surfaces. Remove tape before sealant skins.
90ml Tube
- Remove the cap and pierce seal with reverse side of cap.
- Cut the nozzle to desired bead size and screw onto tube.
- Apply silicone at a slight angle in a continuous bead to the prepared joint.
- After use, remove the nozzle, wipe clear and replace the cap firmly.
280ml Cartridge
- Cut the tip off the cartridge and screw on the nozzle.
- Cut the tip of the nozzle at an angle to achieve the desired bead size.
- Apply with a caulking gun in a continuous bead to the prepared joint.
- Remove unwanted silicone immediately.
- Smooth down after application within 3-5 min before skin formation occurs, by using a flat or rounded tool.
- Sealant dries to touch in approximately 45 minutes and reaches full cure after approximately 24 hours.
Limitations
- Not suitable for alkaline surfaces such as concrete, plaster, or marble, and may corrode certain metals including copper and zinc.
- Not suitable for mirrors or natural stone, and will not adhere to plastics such as polyethylene or polypropylene.
- Contains a fungicide and is not suitable for aquariums.
- The sealant cannot be painted and should not be applied in very low humidity conditions below 10%.
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FAQs
How do I store my silicone?
To maximize the shelf life of an opened silicone cartridge, we recommend that the nozzle be removed and a piece of plastic placed over the cartridge tip after which the nozzle must be screwed back on. A large screw inserted into the nozzle tip also helps to extend the life. Store in a cool environment.
How do I remove cured silicone?
Cured sealant must be removed mechanically with a sharp knife or chemically with Bostik Silicone Stripper. Always test on a small surface first.
Which sealant is the right one for my application?
Our Glue Guide can help you find the best adhesive for your application.
How to clean silicone sealant?
For best results, clean silicone sealant while it is still uncured using a solvent such as turpentine or paraffin and a clean cloth. Once cured, the sealant can only be removed mechanically, for example with a sharp knife, or with a dedicated silicone remover.
How to dissolve silicone sealant
Cured silicone sealant cannot simply be dissolved. It must be removed either mechanically or by using a specialised silicone stripper designed to break down the material.
What is the shelf life of the adhesive i bought and where can i store it?
The shelf life of adhesives varies from product to product, but typically ranges between one and two years from the date of manufacture when unopened and stored correctly in dry conditions - usually between +5°C and +25°C. Once opened, the life of the product will be more limited – this is dictated by variables including the type of adhesive, how it is stored, and how much adhesive is left unused. For more information, refer to the product’s Technical Data Sheet.
I need more technical advice on this product?
Please call our Sticky Questions toll free helpline during office hours on 0800 222 400, or send an email [email protected].
How do I clean my applicator tools?
Wet and dried adhesive on applicator tools can be cleaned with acetone, thinners or parrafin. Please refer to the Technical Data Sheet of the specific product for more information.
Can I use alcohol to clean silicone?
No. Alcohol based cleaners should not be used for cleaning surfaces as alcohol inhibits the cure of silicones. Soaps or detergents used to clean the surface must be rinsed away thoroughly with clean water to ensure that all traces of the soaps are removed before sealing.
Stuck on what glue to use?
Use this guide to find out what product to use for your job.
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