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.

Bostik Perfect Seal Shower Silicone Sealant in a 280 ml cartridge, shown upright with clear labelling. Suitable for sealing wet areas like showers, featuring visuals of a tiled shower base and icons for waterproof, mould resistant and easy application.
Buy now
Technical Data Sheet (435.88 KB)
Colours

Clear

+ See more
Sizes
90ml
280ml
+ See more
Features & benefits Downloads & resources How to use FAQs Related products

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)

Technical Data Sheet

Bostik DIY South Africa Seal - Shower Silicone Sealant Safety Data Sheet (86.44 KB)

Safety Data Sheet

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%.

Calculator

Select Packaging


What type of joint do you want?


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.

See all FAQs

Stuck on what glue to use?

gecko.png

Use this guide to find out what product to use for your job.

Start the Glue Guide