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Seal Your Leaking Shower

What is Shower Plug?

Shower Plug is a clear, brush-on liquid that waterproofs tiles, grout and masonry.
It is ideal for:
- Fixing and preventing leaks through tiles and grout
- Preventing mould growth
- Preventing efflorescence
- Making tiles and grout easier to clean.

Shower Plug is 100% UV resistant and can be used outdoors to waterproof balconies, driveways and building facades.

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The Shower Waterproofing Solution, Explained.

Leaks occur when water finds a way through porous tiles and grout, whether they are cracked or not. The membrane below is prone to failure through multiple causes, and when it fails, structural damage results from the unchecked water leak.

To fix or prevent a leak, the surface needs to be treated with Shower Plug. By simply brushing Shower Plug on, the surface is made totally waterproof and ready to use within 18 hours. No tiles are removed, and in fact the surface appearance and texture will not be changed. Shower Plug is not affected by daily use or detergents.

Shower Plug will protect any masonry surface from all forms of water damage, including: efflorescence, mould, algae, discolouration, erosion and concrete cancer.


How Shower Plug Works.

Shower Plug is a penetrating sealer. When applied, it penetrates the substrate's surface to a depth of 2-5mm and chemically bonds with the sand-cement particles. It forms an invisible, hydrophobic barrier that causes water to bead and run off the surface. This water-repellency lasts for a minimum of ten years. 

The Leader in Penetrating Sealers

australia logo

Shower Plug is the original sealant technology in Australian DIY

lab testing

Designed, produced and tested in Australia by leading, PHD-level chemists

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Appraised by the CSIRO, UNSW and VICUT

glass test tubes

Formulated from the highest-grade raw materials available

20 years logo

No known failures in its 20+ year history

paint off brush

Safer than household paint


DIY Bathroom Sealant Application Process

How to fix a leaking shower without removing tiles in 3 steps.

what you'll need
grout application

Regular superfine grout or sand cement grout

brush bristle

Natural-bristle brush

cleaning tiles with cloth


shower plug 220ml

Shower Plug

silicone tube

Bathroom silicone sealant

Watch the DIY Guide

We demonstrate how to apply Shower Plug to fix a leaking shower.

1. Preparation: repair

  • First of all, if there are any cracks in the tiles and grout greater than a hairline, they must be repaired using regular superfine grout.
  • Allow the repair grout to dry for 24 hours.
  • Any cracks less than a hairline will be sealed by Shower Plug alone.
  • Clean any mould using bleach.
tile preparation
sealant application on tiles

2. Application of Shower Plug: the two-coat process

  • Apply an even coat of Shower Plug covering the entire surface area, starting on the walls.*
  • Wait 5 mins and then repeat this process.
  • Wait another 5 mins and then wipe away any excess.
  • Using a natural-bristle brush, apply one coat covering all surface area evenly with a layer of Shower Plug.
  • Wait five minutes and repeat.
  • Wait five minutes and then wipe away any excess. 


*A tip for vertical surfaces:
Begin the two-coat process at the top of the wall and work down to the floor. Complete the walls first and then begin the two-coat process on the floor.

3. After application of Shower Plug

Finally, after applying Shower Plug, it is recommended to apply a silicone strip between the wall and floor joint. This is because building movement is known to cause cracking in the joints.

For more information, our blog has a detailed step-by-step guide on shower waterproofing and how to repair your leaking shower.

silicone sealant application

Handling and Storage

Follow good industrial hygiene procedures. Vapour inhalation and skin or eye contact should be avoided. Therefore, we recommend the use of gloves, goggles and an air filter mask when applying Shower Plug. Wash hands after handling.  Store in a closed container in a cool dry, place away from any fire and ignition sources. Shower Plug has a shelf life of up to five years in a sealed container under 25°C.


Purchase Shower Plug Now

Seal your masonry and tiles with premium quality penetrating sealer technology.

Purchase Shower Plug now through our website or head to your local Bunnings warehouse.


The information given above is based on many years of experience and is correct to the best of our knowledge. As the storage, handling and application of this material is beyond our control, we can only be responsible for the quality of our product at the time of dispatch. We reserve the right to alter certain product parameters within the spectrum of properties in order to keep abreast of technological advances. It is the responsibility of the end-user to determine the suitability of this material for any particular application.