Key Facts

Product introduction / description:

Pattex Sanitary Silicone is a one component fast-curing and ready-to-use silicone sealant for sanitary joints (acetoxy type). It will bond to form a durable, flexible waterproof seal on many common wet-area building materials. It is suitable for both indoor and outdoor applications. Pattex Sanitary Silicone contains fungicide and is UV and water resistant.


Product main benefits:

  • Good adhesion to a variety of non-porous surfaces
  • Fungus and mildew Resistance
  • Flexes with movement
  • Weather resistant (UV, rain, frost, ozone, salt, etc)
  • Low modulus elasticity


  • weather proofing or bonding applications where protection against fungal growth is required
  • sealing joints for baths, basins and showers
  • sealing joints in ceramic tiles and plumbing fixtures
  • suitable for use in bathrooms, kitchens and cold rooms

Step by step

1. Surfaces must be clean, dry and free from grease and dust. Non-porous surfaces, such as aluminum, glass etc, should be cleaned with a suitable solvent.

2. Pattex Sanitary Silicone is ready to use. After suitable joint preparation and masking, the sealant is gunned into place and tooled within 5 to 10 minutes, using a Pattex Sealant Profiler Tool. Masking tape is then removed immediately. Uncured material can be removed by using a solvent. Cured material may be removed by abrasion or other mechanical means.

3. The sealant joint width should be designed to accommodate the movement capability of the sealant. In general, the minimum joint width should be 6mm. For joints between 6-12mm wide, a seal depth of 6mm is recommended.

For joints above 12mm wide, a width to depth ratio of 2:1 should be used, up to a maximum depth of 12mm. In situations where fillet joints are needed, a minimum of 6mm sealant bite to each substrate is recommended. Bond beaker tape or a backer rod should be used as back-up material to provide backpressure and avoid three-sided adhesion that limits sealant movement capability.