Sanitary silicone formulations contain fungicides to help protect against mould growth in humid environments, such as bathrooms and kitchens. As a result, the sealant is able to actively combat mould growth for a long period of time. However, if ventilation is poor or soap residue remains on the sealant joint for long periods of time, mould may begin to form on the surface of the residue.
Main reasons for mould growth on silicone sealants
- High moisture content and poor air circulation
- Organic waste materials on the sealant surface (such as soap, body gel, food remnants etc.).
- Warm temperatures
- Using a silicone sealant without anti-mould properties
Stay Fresh Neutral and Stay Fresh Acetoxy silicone sealants both offer a lifetime guarantee on protection against discoloration due to mould growth. However, this does not remove the need for regular cleaning, as soap or other deposits on the surface of the sealant can grow mould.
How to prevent mould on silicone
There are several easy proactive steps you can take to help prevent the growth of mould on silicone sealants.
- Keep Surfaces Dry: Wipe down shower and bath areas after use to eliminate moisture.
- Clean Regularly: Use a non-abrasive cleaner to remove soap scum and dirt.
- Anti-Mould Silicone: Choose a premium anti-fungal bathroom silicone for better long-term resistance.