How to Remove Black Mould from Bathroom Silicone (Singapore HDB Guide)
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Black mould on bathroom silicone and tile grout is one of the most common problems in Singapore homes. Our humid weather, steamy showers and small HDB bathrooms with little airflow give mould everything it needs to grow. Here is how to remove it properly and stop it coming back.
Why sprays don't work on silicone
Mould grows into the silicone and grout, not just on top. Sprays run off vertical lines and corners before they have time to work, so the black spots fade a little and come back within weeks.
How to remove black mould with a gel
- Dry the area first. Gel sticks better to a dry surface.
- Apply a line of gel at least 3mm thick right over the mould.
- Leave it for 5 to 10 hours. Overnight is easiest, when nobody needs the bathroom.
- Wipe it off with a wet cloth and rinse.
For stubborn spots, repeat once more. Wear rubber gloves while applying.
Where to use it
- Shower and bathtub silicone
- Tile grout and bathroom corners
- Sink and basin edges
- Around the toilet base
- Washing machine and fridge door rubber
- Window frames and tracks
How to stop mould coming back
- Keep the bathroom door or window open after showers so the room dries.
- Wipe water off silicone lines once a week.
- Run the exhaust fan, if you have one, for 15 minutes after a shower.
- Deal with new spots early, while they are small.
The product we use
Our Extra Strong Mould & Mildew Removal Gel has a pointed nozzle that puts the gel right on the mouldy line, and it stays in place instead of running off. S$6.90 per 120g tube, or the 3-tube pack comes with a 4th tube free. Islandwide delivery from Singapore, free on orders S$40 and above.