White silicone sealants are often dotted with black mould in bathrooms as a result of high moisture and humidity levels that come from frequent showers and poor ventilation. As well as looking ...

You might be halfway through scrubbing your bathroom tiles in the shower when you spot a dark, spreading shadow creeping along the silicone sealant from the corner of your eye - mould. Black mould isn ...

Dark marks on silicone sealants are typically mould and can be caused by high moisture levels, poor ventilation, organic residue on the sealant (such as soap, shower gel and shampoo), and high ...