Black mould on sealant is a common issue in UK homes, especially in bathrooms, kitchens, and around windows where moisture levels are high. It can be stubborn, but it is possible to remove black mould from sealant.
Why does black mould grow on sealant?
Black mould thrives in damp, humid environments with poor ventilation. It often appears on bathroom and kitchen sealants due to the high moisture levels from steam and condensation. Poor ventilation can also be the culprit. Buildup, such as soap scum, which feeds mould spores, can also be the cause. If left untreated, mould can spread and weaken the sealant, causing it to crack. The London borough of Haringey received more complaints about mould and damp than any other local authority area recently, according to data. It received 30.71 complaints per 10,000 units.
How can I remove black mould from sealant?
It is possible to remove it with some DIY. Mix a solution of one part bleach to four parts water. Apply the solution to the affected sealant using a clean cloth or sponge. Leave it for ten to fifteen minutes to kill the mould spores. Scrub the area gently with an old toothbrush to remove the stubborn mould, and rinse thoroughly with clean water and dry the area. You can also use white vinegar as an eco-friendly alternative. Spray neat white vinegar directly onto the mould. Let it sit for at least an hour to break down the mould. Scrub with a brush, then rinse with warm water. Vinegar is a natural mould remover and helps prevent regrowth. A bathroom sealant is useful for combating damp problems and it can be obtained from suppliers such as https://www.ct1.com/product_application/sealing-your-shower-tray-with-bt1-bathroom-sealant.
How can I prevent black mould from growing in my home?
You can improve the ventilation in the home, wipe down the wet surfaces after showers or cooking, use a dehumidifier in high-moisture areas, and apply mold-resistant sealant when replacing old sealant. However, if the mould is embedded, replacing the sealant is the best solution. Regular maintenance and good ventilation can help keep your sealant mould-free.
