Stop Using Vinegar To Remove Sink Sealant Mould As A £1 Trick Creates A ‘waterproof Shield’

With autumn approaching, kitchens up and down the UK are becoming hotspots for mould and mildew. One of the most frequent areas this unsightly problem appears is the sealant around kitchen sinks, where water splashes, food residue and trapped moisture create the perfect conditions for growth.

 

With doors and windows often closed to keep out the chill, humidity levels in kitchens rise, and black mould starts to creep along the edges of sinks-yet experts warn that most homeowners are using the wrong method to get rid of it. Sarah Lewis, a sealant expert at Home Seal Solutions, explains that black mould on sink sealant is caused by water seeping into tiny gaps behind the sealant, a problem that even the strongest vinegar can't solve.

 

"Kitchen sink sealant might look smooth and secure, but over time, daily use-from hot water running to the weight of dishes-causes it to shrink and pull away from the sink edge by tiny amounts," she said. "Moisture gets trapped in those tiny gaps, creating a dark, damp space where mould spores thrive. Wiping it down with vinegar or other household cleaners only tackles the surface; the mould will just keep coming back, often worse than before."

 

She adds that mould on sink sealant has a "breaking point"-typically 8 to 14 months after it's applied. As temperatures drop and kitchens cool more quickly than other rooms, condensation builds up, speeding up the mould growth process. From late September onwards, as the weather turns colder, many homeowners will find that what was once cleanable mould becomes a permanent problem that keeps regrowing.

 

Thankfully, there's a simple, affordable way to beat this stubborn mould-and it costs just £1 in most supermarkets. Instead of spending hours scraping out old sealant (a messy, time-consuming job), you can use a self-adhesive sink seal strip. Sarah explains: "This trick works because it doesn't depend on chemicals to kill mould. Instead, it creates a physical barrier over the existing sealant, stopping water from ever getting to the gaps where mould grows."

 

To make this method work effectively, it's crucial to apply the strip correctly. First, thoroughly clean the area around your sink sealant, removing any existing mould, grime or food residue. Leave the surface to dry completely for at least 12 hours-any moisture left behind will prevent the strip from sticking properly. Once dry, peel off the backing of the self-adhesive strip and apply it directly over the old sealant, pressing firmly along the entire length to ensure a tight, waterproof seal.

 

"Unlike traditional sealant, which degrades over time, the self-adhesive strip is made from a flexible, durable material," Sarah said. "It doesn't shrink, crack or become porous, even with daily exposure to water and heat. Once it's applied, it forms a stable waterproof shield that mould simply can't get through-saving you time, money and the frustration of constant mould cleaning."