5 Places Mould Could Be Growing in Your Bathroom

14 September 2021
 Categories: , Blog


Moist environments are the ideal breeding ground for mould and mildew, which makes your bathroom the perfect place for it to grow. Mould can form on any surface where wetness and condensation accumulates and is left untouched, so there are several spots in your bathroom where mould could be hiding. Read on to learn about the most common ones so you can get on top of tackling the issue. 

1. Shower and bathtub grout

Since your shower base and bathtub are frequently rinsed out with clean water, you're unlikely to find mould growing on their surface. The grout around your bathtub or on the walls of your shower, however, is a different story. Water and cosmetics residue quickly accumulates on grout and it doesn't evaporate from the porous surface quickly, creating the strong levels of humidity that mould thrives in. Mould also prefers warm environments, which means your bath and shower steam only makes the problem worse.

2. Behind the shower curtain

Another place you should pay extra attention is behind your shower or bathtub curtain. This is another area where water accumulates and rarely gets cleaned away, which is why it's so common for mould to grow there. 

3. Sink

Your bathroom sink is another particular wet bathroom spot, making it a prime candidate for mould. Just remember to look beyond the basin of your sink. Crevices and seals around the countertop, cosmetics caddies, taps and so on often harbour unsuspected mould. If you have a cabinet under or above your sink, that's another spot you need to check, particularly if you often store damp objects like sponges. 

4. Around the toilet

Considering that cleaning the toilet is a job most people want to get over and done with as quickly as possible, few clean well enough to notice mould growth around the toilet itself. Underneath the toilet bowl, around the pipes and in or around the tank are all places where mould spores multiply, especially if you've had any leaks in the past.

5. Walls and floor

Ever noticed discolouration on your bathroom's walls or around your floor? It may actually be mould growth. Even if your walls and floors don't directly get wet, moisture in the air can cling to them and allow mould to grow. Mould growth on walls often appears as dark and speckled patches, though it can sometimes look like general water damage. In particular, wall mould often grows at the very bottom of the walls (where water gets splashed) or at the very top (due to rising condensation). As for the floors, keep a close eye on corners that don't get cleaned or checked thoroughly. 

To learn more, contact a mould removal service.