Mouldy Bathroom Grout! Bleach, Vinegar, Methylated Spirits! What doesn't work & which one should be used sparingly?
Removing Mould From Your Bathroom
Okay, so most people when they have mould problems immediately reach for bleach, ammonia or marketed products such as Exit Mould. The trouble with these products is that they simply DO NOT KILL MOULD. You see mould/fungi contain melanin which gives it it’s colour. Bleach or bleach type products just removes the colour out of the mould. So effectively, bleach just masks the mould giving you the illusion of a mould free bathroom but the mould is still actually there, alive and growing.
The other problems with harsh chemicals like bleach and Domestos is that it will harm your grout. Not only have these chemicals been known to remove the colour from grout but they will also weaken the grout’s structure.
Vinegar is a great natural product when wanting to destroy or prevent mould growth. However it should be used with caution.
Vinegar penetrates the structure of mould and causes it to explode, which kills the mould.
Make your own vinegar solution from white vinegar using 70% parts vinegar and 30% part water. (Source: Dr Heike Neumeister-Kemp, Mycologist/mould expert).
The trouble with using vinegar as your go to cleaner is that it is an acid cleaner. Over time the acid in the vinegar will weaken the structure of your grout. If you must use vinegar we suggest to only use vinegar to kill mould initially, then only use it occasionally to keep mould at bay. Never use vinegar as your daily/weekly cleaner.
We approached ARDEX, an Australian grout manufacturer, about what type of cleaner should be used on grout. Here is what they had to say.
"Domestic and some commercial cleaners contain acidic components (such as Phosphoric Acid and
Methylated Spirits is the all round hero cleaner for your bathroom.
When it comes to killing mould, methylated spirits works the same way as vinegar. It penetrates the mould spores and makes the mould explode. (Source: Dr Heike Neumeister-Kemp, Mycologist/mould expert).
The best part about methylated spirits is that it is a neutral cleaner. This means it is safe to use on most surfaces in your bathroom, including grout. Methylated spirits is safe to use on glass, sinks, chrome taps, ceramic, stone, marble and grout. (Do not use on painted or varnished surfaces).
Another positive about methylated spirits is that it is readily bio-degradable, meaning that it breaks down quickly and naturally. It is safe for the environment.
To effectively kill mould, make your own methylated spirits cleaning solution with 80% parts methylated spirits and 20% part water.
How to Prevent Mould Growth in your new
Meet Julian & Shanna Driussi, a husband and wife team with over 20 years experience in the building industry. Sharing their knowledge and passion for bathroom renovations.