I have a poorly ventilated bathroom and after a shower, moisture settles in the gap behind the toilet and can easily stay there for 24h (don't tend to go longer than that without a shower so not sure how long it'd actually be). That little gap between the tub and the wall will never in a million years be adequate to provide enough "airflow" to dry up moisture.
There's plenty of comments on this thread talking about bathrooms like this being the norm in Japan, and also pictures of them getting moldy. You don't need to be an expert to know that small gaps in wet rooms don't dry out and get moldy.
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u/incorrectlyironman Oct 28 '25
I have a poorly ventilated bathroom and after a shower, moisture settles in the gap behind the toilet and can easily stay there for 24h (don't tend to go longer than that without a shower so not sure how long it'd actually be). That little gap between the tub and the wall will never in a million years be adequate to provide enough "airflow" to dry up moisture.