I would like to use this product to fill holes due to it bring good for sensitive people: https://auropaint.co.uk/product/natural-wall-filler-no-329/
However it says that it is micro poros which means it allows water vapours to go through.
Does this mean if I use it to fill a hole in my bathroom, and there is mold inside the wall, moisture will be able to travel through the filler and fuel mold growth on the other side? Conversely can mold vapors travel through the filler also?
Thanks.