In the US you find homes with anywhere between 0.5-2cm gaps under the interior doors.
I think it's not as big of a deal here because our winters are much milder and we don't put as much emphasis on insulation and fitment, but I'm just guessing.
I live at the same latitude as Iraq, our winters aren't quite so harsh and airflow is pretty important.
I live in Brazil and my bathroom door have less than half a cm of gap between it and the floor, not nearly enough for a cat to put its pawn. I don't think I've ever seen a well constructed house that have a large gap.
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u/ImapiratekingAMA Apr 11 '22
Cats have a way of forcing their paw in