The standard i use is 1 2 over finish floors 3 4 is acceptable.
Space between door and floor.
During installation of a frame and during the initial formation 1 2 cm gaps should be left for foaming.
Transfer this measurement to the threshold put on a pair of safety glasses and cut it to this length with a hacksaw or jigsaw.
I have never seen a door set with that big of a gap unless it was to get past floors that were not level.
This number is regardless of flooring.
How to create gaps when installing interior doors.
If each room has individual air returns the numbers can be smaller for personal taste.
It should be measured from the floor surface to the bottom of the door.
This allows for proper air exchange between rooms.
Gaps between door casing and laminate flooring are common and manufacturers have designed a wide variety of special pieces for this purpose.
To fix the issue the doors need to be removed bottom of the jambs cut and reset the door.
The door gap to the floor should be 5 8 to 3 4 inch.
Measure the distance between the door frames at the floor.
That is a lot of room for unlevel you have there.
A gap of 4 cm is allowed for convenient and safe door opening.