The door gap to the floor should be 5 8 to 3 4 inch.
Large gap between door and floor.
This number is regardless of flooring.
This is a simple solution to your problem.
When we remodel manufactured home we almost always replace the interior doors with new and better ones.
Shim it and nail it and hang the trim.
Under all the door casings there is a gap between the casing and the hardwood floor.
This is what i particularly suggest for the front door to keep our.
It is about a little less than a 1 4 of an inch.
Open the door fully and slide on the door sweep at the bottom of the door.
Because smaller gaps will transfer the air as efficiently as larger gaps there is no real reason the gaps need to be 3 inches.
They have long adjustable sides that can be moved.
This is the alternative to using a door sweep.
Press a closed cell foam backer rod into the gap starting at the corner.
It should be measured from the floor surface to the bottom of the door.
If you have a large gap beneath the door use a wrap around door sweep.
If you have a large gap at the bottom of your door that may be helping the door to stay plumb.
There is an approximately 1 5 gap at the bottom of the doors.
Measure the gap between the door and the floor.
First of all you have to decide on the size of the garage door bottom seal you require.
The larger the gap the more sound that seems to transfer between rooms.
Here the gap is the distance between the floor and the bottom of the door.
The foam should be the same diameter as the width of the gap.
Foam backer rod is a flexible rope that compresses to fill.
Reset the door so that it is level and plumb.
Pop the door and frame cut the jambs down by a half inch and re install with the jambs hard down.
As we are focusing on uneven floors mostly you need to measure the size of multiple gaps your garage door has from the floor.
I think it is too big and think a 1 4 1 2 gap would accommodate any unevenness in our floors and allow us to use area rugs.
The contractors tried to seal it using caulk but it doesn t look so great in my opinion.
Check that the stud walls on either side are plumb before you get into bigger issues.
This allows for proper air exchange between rooms.