To fix the issue the doors need to be removed bottom of the jambs cut and reset the door.
Gap under wooden front door.
As with the top piece your side pieces will need to fit onto the door frame instead of the actual door and the foam should fill the gap around the door.
A visible door gap between the door and door frame.
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Check that the stud walls on either side are plumb before you get into bigger issues.
The standard i use is 1 2 over finish floors 3 4 is acceptable.
Reset the door so that it is level and plumb.
Let set then remove the excess.
Position the side pieces of weather stripping along the sides of your door frame.
If you have a good clean flake free gap from the outside i would use a good quality frame silicon.
Water leaking around the door or water leaking under the door or door bottom.
If you have a large gap at the bottom of your door that may be helping the door to stay plumb.
A drafty door with chilly drafts air blowing through your entryway.
The odds are you ll see a larger gap at the top of the door on the top edge that s above the handle or door knob.
I have never seen a door set with that big of a gap unless it was to get past floors that were not level.
That is a lot of room for unlevel you have there.
The door is probably touching the side jamb at the top of the door leaving no gap at all.
A door gap resulting in light under the door or peeking around the edges of the door.
If you ve noticed a large or small gap on the bottom.
Shim it and nail it and hang the trim.
It s supposed to be a uniform gap of one eighth inch on both sides of the door and along the top of the door.
The void i would use expanding foam from both sides.
Remove the frame screws from the hinge you identified but leave the.