I made a quick video on how to undercut door jambs for laminate flooring it is a diy job most people could undertake themselves if the have some basic tools.
Laminate under door trim.
If your flooring runs parallel with the door you ll likely have only one piece of laminate to trim.
If there s a gap under your door casing and also a gap between two rooms under a door where two different installations of laminate flooring join you can install t molding to hide both gaps.
The 1 2 inch gap is for the doorway only.
Note that you will leave the standard 1 4 inch expansion gap on either side of the doors.
When installing laminate flooring obstacles such as doors present a problem because you have to make cuts for a correct fit.
Measure on the inner jamb as well as both sides of the door where the trim is located.