In the place we re modeled he did much of our trim work and like the op we had many jams that were not parallel nor flush with the walls.
Drywall extends past door jamb.
Use a measuring tape to record the distance from the drywall to the door edge to determine the length.
It is an old house 1920 s 2 story that had 2 layers of lathe and plaster on it.
As an amazon associate i make.
Window jambs extend beyond drywall.
I have a homeowner who has window and exterior door jambs that extend past the drywall by about 1 1 2 inches.
Tools used on this job.
Step 2 create the extended door jamb.
What he ended up doing is to extend the jam in order to split the difference i e at maximum the jam was 1 8 past the dw at minimum 1 8 behind.
Watch a simple way to build and install your own wood trim that also solves a common problem with drywall that extends too far past door and window jambs.
A buddy of mine does trim work for a living.
The ripped out the plaster and put in drywall and now all of the jambs protrude past the drywall.
Mark the outline of the door jamb using a pencil.
Not everything is perfect.
Determine the length of the side jambs and the horizontal jambs.
The door casing is nailed to the jamb and to the wall and covers the space between the doorjamb and the wall.
These jambs span from one side of the wall to the other.