In some cases this will not be possible since.
Install door frames before carpet.
Space under the door photo.
At this point the only other difference with installing a pre hung door for a room that will be carpeted is that i keep the shims and the nails close to the floor on both sides.
Actually in this instance the whole house was built out of cmu interior and exterior walls.
The carpet installers will run right up to and under the trim for a seamless look.
Diycrew hrvdiy renovision there is more than 1 way to install a pre hung door.
After the fact you can also use an undercut saws to adjust the trim height.
But that forever changed my thinking on doors before carpet.
When installing baseboard before carpet the easiest thing to do is to install it even with the bottom edge of the drywall as previously described.
The key is to determine where the top of the tile carpet or throw rug will be and then raise the door frame to leave about a 1 2 in.
So all i did was install bifolds and slabs.
Install tack strips around door frames but not across the threshold to prevent stepping on the sharp points.
If you are installing a pre hung door and only one side is carpeting then it s easiest to cut off a bit of the bottom of the door before you install it.
Keep a space equal to about two thirds the thickness of the carpet between the walls and the tack strips using a scrap piece of carpet as a guide.
The jams were steel and built into the cmu.