But 20 years ago i experimented with drywall returns on the windows and doors in my own house.
Drywall door jamb.
Place the door inside the jamb unit.
Just position the blade of the drywall saw along the inner edge of the door frame and turn it on.
Kerfed flat jambs are slotted on the edge for wrapping the drywall corner bead rounded or even square drywall corners into the jamb.
The reason it s so easy is that it eliminates most of the prep measuring work necesary on the opening unless the dw hangers are real sloppy.
One detail i ve noticed is that drywall returns on windows are far more common than wood extension jambs and casing.
Casing dw corner margins are a snap tweaking jambs for a flush door jamb are easier too since the margin is estabilshed when you nail the casing to the wall first.
This means the trim casing is no longer necessary.
There s no need to measure or use a guide.
We typically use this sharp l corner for all of our.
Center the door in the jamb and place blocks under the door so that the face of the door is flush with the top edge of the jamb.
Depending on the style of the home this corner can either be bullnose rounded or a sharp or l corner.
These jambs are typically 1 more narrow than regular flat jambs to allow for wrapping the drywall corner bead into the jamb.
Step through the open wall studs to the other side of the wall and use a drywall saw to cut out the piece of sheetrock that is covering the top of the door opening.
With this wrapping the drywall connects directly to the door frame and gap between the door frame and drywall goes away.
Wood stud anchors are made with two steel tabs that fold over the face of the stud and fasten to the stud.
Universal stud anchors are a combination of both types of stud anchors making it usable at either type of stud wall.
In the northeast you don t often see drywall returns except on commercial and multifamily housing.