Drywall Wider Than Door Jamb

It s a common practice to add another 1 8 inch for some leeway to ensure the jamb covers adequately making the average door jamb 4 5 8 inches wide.

Drywall wider than door jamb.

The door jamb is the frame that installs in the wall and supports the door via hinges. The door casing is nailed to the jamb and to the wall and covers the space between the doorjamb and the wall. Doorjambs are designed to fit standard width walls made out of 2 by 4 or 2 by 6 lumber plus a layer of 1 2 inch drywall on each side of the wall. 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.

But 20 years ago i experimented with drywall returns on the windows and doors in my own house. In the northeast you don t often see drywall returns except on commercial and multifamily housing. Even without measuring you can do the math. This thickness is designed for installation in a standard two by four wall constructed by studs that are.

Unfortunately after handing the drywall i noticed the door jamb and window case extends a extra 1 4 out from the wall. One detail i ve noticed is that drywall returns on windows are far more common than wood extension jambs and casing. The door jamb is standard 4 11 16 wide which leaves an extra 7 16 or nearly 1 2 an inch to play with. I have a wall that is measured at 4 1 4 thick standard 2x4 with 3 8 drywall on both sides.

Framing for a non load bearing door header to properly fit an interior door in your home the door jamb must match the thickness of the finished wall or be slightly deeper than the wall. Most framing studs are 3 1 2 inches in wide with 1 2 inch thick drywall on both sides for a total thickness of 4 1 2 inches.