Build Exterior Door Jamb Sill

The sill is beveled on one side to drain water away from the house.

Build exterior door jamb sill.

Here s what to do. Insert the vertical sides and top of the exterior door jamb into the door frame. It fits tightly between wall studs and under the jambs and casing so it has to be cut before it can be removed. Set them upright on each side of the door opening.

Since the door opening must be bigger than the door in. Place the two side doorjamb boards into the frame one on each side of the frame. Measure from the floor or base of the frame to. The horizontal component found just above the door with two grooves the door jambs are built to fit into.

Use the carpenter s square and level to ensure 90 degree angles as you insert small wood shims into the sides and top of the door frame. If you want your door unit. Gregg hoyer walks you through the sill options available to you when building an exterior door unit and the pros and cons of each. When building a door jamb to fit a standard wall with a two by four frame and 1 2 inch drywall on each side the width of the jamb board typically is 4 9 16 inches.

If you re not using premade jamb material or if your walls are a nonstandard thickness you can buy 5 or 6 inch wide lumber and rip cut it to the width of the wall using a table saw. Use a helper to hold them in. Measure the right side of the door frame with your tape measure. If the threshold is rotted the sill probably is too.

Trimlite 36 x 80 1 lite french right hand inswing exterior prehung entry door with oil rubbed bronze hinges 6 9 16 door jamb and mill sill model. Measure the height and width of the door using the tape measure. These hold the door jamb in place keeping the sides vertical and top perpendicular. Check and adjust the shims as needed.

Cut one stud to the width of the. Cut two studs to the height that you measured using the electric saw. Another horizontal piece that s found on the floor below the door also sometimes called the door threshold.