Door frames are designed to enclose doorways. A door frame usually include a horizontal beam called the header that runs along the door’s top. Another horizontal beam called the sill that runs along the door’s bottom. The stiles which are the parts that vertically runs along the sides; and the bead that runs around the door frame’s interior, and which is the part of the door frame that a door closes against.

The safest door frames are those which are part of the actual structure of a home as they come solid and built-in. Every home owner needs to consider their door frame when they choose their doors. Some doors that are not standard can be oversized in width and height so having the correct measurement of the door frame is essential.

There are several types of door frames to match different door types.
Steel frames provide the best security when combined with fiberglass or steel doors. These will be reasonably resistant to forced entry.
However, for wooden door frames, heavy-steel strike plates that have long screws are essential, to strongly anchor the frame. Strike plates should also be reinforced in order to seal off air space between the door and the door frame.

• Know the basics:
  A shoe is the 2x3 or 2x4 nailed to a floor, which provides a base for studs.
  The studs are the 2x4s positioned upright to support the wall.
  A plate is the 2x4 placed on top of the studs.
• Choose on where every door will be placed when installing plates, shoes, and studs for a new wall. The same basic procedure should be done when cutting a door through an already existing stud wall. Use metal lumber connector brackets for easier nailing of the door frames.
• The size of the door opening will vary based on the door size that one wants to install. A standard door opening is approximately 2’8. Carefully measure the door size and cut its opening to fit.
• After, cut and insert studs on every side of the door’s area. Have this opening as the door’s width and add 6. The 6 extra will permit for the door’s width facing on both sides.
• Measure the door’s height that is to be installed. Add 1 to the height measurement of the door and cut 2x4s in this dimension. Install the studs on whichever side of the door.
• To finish the header portion above the frame of the door, one can choose from two ways: first, is to cut two 2x4s which has a length equivalent to the original opening’s width, and insert them to create a header over the door. When they’re placed in the right position, nail the header pieces together steadily. Next, determine the distance of the header plate from the top to the ceiling plate, then cut cripple studs to the measured size. Insert three cripple studs in the space on top of the door header. Toenail them to the header and to the plate above the studs.


The second way is to cut 2x12s (two) with the original opening’s width measurement. Put one-half-inch plywood spacers between the 2x12’s, then nail them jointly. Insert them above the door frame to form a header.
• In a number of situations, an exterior door frame’s casing is nailed directly to the studs; while others nail the casing above the sheathing. The interior wallboard’s thickness, as well as the sub-sheathing, will determine how its door jamb will be installed. If needed, inserting a filler strip is needed to make a door jamb fit the installation.
• Put in a finish framing to the door after placing the drywall, paneling, or other material. Side and head casings polish off the door’s opening.

Wood is the most popular choice for construction of door and window frames. Wooden frames give architectural beauty to the building and are easy to maintain. There are many types of wood according to the quality. The type of wood is used according to the requirement of the building and availability of budget. Now a days aluminum door and window frames are mostly used in commercial and offices complex, high class buildings to give architectural view to enhance the beauty and smooth working. These frames give beautiful looks, require no painting and less maintenance cost and are free from termite attack, rusting problems etc. Iron frames in door and windows are used in low cost buildings. These frames are safe from termite attack. There are three types of iron door frames. These door frames are made from angle iron of size 40 mmX40 mmX6 mm. Iron hinges are welded with frame. The joints should be flush welded and ground smooth with grinder. The frame should be true to right angle. Priming coat should be done before fixing the frame. These frames are made from T. Iron and all other procedure is the same as for angle iron door frame. These frames are manufactured from mild steel sheet 1.25 mm thickness. Iron hinges are welded with frame. The length of vertical post should be 40 mm extra long as compared to opening for embedding in the floor. The joints should be flush welded and grinded smooth with grinder.
The back side of frame is filled with cement concrete 1:3:6 before fixing. Priming coat is done before fixing. The size of pressed steel door frame = 89 X 50 MM, 76 X 38 MM, 127 X50 MM, 114 X 50 MM available in the market

Every door needs a door frame, like a house needs a door; it is always essential to make sure that door frames exactly match the size of your door. Additionally, the material that a door frame is made of will determine its usefulness; choose door frames that do not only match your door, but give you the strong quality as well.

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Also see

• Door Buying Guide - Brands, Price, Reviews, Designs, Photos
• General Tips on Doors
• Decorative Surrounds for Doors
• Folding Doors for Dividing Space
• More articles on doors

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