How do you install a pre-hung door to a metal frame?

Answer 1

When adding to an existing building where metal studs are being used it is best to cut-out close to a corner or vertical support. From those points a floor support joint as well as additional support can be constructed as needed.

Answer 2

A prehung interior door is one of the easiest types of doors to install. It consists of a door that is already hinged to door jambs and can thus be attached to the rough door frame with very little fuss. The following are the basic steps to installing a prehung interior door.

Measure the rough opening

The rough opening is the opening into which the door will fit. It is usually simple 2X4 framing covered with drywall. Nearly all rough openings in new houses are standard sizes so you should have no problem finding a prehung door made for the size. If the size is for some reason irregular, you can have a prehung door custom made to fit. Measure, of course, both the width and height of the rough opening and write them down.

Buy a prehung interior door that fits the size you’ve measured.

Inexpensive prehung interior doors can be found at all kinds of home centers such as Home Depot and Lowe’s. Simply give sales people the rough opening (R.O.) measurements you’ve taken and they will show you the right door in various style lines and price ranges or order them for you.

Place the door in the opening.

Once you’ve bought the door, place it in the framed opening and begin to check it for plumb, level and general fit using a carpenter’s level. Add shims and make minor changes to adjust the door into the proper alignment.

Do preliminary nailing

Use 6D finish nails to partially nail the door into place. Do not drive the nails home. Send them partway through the jams and shims on the hinge side to stabilize the door, and leave a good inch or two of the nail sticking out.

Continue checking the door fit

Now you want to check the latch side jamb, the head jamb, and the fit of the whole prehung door assemblage with the door open and closed. You can use a framing square to check the corners. Make shim or jam adjustments as necessary.

Nail the prehung interior door in place

When you are sure the prehung door is plumb, level, and closes well (with the same very small gap all around) nail the rest of it in place. Now you can drive the nails home.

Install the door casing and molding and paint or stain

Install door casing and molding and paint or stain the door if desired. Many times prehung doors are fine just left as is.

That’s really all there is to it. Enjoy your new interior door!

Answer 3

When you frame your opening leave enough room to wrap it with a 2 x 4 so you have something to nail your casing to.