Installing A Pre-hung Wood Door! Search Amazon.com for prehung interior wood doors

Ladies, this is not as hard as it sounds.  Just follow along, step-by-step.

When preparing to buy a pre-hung door, make sure you first measure the height and width of space where the door will be (the rough opening).  This is called sizing.  You never want incorrect sizing, if it is incorrect, the door will not fit into the opening.  The opening should be two (2) inches wider and higher than the pre-hung door.  When the door is installed correctly, there will be one (1) inch left on the sides, the top and the bottom.  This will allow the pre-hung door to be leveled and squared or plumbed so the door will swing freely. 

(If you have never bought a pre-hung door before and you are not comfortable with picking out the door, etc., get help from one of the store clerks and give him the measurements you took. 

A pre-hung unit should include, the door, jamb, pre-mitered trim pieces, attached hinges and holes for the lock  and bolt. 

Before doing anything, inspect your entire unit for any damages. 

Position the door unit into the opening, making sure that it is level and square (plumb) in the opening. 

To level the door unit, insert wood shims between the door jamb and the frame on the side of the door.  Lightly tap the shims with your hammer until it is level. 

The gaps between the door jamb and the frame should be filled with shims.

Nail the jamb to the frame by nailing (6d) finishing nails through the shims.  This will secure the door and prevent flexing of the pre-hung doorframe when it is opened and closed.

Using your hand saw, cut the shims off so that they are not sticking out.  You do not want to damage the door jamb or the wall; therefore, you should hold the saw vertically

Using the (4d) finishing nails, nail the pre-mitered trim, that came with the door unit, to the jamb.  This should be done in 16-inch intervals.