Mysest56 
May 7, 2019
Replacement, especially for pre-hung window cleaning, happens to be one of the most common fixes that homeowners are using at the moment.
The following steps should guide you through the installation:
Step 1
When placing an order, be keen on the options. You can either get a left-hand swing or a right-hand swing. Alternatively, you might request the manufacturer to drill the holes that will be used for the locksets in the door for you. In case your door comes with a brace that keeps the frame and door in line, do not remove the brace until you have shimmed and plumbed the door into position.
Step 2
While preparing the frame for the door installation, trim away excess drywall. This is to ensure that the new door you are installing will hang properly.
Step 3
You should make sure that the floor over which the door will be swinging is leveled. Where necessary, mark any shims that you might need at that level.
Step 4
Where will you install the shims? You must have this position figured out. Use a marker to indicate the positions against the jamb, especially if you will need shims for your door.
Step 5
Now that you are almost ready, cut the door to the right size. In case you are unsure about the measurements, take them again. You do not want to end up having to make last-minute changes.
Step 6
The door will be delivered in protective temporary packaging. Remove the packaging. Also, remove the plug which comes with pre-hung window installation and the temporary trim you will find at the lower end of your door.
Step 7
Carefully install the door into position. Make sure you have the shim attached to the doorway correctly. Use one nail on the shim to get you started.
Step 8
Set the position of the door within the opening. Before you fix it into position, give it a light swing back and forth to make sure that the door is easy to operate. After that, get your nails and secure the jamb. This should be done along the length of the door.
With a straight edge, confirm whether the door can open and close properly. Close the door and insert a shim near the lower hinge to cover for any necessary adjustments.
Step 9
Check the door level once again. Inspect the gap above the window repair. It should not be too big nor too small, but it should allow the door to operate without a problem. When that is done, fix the door into position. Nail the door through the shims from the jambs.
For a smooth finish, get a nail set to set the nails right under the wood. Any resulting holes should be filled with spackle.
Step 10
When you are done, open and close the door a number of times to make sure it’s working properly. In case there is need to make adjustments on the door, you should gently tap at the desired spot with a sledgehammer.