How to Install a Door – Opening, Installation, Hardware and Finishing

How to Install a Door - Opening, Installation, Hardware and Finishing

The type of door will determine the installation process, but the majority of the tips in this article can be used. If you have all the necessary tools, installing a door can be done quickly. This procedure works for aluminum, fiberglass, and wood doors. These are great tips to help you install a door.

How to Install a Door. Prep the Rough Opening

Measurements of the opening are necessary to determine how to install a door. The opening should be 2 inches wider than the new door and 2 1/2 inches taller. This extra space will enable you to install your door frame.

  • Before you begin installing the doors, make sure that the rough opening has been leveled and that it is plumb. The floor below the door sill is the sub sill.
  • To level the sub sill, you can use a wooden shim or a beveled board.
  • To remove the required thickness from the floor surface, a spacer board should be used.
  • Apply caulk to the sub sill. One inch in front of the sill and one inch back. The caulk should be applied at least 2 inches above the rough framing.
  • Take the door assembly out of its packaging. Some doors can be secured using screws through the jambs to prevent shipping damage.
  • Shipping braces are sometimes attached to doors that need to be removed after the door is shimmed in place.

How to Install the Door

  • At least 6 brackets should be attached to the door jamb.
  • To prevent the door from settling on the floor, lift it into the opening.
  • Place the bottom of your door first, with the top facing you. Turn the door.
  • Start with the upper hinge and place a nail through it. Level the jamb. Once the jamb is level, attach nails to all hinge locations.
  • Use 16 finishing nails to fix the door into place.
  • Do not force the nails in.

Leveling and plumbing a door

  • The frame must be fixed in place using shims before you can install a door.
  • A wooden shim should be placed on the hinge side.
  • These points will see the door permanently attached to the rough opening.
  • Adjust the frame and shims until the jamb on the one side of the door is level in both directions.
  • Make sure there is a gap of 18 inches between the jamb of the door and the edge of your door.
  • Remove braces from doors that came with them if you are going to install them. To ensure proper swinging, open and close the door.
  • Make sure that the door face is in contact with the weather stripping.
  • Install a solid shim at the lock strike location.
  • Use 3″ screws to permanently secure the jambs. Continue to secure the jambs by driving nails through the shims or screws around the door.
  • To prevent distortion of the frame, screws or nails must be installed through shims.
  • Install screws through the shim at the lock strike location.

Is it necessary to insulate after a door has been installed?

After you have learned the basics of how to build a door, professionals may ask if they should insulate it. Here’s how I recommend it.

  • Use low expansion foam or fiberglass insulation to insulate around the door frame.
  • Install the interior trim. Caulk the joints between the trim & brick mold, where brick mold meets the external wall.

As directed by the door manufacturer, install the weatherstrip at the base.

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