Can I Replace the Fiberglass Doors But Keep The Existing Door Frame?

Is it time to replace your existing front door? Fiberglass doors are one of the best door materials as they are durable and energy efficient. But you might be wondering if you also have to replace your existing door frame as well. Or is it okay to just replace the door itself?

In this article, we discuss why it is best to replace the door frames in question as well as the fiberglass doors. Use this information to make an informed decision when it comes time to replace the entry doors in your home.

What Exactly Is The Door Frame?

The door frame of exterior fiberglass doors, or any doors, is basically the structure used to support the door. It consists of the following components:

  1. Door Jamb: The door jamb is the part of the door frame that is used to hold the door and the frame upright. The door jamb is on both sides of the fiberglass doors.
  2. Door Frame Sill: The door sill is situated at the bottom of the fiberglass entry doors. It is necessary as it prevents dirt, dust, water, and other elements from entering your home.
  3. Door Frame Head: The head of the door frame is the top. It is usually composed of metal and is often outlined with matching trim.

Can Fiberglass Doors Be Replaced Without Also Replacing The Door Frame?

In some instances, the fiberglass entry doors are replaceable without replacing the existing door frame. However, for this to be the case, the door frame must not display any wear and tear signs. For example, if the exterior door is no longer functioning as it should or there are noticeable gaps around the door, it is likely that the door frame needs replacement as well.

In order to replace the door only, but not the frame, the contractor (or you) need to chisel out cutouts for door hinges for the replacement door. These must be in direct proportion with the original door hinges. This also applies to holes in which the door handle and deadbolt will be installed. This ensures that the new fiberglass entry door hangs the same direction as the original door in the existing door frame. For pre-hung exterior doors, you must order a door that fits the existing opening for both the door frame and the door.

There are some instances in which repairs can be made to the existing door frame. However, in some cases, the damage is too extreme. Keep in mind that damaged door frames can lead to safety issues, increased energy costs, and issues such as water or air leakage and even flooding.

How Do You Know If the Door Frame Needs To Be Replaced?

Following are some indicators that the door frame needs replacement:

  1. Noticeable deep scratches
  2. Warping and Rotting
  3. Dents
  4. The door is not shutting or opening properly
  5. The door is not locking
  6. Noticeable gaps between the door frame and the door

Benefits of Replacing Door Frames

Here are some of the benefits of replacing the door frame as well as the door itself:

  1. The door fits the frame more securely, increasing your home’s safety.
  2. All the materials are new and therefore will last longer.
  3. The door and door frame are designed to fit one another. This saves time in drilling to make the new door fit into the existing door frame.
  4. There is less chance of air and water leakage.
  5. Replacing the door frame is more energy-efficient for your home.
  6. The manufacturer’s warranty covers both the door itself and the door frame. 

Benefits of Fiberglass Doors

  1. Fiberglass doors are extremely energy efficient. They are designed with superior insulation to protect your home from the elements. Choose Energy Star-certified fiberglass doors to help lower energy costs.
  2. Fiberglass entry doors do not warp, rot, or rust as easily as other door materials and last for many years. They require very little maintenance.
  3. Fiberglass exterior doors are extremely durable and sturdy. If safety is a top concern, these doors provide your home with an extra layer of safety.
  4. Fiberglass doors come in a variety of styles and finishes to add to the aesthetic design of your home.