# How to measure a door for replacement?

### Measuring the height and width of the door

When it comes to measuring a door for replacement, the first and most crucial step is to measure its height and width accurately. Here’s how to do it:

1. Using a tape measure, measure the height of the door from the bottom edge to the top edge in three different places: the left side, the center, and the right side. Take note of the highest measurement.
2. Next, measure the width of the door from one side to the other side. Again, take three measurements – one at the top, one at the middle, and one at the bottom. Record the widest measurement.
3. Ensure that you measure the door slab itself and not the frame or any other parts.

### Measuring the door jamb and frame

In addition to measuring the height and width of the door slab, it’s also important to measure the door jamb and frame. This will help you ensure that the new door will fit properly into the existing space. Here are the steps to follow:

1. Measure the width of the door jamb by measuring from the inside edge of one jamb to the inside edge of the opposite jamb. Note down the measurement.
2. Measure the height of the door jamb by measuring from the top of the jamb to the bottom of the jamb on both sides. Take note of the shortest measurement.
3. Don’t forget to measure the depth of the door jamb as well. Measure from the front face of the jamb to the back face. This will determine the thickness of the new door.

### Considering the swing and handing of the door

When replacing a door, it’s essential to consider the swing and handing of the door. The swing refers to the direction in which the door opens, while the handing refers to which side the hinges are located. Here’s how to determine the swing and handing:

1. Stand facing the side of the door where you can see the hinges.
2. If the hinges are on the right side, it’s a right-hand swing door. If the hinges are on the left side, it’s a left-hand swing door.
3. To determine the handing, stand on the side where the door opens towards you (the side you approach when you want to enter the room).
4. If the doorknob is on your right, it’s a right-hand door. If the doorknob is on your left, it’s a left-hand door.

### Taking note of any special features

Before purchasing a replacement door, it’s important to take note of any special features or requirements that your existing door may have. This includes:

• Glass inserts: If your door has glass inserts or windows, take note of their dimensions and shape. This will help ensure that the replacement door has the same or similar features.
• Hardware: If you plan on using the existing hardware, such as locks, handles, or hinges, measure them to ensure they will fit the new door properly.
• Thresholds and sweeps: If the existing door has thresholds or sweeps, measure their length and width as well. This will help ensure a proper fit and prevent any gaps or drafts.

### Seeking professional assistance if needed

If you’re unsure about how to measure a door for replacement or if you have a custom-sized door that requires precise measurements, it’s always a good idea to seek professional assistance. A professional contractor or door supplier can guide you through the process and help ensure that you get the right-sized door for your needs.