One of the most common mistakes homeowners make when ordering new doors is taking inaccurate measurements. Getting this wrong can result in wasted money, delayed installation, and frustration. We've put together this guide to help you measure your doorway properly the first time.

What You'll Need

Before you start, gather a metal tape measure (at least 5 metres), a spirit level, a notebook, and a pen. Avoid using fabric tape measures as they can stretch and give inaccurate readings.

Measuring the Width

Measure the width of the doorway in three places: at the top, middle, and bottom. This is important because not all doorways are perfectly square. Record the smallest measurement, as this is the actual usable width. Remember to measure the inside of the existing frame, not the outside.

Measuring the Height

Similarly, measure the height in three locations: on the left side, in the centre, and on the right side. Again, use the smallest measurement. Measure from the floor to the top of the frame opening.

Check for Plumb and Level

Use your spirit level to check if the sides are truly vertical and the top is truly horizontal. Older properties often have doors that aren't perfectly square, so note any angles or irregularities. This information is crucial for your installer.

Measure the Depth

The depth of your wall matters, especially for frames and hinges. Measure from the inside face of the wall to the outside face. This is particularly important in period properties with thick walls.

Document Everything

Take clear photos of your doorway from different angles. Note the direction the door currently opens, any obstacles nearby, and the type of flooring. These details help our team prepare for installation.

Double-Check Your Work

Measure everything twice. Get a second person to verify your measurements independently. The few extra minutes spent now could save you considerable expense later.

If you're unsure about any measurements, don't hesitate to contact our team. We offer free measurement surveys for customers in many areas, and it's always better to ask than to guess.