How do I measure a Doorway to ensure that a Classic Door will fit?

How do I measure a Doorway to ensure that a Classic Door will fit

When it comes to installing classic doors, one of the first steps is obtaining the standard door size for your doorway. Accurate measurements are crucial to ensure a proper fit. Whether you’re dealing with standard sizes or unique dimensions, understanding how to measure your doorway effectively will save you time, effort, and potential headaches.

Before diving into the measuring process, it’s essential to clear the wall space around your doorway, especially if you’re dealing with double doors or need to consider wheelchair access. Having ample space to manoeuvre while taking measurements is essential.

To start, gather your tools: a reliable tape measure, a pencil for marking, and a notepad to record your findings. With these in hand, you’re ready to begin measuring your doorway.

Step-by-Step Guide: Measuring the Width of the Doorway

Begin your measurements by determining the width of the doorway. For internal doors, this is typically a straightforward process. Measure from the inside of the door frame on one side to the inside of the frame on the opposite side. Be sure to measure at multiple points along the width, including the doorway’s top, middle, and bottom. This step is crucial because door frames can sometimes be slightly uneven.

Record all these measurements, but remember that your door’s width requirement will be based on the narrowest measurement you obtain. This ensures your classic door will fit comfortably within the doorway.

Step-by-Step Guide: Measuring the Height of the Doorway

Next, measure the height of the doorway, which is especially important for external doors. Start at the top of the door frame’s inside edge and extend the tape measure vertically to the floor. Make sure the tape measure is held straight and not slanting.

Repeat this process for both the left and right sides of the doorway, as floors may not always be perfectly level. This step may be less critical for internal door sizes, but it’s a good practice for accuracy.

When recording your measurements, prioritise the shortest measurement you’ve obtained for your door’s height. This ensures that the door will comfortably fit within the doorway’s height.

Checking for Any Doorway Obstacles or Irregularities

While measuring, check for any obstacles or irregularities affecting the door’s installation. These obstacles could include immovable objects, obstructions, or features like radiators or light switches that require clearance considerations.

Determining the Door Swing: Inward or Outward

Consider whether you want your classic door to swing inward or outward. Measure the barn door track space on either side of the doorway to ensure there’s enough clearance for the door to swing comfortably in your desired direction. This is especially relevant for bypass doors or pocket door frames.

Measuring the Door Frame for Frame-Fit Doors

For frame-fit doors, you’ll need to measure the frame’s size, including both the width and height. Ensure you measure the width from the inside of the frame, aligning with the earlier measurements you took for the doorway itself.

Considerations for Double Doors and French Doors

If you plan to install double or French doors, measuring the total width required for both doors when fully open is crucial. This ensures that the doors won’t obstruct each other’s path when in use.

Recording Your Doorway Measurements: Accuracy Matters

Precision is key when recording your measurements. Clearly mark all measurements you’ve taken, indicating whether they are related to width or height. Include notations for any irregularities or special considerations, such as non-standard size requirements.

It’s also important to note that different regions might use metric door sizes or imperial measurements. Common Mistakes to Avoid When Measuring a Doorway

While measuring a doorway, there are common mistakes to avoid. One of the most critical factors is forgetting to account for the tolerance for fitting. Each door type, whether for period properties or modern homes, may have specific recommendations regarding the tolerance allowed for fitting. Researching these guidelines and adhering to them for a successful installation is essential.

Consulting a Professional for Precise Measurements

It’s advisable to consult with a professional for complex projects or unique situations. Professionals can provide precise measurements and offer guidance on choosing the right door size and style for your needs, whether you’re dealing with bi-fold doors, pocket door frames, or any other type of door.

Interpreting Your Measurements: Choosing the Right Classic Door

Now that you have accurate measurements, it’s time to choose the perfect classic door for your space. Consider factors like the door’s style, material, and design to ensure it complements your home’s decor and suits your personal preferences. For instance, you might opt for solid wood doors for their timeless charm or explore a wide range of contemporary styles for a more modern look.

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Custom Door Solutions: Tailoring Doors to Your Measurements

If you have unique requirements or prefer a bespoke option, some providers offer custom doors tailored to your measurements and specifications. This provides a perfect solution for those seeking a one-of-a-kind door that fits precisely within their doorway’s dimensions.

Quality Craftsmanship and Installation: Ensuring a Perfect Fit

Investing in quality craftsmanship and professional installation services is paramount. The combination of a well-made classic door and correct installation guarantees a perfect fit and long-lasting performance, whether you’re installing doors for external doors, internal door height, or any other purpose.


What are the standard door sizes for residential homes?

Standard door sizes for residential homes vary depending on the region and local building practices. However, standard internal door sizes typically range from 24 to 36 inches (61 to 91 cm) in width and 80 inches (203 cm) in height. External doors may have different standard sizes, usually wider and taller, to accommodate entryways.

How do I convert between metric door sizes and imperial measurements?

A2: You can use online conversion tools or charts to convert between metric door sizes and imperial measurements. For example, in imperial measurements, a standard metric door size of 80 cm in width is approximately equivalent to 2 feet and 7.5 inches. Be sure to round to the nearest fraction of an inch for accuracy.

Are there any building regulations I need to consider when measuring my doorway?

Building regulations regarding doorway measurements may vary by location and intended use. It’s advisable to consult local building codes or a professional to ensure compliance with regulations related to doorway size, especially for external doors and accessibility requirements.

Can I install classic doors in older period properties with non-standard sizes?

Yes, classic doors can often be customised to fit non-standard sizes, making them suitable for older-period properties with unique dimensions. Many manufacturers offer bespoke door solutions tailored to your measurements and requirements.

What is the ideal tolerance for fitting when installing a classic door?

A5: The ideal tolerance for fitting when installing a classic door can vary based on the type of door and the manufacturer’s recommendations. Generally, a small gap of around 1/8 to 1/4 inch (3 to 6 mm) around the door frame allows for smooth operation and accommodates minor irregularities in the doorway.

Final Thoughts

Accurate measurements are the cornerstone of achieving classic door elegance in your home. Taking time, using the right tools, and consulting with professionals when needed will ensure that your classic doors fit your living space perfectly. With precise measurements, you’re well on your way to adding a touch of classic charm and functionality to your home. And for the finest classic door options and installation services, Nes Doors is your trusted partner.

Nes Doors: Your Partner in Crafting Custom Classic Doors

At Nes Doors, we understand the importance of a perfectly fitting classic door. Our expert team is dedicated to helping you choose and install the ideal classic door that matches your measurements and complements your home’s style. We believe in the principle of “Why do it yourself when we can do it for you?” That’s right, at Nes Doors, we go the extra mile by coming down to your home to take precise measurements. This ensures that your classic door will look stunning and fit seamlessly, enhancing its aesthetic appeal and functionality.

With a wide range of classic door options, custom solutions, and a commitment to quality craftsmanship, we provide peace of mind for homeowners seeking timeless elegance. Contact Nes Doors today to begin your journey to classic door excellence and experience the convenience of our measurement service, where we handle the technical details so you can focus on enjoying the beauty and security our classic doors bring to your home.

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Daniel Lichtenstein is the founder and CEO of NES Security, a leading provider of security solutions in the United Kingdom.