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How to measure up for folding sliding doors yourself for accurate online quotes

Installing new folding or sliding doors in your home can transform the space and help you to connect the interior and exterior of your property. When fully opened on a warm summer’s day, your new doors will dramatically improve your living space, seamlessly link your home with your garden and give your family a stylish area they can really enjoy.

However, before you can earn the many benefits of sliding or folding doors, you need to get them installed. The first step in the process is measuring your existing door cavity so that you know exactly how big your new doors need to be. To help you find a door that’s the perfect fit for your property, we’re looking at how you can measure up for sliding or folding doors at home.

Finding the right doors for your property

Firstly, you need to decide exactly what type of doors you want for your home. As @LucySearle says on, “Choosing the right bi-fold or sliding doors for your house is important, both practically and stylistically, and they could quite easily become the wow-factor design feature that you have been looking for.”

Take the time to browse through some online galleries and compare the various options out there. If you’re still unsure what style of door is right for you, talk to a local supplier for a little expert advice.


If you’re going to get accurate measurements for your new sliding doors, you need to ensure you have good quality tools at your disposal. Invest in a tape measure long enough cover your entire door opening in one go.

You’ll also need a spirit level to make sure that the tape measure is straight and your readings accurate. In addition, you might also need to ask a friend or family member to help you precisely measure the space.


Firstly measure the cross corners of your door aperture. Measuring the distance from the bottom left-hand corner to the top right-hand corner and comparing it with the measurement from the bottom right to the top left will help you to check that space you have for your new door is straight and true.

Next, measure the width of the aperture and take readings of the height of the doorway at each end and in the middle. The height should be the same all the way along. If not, you may have to do some remedial work before your new sliding doors are fitted.

Once you’ve got your folding or sliding door measurements, you can compare them to the standard sizes that your chosen manufacturer offers. Standard doors will generally be the more affordable option. However, if your aperture is not a standard size, you’ll need to opt for a bespoke design.

If you want some expert advice on measuring for your new doors, or if you want to take a look at the various options available, we can help. Get in touch with a member of our team today to find out more.