How to measure your windows for replacement

Replacing your windows is an exciting home improvement project that can bring new life to your home. However, the process of choosing new windows and ordering them can be challenging, especially if you are not familiar with how to measure your windows. Inaccurate measurements can lead to delays, additional costs, and frustration. Learn how to measure your windows accurately, so that you can get the most out of your investment.

Get accurate measurements 

Before you begin measuring your windows, it’s important to understand the importance of accurate measurements. Windows come in standard sizes, but the opening in your home may not be a standard size. Inaccurate measurements can lead to windows that don’t fit properly, which can cause air and water leaks, or even require you to purchase new windows altogether.

The process of measuring windows is relatively straightforward, but it requires attention to detail and the right tools. You’ll need a measuring tape, a level, and a pencil or marker.

Measuring the width 

The first step in measuring windows for replacement is to measure the width of the rough opening. The rough opening is the opening in your wall where the new window will be installed. To measure this, you’ll need to measure from the inside of one jamb to the inside of the other jamb. Take the measurement at three points – the top, middle, and bottom – and the smallest measurement should be used.

Next, measure the jamb to jamb width. To do this, measure from the inside of one jamb to the inside of the other jamb at the head height of the window.

Finally, calculate the final width measurement. Subtract 1/4 inch from both the rough opening and jamb-to-jamb measurements. This will ensure that your new window will fit snugly in the rough opening without binding.

Measuring the height

The next step in measuring windows for replacement is to measure the height of the window. To do this, measure the head height and the sill height. The head height is the distance from the top of the rough opening to the bottom of the window header. The sill height is the distance from the bottom of the rough opening to the top of the window sill.

Once you have these two measurements, calculate the final height measurement. Subtract 1/4 inch from both the head and sill height measurements.

Things to consider when measuring your windows

When measuring windows for replacement, it’s important to consider the type of mount you prefer. Windows can be mounted inside or outside of the rough opening. If you prefer an inside mount, measure the rough opening height and width. If you prefer an outside mount, measure the height and width of the wall surrounding the rough opening.

You should also consider any obstructions, such as window sills, that may affect the measurement of your windows. If you have any irregular shapes, such as arched or angled windows, you may need to seek the assistance of a professional window replacement service.

Get help from our professional window installers

Measuring your current windows is an important step in making sure that your new windows will fit properly and provide the benefits you expect. By following these steps and paying attention to detail, you can ensure that your new windows will be installed correctly and provide years of enjoyment.

If you are not comfortable measuring or installing your windows, contact a professional window supplier, such as Osborn Windows. We can provide accurate measurements, help you select the right windows & install your new windows correctly so you can enjoy years of enjoyment. Our expert team has years of experience in the industry to advise and provide recommendations. Delivery is available in and around South London, including Kent, Surrey and Sussex.

Contact our experienced and reliable traders at 020 8653 2200 or by filling out a form here. Simply let us know your exact requirements and we can help you.