To measure for replacement bifold doors, you need to accurately measure the width and height of the existing door opening.
Measuring Your Bifold Door Opening
Accurate measurements are crucial for selecting the correct replacement bifold doors. Follow these steps to ensure you get the right size.
1. Measure the Width
Measure the width of the door opening from jamb to jamb in three different places:
- At the top
- In the middle
- At the bottom
Record all three measurements. The smallest of these measurements is typically the width you will use to determine the required door size.
2. Measure the Height
Measure the height of the door opening from the finished floor (or threshold) to the top of the frame in three different places:
- On the left side
- In the middle
- On the right side
Record all three measurements. The smallest of these measurements is typically the height you will use to determine the required door size.
Why Measure Multiple Points?
Measuring at multiple points accounts for any inconsistencies or variations in the opening's dimensions. Walls and frames are not always perfectly square or plumb. Using the smallest measurement ensures that the new bifold doors will fit within the narrowest or shortest point of the opening.
Accounting for Door Size
Once you have accurately recorded the smallest width and height measurements for your opening, you are ready to look for replacement bi-fold doors. It's important to note that the actual size of the bifold door unit you purchase will be slightly smaller than your measured opening dimensions. This is done intentionally by manufacturers or installers to allow room for hardware and an even gap around the doors, as highlighted in resources like video guides on measuring interior bifold doors. These gaps are necessary for the doors to operate smoothly and fold correctly.
Manufacturers provide door units sized to fit standard opening dimensions, factoring in the necessary clearances. When purchasing, you typically select the door unit that matches your measured opening size, and the door unit itself will be factory-sized slightly smaller to accommodate hardware and clearances.
Summary of Measurements
| Measurement Type | Locations to Measure | Measurement to Use |
|---|---|---|
| Width | Top, Middle, Bottom | Smallest |
| Height | Left, Middle, Right | Smallest |
Always double-check your measurements before ordering. If the opening is significantly out of square, you may need to consult a professional.
