When you order custom window treatments, the specifications can sometimes feel like they are written in a private dialect. The phrase "valance return" appears frequently in the documentation for pleated or cellular shades, particularly when you are trying to achieve a precise, built-in look. Essentially, it is the horizontal distance the blind or shade fabric extends horizontally behind the mounting bracket or valance clip.
This measurement is critical for ensuring that the fabric fully covers the gap between the headrail and the window frame. Without accounting for the return, you might install your blinds only to find that light bleeds in through the sides or that the mechanism is visibly exposed. Think of it as the overlap that acts as a visual and functional seal, creating a finished appearance that looks intentional rather than improvised.
The Technical Breakdown of the Return
To understand the function of the return, you must differentiate between the face of the blind and the hardware. Most modern treatments, such as roller shades or pleated blinds, attach to a headrail that is housed inside a metal or plastic enclosure. The valance return is the specific measurement of how far the fabric wraps around the sides of this headrail.
| Component | Description | Impact on Installation |
|---|---|---|
| Valance Clip | The hardware that clips into the front of the headrail to hold the decorative valance. | Determines the starting point for the fabric wrap. |
| Return Depth | The horizontal distance the fabric extends behind the headrail. | Ensures the blind blocks light and hides the mounting brackets. |
Manufacturer Specifications Vary
Not all blinds are created equal, and this variance is the primary reason you must check the specific return requirement before cutting your fabric or placing the order. One brand might require a 2-inch return on each side, while another demands 3 inches. If you fail to meet this specification, the blind may not tilt correctly, or the fabric might buckle against the brackets.
Visual and Functional Importance
From a design perspective, the return creates a clean line along the edge of the window. When the fabric pulls tight against the side jambs, it eliminates the "wing" effect where light leaks through the middle. This is especially important in rooms with heavy sunlight, such as home offices or media rooms, where glare on screens can be a constant issue.
Functionally, the return protects the delicate mechanics of the tilt mechanism. By wrapping the fabric around the sides, you create a barrier that prevents dust and debris from falling into the headrail. This not only extends the life of the blind but also maintains a smooth, uncluttered appearance that keeps the focus on the window view rather than the hardware.
Measuring for Success
Accurate measurement is the difference between a professional finish and a frustrating re-do. To calculate the total width of the fabric required, you must add the exact window width to twice the valance return. For example, if your window is 36 inches wide and the blind requires a 2-inch return, you need a total of 40 inches of fabric width to ensure full coverage and proper tension.
