Shades Measuring

Shades Measuring Instruction

Before you focus on how to measure windows for blinds or shades, you must decide which type of mounting is right for you.

Inside Mount Your Window Treatments When:


  • Enough window depth for inside mount.
  • To get a sleek and minimalist aesthetic for your space.
  • The window trim is visually appealing and should be highlighted rather than concealed.
  • You prefer window treatments that blend seamlessly with the wall without protruding.
  • The windows have sturdy frames capable of supporting the mounting hardware.
  • The house is relatively new, with well-shaped rectangular windows.
  • The window sill extends outward, complicating the use of an outside mount.

Measure the Window for Inside Mount

  • Depth: Measure inside casing depth at the top for inside or flush mount suitability. Depth needs vary by shade.
  • Width: Measure top, middle, and bottom; round down to the nearest 1/8 inch.
  • Length: Measure left, center, and right; round up to the nearest 1/8 inch, using the largest measurement.

 

Outside Mount Your Window Treatments When:

  • The window depth is not enough, also is irregularly shaped, unsuitable for an inside mount.
  • The objective is to cover unattractive window trim and refresh the window’s appearance.
  • Maximum light-blocking capability is required when the shades are drawn.
  • The window frame is too fragile or shallow to support an inside mount.
  • Privacy is a primary concern, and the shades need to block external view when closed.
  • The goal is to create the impression of taller, larger windows.
  • When rolled up, the window treatment should be as unobtrusive as possible.

Measure the Window for Outside Mount

  • Check Space: Measure the height above the window to ensure enough room for secure headrail and bracket installation.
  • Width: Measure the window's outer frame width. Add 2-4 inches total to reduce light gaps if space allows—this is your ordering width.
  • Length: Measure the window's outer frame height. Mount 10-12 inches above the frame, if possible, to account for stack height and maximize exposure.