Measure Windows With Confidence

Successful window treatments start with the right installation method. Use these notes to measure your windows for the look you want.

How to measure an inside mount

Inside mount:

  • Clean look; lets architecture show
  • Install inside the window casing.
  • Use for shades, blinds or sill-length curtains.
  • Measure width and length inside the window frame, to the top of the sill.


How to measure an outside mount

Outside mount:

  • Soft; romantic; covers wimpy architecture
  • Install outside of window casing at desired height and width.
  • Use for shirred, tab-top, pleated or grommet curtains.
  • Measure height from where rod will be installed to where the covering will end (add four inches beyond molding to avoid gaps in coverage).


How to measure a ceiling mount

Ceiling mount:

  • Elegant; dramatic; makes windows look larger and ceiling higher
  • Install rod on wall just below ceiling.
  • Use for curtain and drapery window treatments.
  • Measure height from where rod will be installed to floor. For more drama, add six inches to the length for the fabric to puddle.


How to measure a flush mount

Flush mount:

  • Tidy, polished appearance
  • Install inside of window casing and flush with window frame.
  • Use for blinds and shades.
  • Measure like an inside mount, but add the depth of the inside of your window casing to ensure that it’s deep enough for mounting brackets and head rail.