« « Measuring for Window Coverings

Measuring for Window Coverings (2)

window-treatmentsFor an inside mounting, measure the window in three different places, both vertically and horizontally. Sometimes, a window frame can have small differences and you want to fit to the least width and height. Otherwise, you could end up with a blind or curtain rod that is too wide for the window opening.

Outside mountings are installed either on the window frame itself or above and hang on each side of the window frame. For outside mountings above the window, measure in three places vertically and horizontally, but add an extra 1 1/2″ to 3″ or 4″ on each

side of the window frame trim to allow for overlap. The height of the head rail or curtain rod position above the window is up to you or your client, but be sure to allow the same 1 1/2″ to 3″ or 4″ overlap at the bottom of the window frame including trim.

Some additional things to consider:

  • Inside mounts will result in the window being partly obscured by blinds/curtains when they are in the raised/open position so be sure that is acceptable to clients.
  • Vertical blinds usually require a minimum 4 1/2″ window casement or sill depth to allow for the head rail mechanism when mounting on the inside.
  • When using valances, you can install them several inches above the window casing to add height to the window’s appearance.
  • To find wood under the drywall around the window for mounting screws, mark the holes where you plan to position mounting hardware, then take a small nail and tap it through the drywall there. If you don’t find any wood you’ll need to use a drywall anchor for the mounting screws.

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