For fitting inside the window reveal
1. Measure the length from the top of the reveal to the sill in several places as your window may not be square, and choose the length that best suits. This is the finished length of your shade.
2. Measure the width of the reveal at its narrowest point. Subtract 0.4" from the reveal width; allowing for a 5mm clearance to each side. This gives your finished width.
3. Choose a mechanism and to which side this will hang. Tip: Ensure that the shade is far enough away from the window handles to prevent obstruction. You may need to fix the shade to the ceiling of the reveal.
Note: Complete blackout will not be achieved.
For fitting outside the window reveal
1. Decide on your preferred roman shade position. The top of the shade usually looks best at 3.9 inches above the reveal. For the hem position, shades usually fall 1.9-5.9" below the sill (or to the sill if the sill projects).
Measure the length between the top of the shade and the hem position. This is the finished length (measure in several places to find the length that best suits).
2. Measure the reveal width. Now decide how much the shade is to overhang beyond the reveal and add this to your reveal width (usually at least 1.9" to each side, check for obstructions). This gives your finished width.
3. Choose a mechanism and to which side this will hang.
Note: Complete blackout will not be achieved.
