FINISHED CURTAIN WIDTH
For a pair of curtains the Finished Curtain Width for each curtain is half the pole length plus a figure for ease and overlap*.
We use the following for ease and overlap per curtain on a pair of curtains.
|Pole Length ||Ease + Overlap per curtain|
*Note if you are returning your curtain to the wall (continuing the outside flap of the curtain from the pole to the wall) you will also need to add the distance of the curtain pole to the wall to the finished curtain width.
Curtain NOT returning to the wall
*Curtain returning to the wall
FINISHED CURTAIN LENGTH
To calculate the Finished Curtain Length add the Hook to Top and Hook Drop measurements together:
The calculation for the finished curtain length is then.
CHOOSE YOUR PLEAT DEPTH
The Pleat Depth
of the goblet pleats you wish to make will determine the size of the buckram needed and have a small affect on the amount of fabric and lining you require (as calculated in step 3 and step 4). The depth of your pleat is the depth of your buckram.
This is a design decision limited only by the sizes of buckram you have available to you. Note you can cut buckram down if needed.
For guidance generally we would make sill length curtains with a 10cm (4") buckram and floor length curtains with a 12.5cm (5") or sometimes 15cm (6") buckram.
PLEAT SIZES & SPACING
THE NORMAL PROCESS
When making a pair of hand pleated curtains we NORMALLY calculate the pleat and gap sizes in STEP 9. This is the process we follow.
- Decide now how full you want your curtains to be. (see below)
- Calculate to the nearest half width how many widths/half widths of fabric each curtain needs to be made with in STEP 3.
- Make up the flat curtain panel (with the approriate number of widths/half widths wide) ready to be pleated in STEP 9.
- At STEP 9 measure the exact width of the made up curtain panel and THEN calculate the pleat sizes and spacing.
HOW TO CHOOSE THE FULLNESS OF YOUR CURTAINS
When deciding how full we want our curtains to be we talk in terms of Fullness Ratio. Fullness Ratio is the ratio of the width of the curtain before pleating to its finished width when pleated or gathered.
The higher the fullness ratio the more gathered and heavier the curtains will be.
We have used a Fullness Ratio of 1.9 to form the goblet pleats in the tutorial videos. The larger the fullness ratio you use the bigger the goblet pleats will be. For an interlined curtain we would use a fullness ratio of up to 2.5 to form larger more opulent pleats.