When it comes to the curtain fullness, there are two main aspects you need to take into account, the look and the stack width.
The look is the first and foremost factor. We have prepared the following photos to show how curtains fullness can affect the look.
From left to right, 120% to 60% fullness
Grommet / Rod pocket
1.5 times of fabric ( Minimum fullness )
2 times of fabric (Standard, recommended)
2.5 times of fabric (recommended by interior designers)
Stack width (from the least to the most)
For the stack width, we have created a calculator. The calculation is meant for estimation only, curtain fabric and hardware will affect the stack width as well.
If thermal blocking or light blocking is a concern, we recommend adding more fullness to the general rule and create a more rippled finish.