Window Treatments
Interlining
Interlining is an additional fabric layer sewn between the face fabric and lining of curtains, adding body, improving drape, and enhancing insulation. This extra layer, traditionally made from bump (thick cotton flannel) or domette (thinner cotton), is the secret behind the luxurious fullness of professionally made drapes.
The weight and structure that interlining provides helps curtains hang beautifully, with smooth, graceful folds rather than limp draping. Beyond aesthetics, interlining significantly improves thermal and acoustic performance, making it worthwhile investment for formal draperies.
Key Characteristics
- ✓Added between face and lining
- ✓Improves drape and fullness
- ✓Enhances insulation
- ✓Reduces sound transmission
- ✓Adds luxurious weight
- ✓Professional workroom technique
Types & Variations
Bump interlining (thick, heavy)
Domette interlining (lighter)
Thermal interlining (insulating)
Blackout interlining (light blocking)
Synthetic interlining (washable)
Works Well With These Styles
Placement & Usage Tips
Interlining adds significant weight—ensure rods and hardware can support finished curtains. Allow extra fullness as interlining makes fabric hang straighter with less gathering.
💡 Pro Tip
For the ultimate luxury drapes, specify bump interlining with blackout lining—this creates substantial, hotel-quality curtains that block light, insulate, and drape magnificently.