A curtain liner does pretty much what its name implies — it lines a curtain. … Window curtain liners serve many purposes, including blocking out light, soundproofing, or insulating a window. Curtain liners — or drapery liners, as they are also called — are generally attached to the back of the curtain or drape.

What is curtain liner?

A curtain liner does pretty much what its name implies — it lines a curtain. … Window curtain liners serve many purposes, including blocking out light, soundproofing, or insulating a window. Curtain liners — or drapery liners, as they are also called — are generally attached to the back of the curtain or drape.

Can you use curtain liners as curtains?

Pick a plain cotton lining to add weight to thin curtains. If you aren’t concerned about blocking light or insulating a room, use a standard cotton liner. The weight of the liner can help weigh down light curtains so they hang better. The liner will also protect sheer curtains from sun damage.