Is it true that a typical drapery panel consists of three layers?

A typical drapery panel is indeed composed of three layers, which typically include the face fabric, interlining, and a backing or lining fabric. The face fabric is the outermost layer that is visible and contributes to the aesthetic appeal of the drapery. The interlining, situated between the face fabric and the lining, adds body, insulation, and can help in achieving a more luxurious look by providing additional weight and structure to the drapery. The backing or lining serves multiple purposes; it helps protect the face fabric from fading when exposed to sunlight, enhances the drapery's opacity, and can also improve its overall thermal efficiency. This three-layer construction allows for more versatility in design, functionality, and durability, making it a common practice in high-quality drapery design.