Adding a lining to curtains not only enhances the look but also can extend the life of them by protecting the face fabric from sunlight.
There are a number of linings to choose from depending on the location of the window. For example blackout lining for bedrooms and thermal lining for living rooms.
Most curtain headings are suitable for lined curtains including tapes and handmade headings.
Lined curtains should be dry cleaned as the face fabric and lining can shrink at different rates if they are washed.
The following instructions are for bag lined curtains (this is where the lining is attached at the top and sides of the face fabric, with the bottom hems worked separately) with pencil pleat heading tape and a fullness ratio of 2 (double the width of the window).