Standard Lining: Made of plain cotton or polycotton standard lining will let light into a room whilst giving weight to the curtains to make them sit nicely.
Thermal Lining: Thermal lining has a tighter weave or a coating compared to standard lining which can keep a room warmer in winter or cooler in summer when closed. It will block some light compared to standard lining but will not darken the room. These are a great option for public rooms than need help with temperature control.
Blockout Lining:Blockout lining is similar to thermal lining. It is a midway between standard and thermal lining. It provides some thermal qualities and will slightly darken a room. These are also known to help reduce noise so can be a good option for those who live by a busy walkway or road.
Blackout Lining: Blackout lining will block all light coming through the fabric. As it has a tighter weave than thermal lining and blockout it will also do the same as these lining options. Blackout curtains are the perfect choice for bedrooms.