First gather the necessary supplies. A ladder, screwdriver and pliers may be needed depending on the type of roller blind installed. You will also need a new piece of cord as the portion used in the roller blind will likely be too short to rethread.
Roller blinds are popular window treatments that can be easily adapted to suit a variety of window styles. The cords on roller blinds can become tangled and need to be re-threaded to allow them to operate properly. Here's how to re-thread your roller blind cord quickly and easily: