Roll the rug in the opposite direction and leave it rolled for several hours or overnight
Place the rug flat on a clean floor and weigh down the curled edges with heavy books or furniture
Use rug tape or double-sided carpet tape to secure the corners and edges
Apply gentle heat with a hair dryer on low while flattening the curled areas by hand
Lay the rug in direct sunlight for a short time if the material allows it
Dampen the back lightly with a spray bottle and press it flat
Place a non-slip rug pad underneath to help it stay flat
Steam the rug lightly if the fiber type is safe for steaming
Reverse-roll the corners individually if only the edges are curling
Keep the rug in a flat position for several days until it settles