Adding a window box to the front of a home increases curb appeal and creates a cottage home look after flowers are planted. Hang the boxes under windows by attaching them directly to the wall of the home. Wooden window boxes are sturdier and have a longer life span than plastic ones. Use a plastic liner to increase the lifespan and prevent water damage. Purchase bolts to hang window boxes at stores that carry hardware supplies.
Prepare the window box by drilling 1/2-inch diameter holes into the top corners of each box, 1 inch from the top and side of the box. Add a center hole for more support if the box is longer than 30 inches.
Mark the hole location on the house by holding the box in the desired mounting position and placing pencil marks at the location of each hole.
Install a hanger bolts at the location of each pencil mark. Drill a 1/2-inch diameter hole into the house and screw the hanger bolt in so there is approximately 1 1/2 inches sticking out.
Slide the window box onto the hanger bolts so the bolt extends to the inside of the box through the drilled holes. Secure the box to the house by placing a washer onto the hanger and screwing a nut tightly in place. The wall of the window box is sandwiched between the house and a bolt nut.