Cut the carpet to fit the bottom of each stair the area where the foot will fall.
Tack down carpet on stairs.
Working from top to bottom apply removable carpet glue with a glue gun and adhere the piece to the stair.
Roll up the removed carpet fasten it with a piece of duct tape to keep it from unrolling and dispose of it in a contractor bag.
Measure the width of the stair and length.
Grab a sharp utility knife and a measuring tape and get to work.
Prepare your stairs for carpet installation by installing tack strips thin pieces of wood resembling yardsticks with tacks pointing upward.
Cut your tack strips into lengths which are 4 inches shorter than the width of your carpet runner allocate two strips for each step of your staircase.
These will grip the carpet backing and hold it in place.
To achieve the right grip you need to.
If the carpet padding is tacked on simply pull it up and dispose.