The Stopper Knot is a great backup to other knots. It can be added to the end of the rope, or after another knot to increase security.
This particular knot is most commonly used at the end of the ropes when setting up to rappel, at the end of the rope on the belay side while on top rope, and at the end of any other finishing knot when building anchors. We have also seen the stopper knot being used at the end of a figure eight knot used for climbing, but a figure eight alone is strong enough without a stopper knot.
When you see a stopper knot at the end of the rope(s) it is usually referred to as “closing the system”. In the event of the rope being too short, the stopper knot will block the rope from coming out of your belay/rappel device. This particular stopper knot will not work on other devices used for canyoneering, or devices with a wider opening that are different from those used for rock climbing.
Tech Video | Stopper Knot or Double Overhand Knot
This video is for informational purposes only. It is not intended to qualify as official climbing training. You are responsible to go through the proper education and training programs necessary to obtain skills under the supervision and guidance of a professional and certified instructor.
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