More details about the Care and Cleaning of Rope
Safety: The life of a climbing rope depends greatly on use and damage and, to a lesser extent, on care, cleaning, and storage.
Cleaning: Climbing ropes should be washed occasionally by hand in cold water with a mild soap, rinsed free of the soap, and then spread out or hung up to dry in the air. Avoid direct sunlight, do not use a dryer, and do not place the rope above a heat source.
Care: Keep your rope off the ground to protect it from dirt which contains sharp small chips and crystals. Avoid contact with chemicals, acids, alkalis, bleach, oxidising agents (present in concrete), and embers, sparks or other sources of ignition, e.g., smokers. Avoid treading on your rope as this may work sharp particles into the core. Use climbing rope only for climbing - not for towing a vehicle.
Storage: Climbing rope should be stored, preferably after drying, at room temperature, ideally in a storage bag.
Life Expectancy: Manufacturers recommend a retirement schedules which errs on the side of caution and also, presumably, on the side of profit! How long you decide to use the rope depends on your own inspection, knowledge of the rope's history, and assessment.
If a rope has not suffered a major fall, i.e., approaching factor 2 (a fall double the rope distance from the belay); if the sheath shows no significant wear or damage; and if the rope has not been exposed to damage from chemicals: it is almost certainly safe to use it within the schedule shown below. However, repeated minor falls, heat from rapid rapelling, and rapelling using small diameter carabiners all tend to weaken rope.
Replacement:
- Occasional use, e.g., alternate weekends: every 4 years
- Every Weekend: every 2 years
- Sport climbing involving frequent short falls: every 3 - 6 months
- Major fall (approaching factor 2): immediately
- Flat spots, soft spots, becoming stiff, sheath damage: immediately
- Unsure of condition or history: immediately