Your Old Rope Lost Half Its Strength. Silently.

Here is the bit nobody tells you when you retire a climbing rope. It does not go weak all at once, and it does not look any different when it does.

A rope that has been worked hard for a few seasons can be carrying about half the strength it left the factory with. Same colour. Same thickness. Same coil, in the same bag, on the same shelf. Nothing on the outside to warn you.

That is not me guessing. The gear-testing crew at HowNOT2 pulled a badly worn rope until it let go. It broke at around 6 kN. A healthy rope of the same sort takes roughly 14 kN. Less than half, on a rope somebody was still happily tying into.

The damage you can see is not the damage that counts

A climbing rope is two things in one. There is a core running down the middle doing nearly all the work, and a woven sheath wrapped round the outside protecting it. You only ever touch the sheath.

So when a rope gets tired, it gets tired where you cannot look. Every fall stretches those core fibres and they never fully spring back. Grit works its way in and saws away from the inside. Sunlight does its bit. Years pass. The sheath still looks grand.

That is why the advice is a date, not a look. Five years of hard use. Ten years even if it has sat in a cupboard doing nothing. Retire it anyway.

So how strong is a retired climbing rope?

Strong. Just not strong enough for the one job it was built to do.

This is where folk get tangled up. Retired does not mean worn out. It means the safety margin has gone, and that margin is the whole point. A climbing rope has to catch a falling person, over and over, with room to spare every single time. Once you cannot promise that, the rope is finished climbing. Quite right too.

But holding your trousers up is not catching a falling person.

Why that same rope makes a cracking belt

A rope that gives up at 6 kN is still holding something like 600 kg. Nobody is putting 600 kg through a belt buckle. Not even after Christmas dinner.

So here is the daft part. That rope goes in a skip with hundreds of years of nylon ahead of it, having cost about 46 kg of CO2 to make in the first place, while it is still tougher than nearly anything hanging on a rail in a high street shop. A rope that has been stretched, fallen on, dragged over rock and written off is still better material than most things sold as new.

That is the bit I could not leave alone.

Climbing walls, climbers and rope access workers around Scotland send me their retired rope. In January alone we kept over 5 km of it out of landfill. It turns up at a wee studio in Aberdeen, gets cut, sorted, matched and sewn, and goes back out with a second job to do.

A recycled climbing rope belt made to your exact waist, 22 to 50 inches. Climbing rope keyrings from a fiver. Rope coasters at £4, where no two ever match because no two ropes did. All of it out of gear that had already done the hardest job there is.

Your rope did not fail. It just retired. There is a difference, and it is worth about 600 kg.

Less waste. More miles.

Stay classy and remember,
Make Waste Useful.

George