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Question about rope storage


Original Post
Climb.tooth.radish · · Unknown Hometown · Joined Mar 2015 · Points: 0

Okay so this has been on my mind and I'd thought I'd ask and see if anyone has an informed answer. For most of the summer I have kept one of my ropes, a petzl Volta 9.1 mm 60 meters, in a black/grey Rubbermaid storage bin on my back deck. The bin is in shade all day except for a three hour span in the morning. Is it possible that UV rays from the sun might be infiltrating the bin and damaging my rope during those three hours a day when the bin is in the sun? Thanks for listening.

Bill Shubert · · Lexington, MA · Joined Jul 2012 · Points: 55

I'd be more worried about heat than sun. Especially if the bin is a dark color, it could turn into a solar oven for three hours a day.

Seth Jones · · New Lenox, IL · Joined Feb 2015 · Points: 25
Bill Shubert wrote:I'd be more worried about heat than sun. Especially if the bin is a dark color, it could turn into a solar oven for three hours a day.
I believe direct sunlight is more damaging than heat.
Robert Cort · · Unknown Hometown · Joined Oct 2009 · Points: 800
Climb.tooth.radish wrote:Okay so this has been on my mind and I'd thought I'd ask and see if anyone has an informed answer. For most of the summer I have kept one of my ropes, a petzl Volta 9.1 mm 60 meters, in a black/grey Rubbermaid storage bin on my back deck. The bin is in shade all day except for a three hour span in the morning. Is it possible that UV rays from the sun might be infiltrating the bin and damaging my rope during those three hours a day when the bin is in the sun? Thanks for listening.
Sun cannot "infiltrate" through a black/grey bin, unless the lid is off, or the bin has major cracks. Heat yes, but no UV exposure to be worried about. Both heat and UV exposure can have a negative effect on long chain polymers (which is what you should be worried about), but I can't quantify the effect of heat. A number of real-world (but unscientific) tests of UV exposed rope (which should be worse than heat) have shown that the effect over a limited duration, while certainly measurable, isn't immediately catastrophic. caimateriali.org/index.php?…
Climb.tooth.radish · · Unknown Hometown · Joined Mar 2015 · Points: 0

Thanks everyone. The bin does not actually get very, very hot inside, and since UV is not an issue I think my rope should be fine.

John Badila · · Salt Lake City, UT · Joined Sep 2011 · Points: 15

In my not-so-expert opinion, your rope should be fine. But might I suggest, if space is at a premium, swap that rope for a couple of jackets from the back of your closet--three hours of warm weather a day won't kill a jacket, and your rope could live indoors.

Greg D · · Here · Joined Apr 2006 · Points: 871

Imagine if you climbed in direct Sun, at altitude, several days per week! People do that you know.

Your rope is fine.

highaltitudeflatulentexpulsion · · Colorado · Joined Oct 2012 · Points: 35
Robert Cort wrote: Both heat and UV exposure can have a negative effect on long chain polymers (which is what you should be worried about),
So lets assume it's a black box and he lives in Phoenix. I still don't see the inside getting much hotter than 160 degrees.

Is there any data on the exact temp that could damage a rope? I bet it's quite a bit hotter than that.
keithconn · · LI, NY · Joined Jan 2015 · Points: 35

Did what I did at one point. Contact the manufacturer. They reassured my decision.

Guideline #1: Don't be a jerk.

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