Managing Moisture In Bitter Cold

After three weeks sleeping in sub-zero temperatures, we’re getting a warming trend. I had plenty of insulation (2 sleeping bags), so I haven’t been cold at night. I have, however, had to deal with frost. Living and sleeping in subzero temperatures is an exercise in moisture management. The moisture expelled by your skin ends up as frost in the insulation of your sleeping gear, as well as in your boot liners. These must be dried daily, or they soon begin to lose the ability to keep you warm. In temperatures above about 10 degrees F, I’ve never had moisture build up from frost become an issue.

For sleeping bags, this will build up even if you aren’t breathing into your bag (which you shouldn’t do because your moist breath speeds the rate of icing).

As I was busy running a course, I wasn’t always able to get everything dry that I needed to. On two nights there was enough ice buildup in my sleeping bag where it was noticably cold when I got in. It soon warmed up from my body heat, and I took the time to dry it out the next day.

The challenges presented by extended stays in bitter cold must be met with a well-reasoned approach to maintaining the viability of insulation by managing moisture. When this is done well, living out in the cold is a much more enjoyable experience.

General

 


 

Our Sites
· JMB Field School – Long-Term Immersion: Semester & Expedition Programs
· JMB Trips – Classic Wilderness Guiding By Canoe & Snowshoe
· JMB Folk School – Short Courses, Crafts & Lodge-Based Programs
· School Of The Forest – Teen & Youth Programs
· JM Outfitters – The World’s Smallest Outfitter
· JMB Master Calendar – Complete List Of Scheduled Programs

Typos, Etc.
Note: Anything that appears to be an error in spelling or grammar is actually the author’s clever use of the vernacular, and as such is not an error, but rather a carefully placed literary device that demonstrates his writing prowess.

RSS
Facebook
Facebook
Google+
Google+
http://blog.jackmtn.com/managing-moisture-in-bitter-cold/
YouTube
YouTube
Instagram

Our Email List
Join our email list; it’s the best way to keep up with what we’re up to. We promise to never fill your inbox with junk and we never share or sell your information. We value your time and privacy. We won’t abuse either of them. More Info.


Featured In:
Jack Mountain Bushcraft Media Appearances Image

Life Member – MPGA
mpga graphic
Life Member – MWGO
mwgo graphic