equally as VB involves very careful thermal management, it’s also pretty probable to deal with the amount of humidity buildup inside a non-VB sleeping system by steering clear of overheating. In that regard, your place about putting on more insulation layers below your sleeping bag is properly taken: that excess layer generates a further temperature gradient among you as well as the insulation during the bag, making condensation In the bag (or simply in the layers) much more most likely. I’ve discovered that, for the most part, trusting the bag to maintain you heat down to its “comfort and ease ranking” with minimum or no levels, as complicated as it may well feel after you initial go into a frigid tent, pays off in the end, and will often bring about a snug night time’s slumber without having to deal with a damp VB liner, and with little if any condensation inside the bag.
What do you're thinking that? Alternatively, I had thought about receiving the synthetic Mount Laurel models spirit quilt and either a forty eight or 38° temperature score with the head slot to lure the moisture. Dying to understand what you believe of Those people differing possibilities. -H
The creator explained his sleeping bag obtained all-around 30 lbs . of ice all from body moisture. every time he made camp it took lengthier and extended to heat up the bag so he could go to sleep.
possessing realized the worth of VBL’s, I also commenced experimenting with them in other circumstances, like through the shoulder seasons and on completed-in-working day skiing and snowshoe journeys.
If you had a VBL bag liner or garments, your sleeping bag wouldn't became soaked from perspiration, which might have enhanced your situation. nevertheless the down even now would've absorbed ambient humidity, producing loss of warmth.
It’s Most likely having relatively esoteric right here but I’m match to generally be corrected and educated if you can spare your time and efforts and wisdom to condition my knowledge of these mysteries.
A watchful understanding of ASTM E1643 is required When selecting and setting up an effective under-slab vapor proofing program. Specifiers and installers alike can reap the benefits of the criteria in-depth Within this regular follow.
once the achievements of a VBL in my sleeping bag past 12 months, and plastic baggage on my feet I’m taking the RBH VBL jacket and socks out to Perform this Wintertime :). My only problem is damp toes 24 hrs on a daily basis for the extended legs (1-3 weeks).
this tends to trigger down and artificial insulations to in the long run collapse. And it will bring about undesired evaporative heat decline with other fibers like polyester, nylon, and wool.
But, OTOH, considering that I started off utilizing the SWL with fuzzy stuff, I don’t remember at any time emotion disagreeably moist, sticky and clammy, besides on All those couple occasions After i let myself in excess of warmth and began outright perspiring. And that has undoubtedly happened, however even then the moisture did not go into my insulation And that i didn’t put up with evaporative cooling. But, I agree You will find there's fantastic bit about your complete subject matter that is certainly subjective. It would be simple more than enough To place it to the scientific take a look at in terms of heat and loft retention, but I have not noticed that. besides my very own personalized experiments, with N=1. So, that may be very little numbers for any scientific analyze!
I wound up having that sleeping bag back to REI but now I’m curious if this was my sweat freezing in the bag? I assume This is often my main imagined at the rear of heading having a VBL as which was a truly depressing night time. Also, I will certainly check out the VBL mitt.
The a single downfall with VBL garments is usually that I need to have an entire VBL go well with, that is heavier and a lot more elaborate than the usual bag liner. In the long term, my sleeping bag may be compromised if I'm not wholly lined with VBL’s. A complete match would come with socks, pants, jacket, gloves, and also a hat or balaclava.
The RBH stuff are going to be Substantially nicer, a lot more multi-use owing to higher appears to be, and I would like some. But I can tell you this Considerably more affordable stuff, worn underneath in any case exactly where it can not be found, will thoroughly get The work performed. These people KNOW VB idea and software, which is read more obviously:
Fred Bar on November 27, 2016 at 11:34 am hello there. owning carried out some Wintertime mountaineering/tenting at RMNP, I am planning to do a number of a lot more bigger altitude Winter mountaineering/tenting from the USA right before moving on to summits like Huayna Potosi in Bolivia later this 12 months and Aconcagua in Argentina a while following that. naturally these are definitely simpler to do than other mountains of the exact same altitude, but to me altitude will be the key concern (AMS/HACE/HAPE). My second worry is cold temperature as I happen to be Mastering that again and again a number of the expedition clients can't get to the top rated on account of insufficient warming of toes and/or arms and The point that you need to do feel colder at elevation for a similar temperature at ground degree.