Article View: uk.rec.walking
Article #85Re: Hiking in Skirts
From: Chris Townsend
Date: Fri, 13 Aug 2004 21:53
Date: Fri, 13 Aug 2004 21:53
37 lines
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3546 bytes
In message <7uvpt5vkwse.fsf@ogre1.research.nokia.com>, MB <*@*.*> writes >Chris Townsend > >> Unfortunately in my experience radiant barriers in sleeping bags and >> synthetic filled jackets aren't breathable enough. I've tried several >> examples of both and found them sweaty (and one of the sleeping bags >> was quite noisy too). There may be models that perform better of >> course. > >Interesting. If it isn't practical to make radiant >barriers breathable enough, it seems that they wouldn't >be a good idea within loft insulation, after all. >Especially multiple barriers with insufficient >breathability might act as nasty moisture traps. I can see in problems in making a radiant barrier breathable enough for a sleeping bag or garment. > >Otoh, the VBL, which of course mustn't breath at all, >can well double as a radiant barrier. Incidentally, I >find that mylar "emergency" bags, especially if bothering >to modifying the neck area, make good lightweight VBL's. >Being nominally single-use items, the ones I've used aren't >very durable though, lasting perhaps a couple of weeks >of usage. They're noisy too. I think the noise would put me off. I've had a Rab VBL for several years but have always overheated the few times I've used it. If I ever go camping in the arctic in midwinter I'll take it. > >Otoh, with hermetically sealed loft insulation, >such as down-air-mats (like Stephenson's), or DAM >type bag/shelters (Cocoon), lack of breathability is >of course irrelevant, and multiple radiant barriers >would seem like a good idea especially for the upper >parts of the latter. > I've never used one a down filled mat.
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