Remember that any vapor
barrier, like tyvek, will cause excessive condensation if wraped completely
around an occupied hammock--unless there is a lot of ventilation to prevent
it. A vapor barrier tarp 2-3' above the hammock generally handles the
condensation just fine. Waterproof-breatherable fabrics, like gore-tex
used in bivy sacs can also be VERY problematic. Vapor barriers wraped
around the bottom and sides of a hammock will greatly increase the warmth
while body moisture is carried upward and escapes. Vapor barrier bags
completely around one's body inside a sleeping bag or hammock are also
extremely effective, but the trapped moisture is uncomfortable for most
folks--this is a cold weather technique, not appropriate for summer temps.
colored ripstop could be useful: breatherable fabric for hammock bottoms
(cool-cold temps), non-breatherable fabrics for vapor-barrier- bags (very cold
temps). Would be interested hearing about your use of
main problem I'm having is the fly - from my experiments, I think
I need a
8' x 10' diamond. I'd like it to be as light as possible.
www.pointnorth.co.uk have 150cm wide light ripstop for only 1.50
stirling per metre - would that be suitable? Also, has anyone tried
using tyvek as a sort of 'blanket' instead of a fly? Could be
wrapped right around the hammock to make a tube tent.
pointnorth also have silverised ripstop nylon - anyone ever used
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