- Feb 9, 2004Jackie,
My opinion is that your closed cell foam pads act as a vapor
barrier. Since you are most likely staying in pretty much one
position all night, it doesn't give your insensible perspiration a
chance to evaporate like it does when you toss & turn when sleeping
on the ground. My advice is to try controlling your perspiration.
One way is to incorporate some wicking fabric against the pads
(sleeve or wrap). Another way is to try sleeping in different
positions during the night (back & side). Another way is to wear
vapor barrier clothing (rain gear). Another approach is to use a
closed cell foam pad with open cells for the top pad (Zrest,
Ridgerest, egg crate) and hope the condensation that collects in the
open cells doesn't wet your bag.
I suspect that there are many other possible solutions, this web site
http://chattanooga.net/~cdp/hammock/hammock.htm describes a homemade
hammock that has sewn-in breathable synthetic insulation in addition
to a closed cell foam pad (that was in a sleeve). He was still
getting condensation so he cut many tiny holes in the closed cell
foam to make it breathable. I don't know if the tiny hole approach
would work with stacked pads, but it is an idea worth knowing about.
--- In email@example.com, "jlevans7"
> Good afternoon,as
> I currently use a couple of overlaping blue, closed cell foam pads
> insulation for my HH. I use this during the spring and fall. I
> notice there is usually some condensation on the pads resulting in
> dampness on the bottom of my sleeping bag in the mornings. Any
> thoughts on prevention of this condensation?
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