20616Re: [Hammock Camping] Tyvek hammock?
- Aug 20, 2010Ralph Oborn wrote:
> In general tyvek is a little noisy and since it is water proofWashing tyvek does improve flexibility and greatly reduces the noise. I
> can form condensation puddles under you.
> It can be "washed" and made more flexible (and quiet).
quite like the texture of washed tyvek. It's very much like paper.
Now, why do we get condensation from a waterproof hammock (tyvek,
silnylon) and not from a waterproof sleeping pad (thermarest's regular
and NeoAir, ensolite pads, etc)?
Actually, this last hiking trip (just back two days ago) was so humid
day and night, that I've got heat rash all across my lower back.
Sleeping on a breathable surface would have probably prevented the heat
rash. I was sleeping on a NeoAir.
One cold, humid, foggy night a few years ago, when car-camping at about
2500 m in elevation, I experimented with wrapping a 'truck windshield'
(i.e. about 2 mm of thin 'packing foam' lined with mylar--we can buy
these sized for 2-person and 4-person tents) around my hammock as an
outside, windproof layer. I did notice a puddle on the lowest point of
A year or so later, I used tyvek to make a 'weathershield' kind of like
Hennessey's--mainly to prevent my underquilt from being dampened by
splashback. I didn't notice any condensation on the inside layer (more
near 0*C nights with heavy fog), but I did notice the whole set-up was
much warmer without the 'weathershield'.
So, I am noticing some condensation. What about those people who are
inserting a layer of mylar (emergency blankets) between them and their
underquilts or Hennessey supershelters? What about condensation in a
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