Tyvek+pad=condensation fix? :confused:

[EBC]

Has anyone tried putting a piece of Tyvek on top of their CCF in DL hammocks? Wouldn't this allow water vapor to escape and reduce the incidence/severity of sweaty nights?

[OutandBack]

Has anyone tried putting a piece of Tyvek on top of their CCF in DL hammocks? Wouldn't this allow water vapor to escape and reduce the incidence/severity of sweaty nights?

I thought a CCF pad was a VB. No additional VB required.

[jackleberry]

Tyvek isn't a vapor barrier, but CCF is. Putting a breathable material over a top of a nonbreathable one will not make the entire assembly breathable. You could cut the CCF up into strips and weave it back to gether--or poke lots of holes in it to add breathability. You could also use a vapor barrier bag next to your naked skin or hydrophobic (polypropeylene) underclothes--this will eventually stop your body from emitting any more moisture than it takes to get the relative humidity inside the bag above 70%.

[EBC]

Thanks for helping out a noob with newbie Qs!

Tyvek isn't a vapor barrier, but CCF is. Putting a breathable material over a top of a nonbreathable one will not make the entire assembly breathable.

Sure enough. Thus this setup would result in moisture collecting between the Tyvek and the CCF (rather than between you and the CCF), right?
Wondering if anyone has tested this.

You could cut the CCF up into strips and weave it back to gether--or poke lots of holes in it to add breathability.

This seems to be the best pad option i've read about so far.

You could also use a vapor barrier bag next to your naked skin or hydrophobic (polypropeylene) underclothes--this will eventually stop your body from emitting any more moisture than it takes to get the relative humidity inside the bag above 70%.

Never used a VB that way. Is this setup comfortable in temps above 50?

[jackleberry]

Thanks for helping out a noob with newbie Qs!



Sure enough. Thus this setup would result in moisture collecting between the Tyvek and the CCF (rather than between you and the CCF), right?
Wondering if anyone has tested this.



This seems to be the best pad option i've read about so far.



Never used a VB that way. Is this setup comfortable in temps above 50?

Regarding moisture between the tyvek and the pad... I imagine that you'd get plenty of moisture on both.

Vapor barriers are only safe/comfortable at low temps. I think 40 would be fine, as long as you didn't have too much other insulation. You can get a feel for what its like by putting a plastic bag over a hand or foot (secured with a rubber band). Kind of wet and cozy when its cold out--kind of sweaty and unbearable when its not.

[OutandBack]

Thanks for helping out a noob with newbie Qs!

Never used a VB that way. Is this setup comfortable in temps above 50?

In 50 degree weather I'd use a blanket between the layers of your hammock.
The GI poncho liner or an Army/Navy wool blanket.

IF your good with paracord you could gather the ends of either blanket and hang it under the hammock like an underquilt.

[Fiddleback]

Years ago, a post by Sgt Rock tipped the idea of covering a pad with a light fleece throw. I use(d) one sold by Campmor which weighed about 13oz and clipped it to the pad using clips found in an office supply section of a box store. It seems to work but, in my home range, I have very little condensation problems and I ultimately stopped using the throw or anything else on top of the pad.

But, as I said, it seems to work.

FB