Silnylon hammock layer

[FLRider]

It would wind up being a "winter only" hammock. If you want to spend extra money on an hammock that's also a vapor barrier, that's your look out.

However, I prefer my hammocks to be usable year-round. This is why my vapor barriers are removable (I use a poncho/undercover and a space blanket as under insulation during 50* to 70* F; it works as semi-dead airspace and a good wind-blown rain block for the hammock) and further away than the body of the hammock. I would not enjoy lying in a sil (or other vapor barrier) hammock warmer than ~70* F, as I would definitely wake up in a pool of sweat.

The best material for the hammock (in terms of weight/cost/strength) is lightweight uncoated nylon. Lightweight uncoated polyester is good, too, but tends to be a smidge heavier for the same strength (read: "weight rating"). I would avoid coated anything for the hammock body; if you want vapor barriers as a part of your system, make 'em removable.

Hope it helps!

[SnrMoment]

I sprayed my UQP with a light coat of Campmor for water and wind protection. Kind of an upgraded DWR - still breathes a bit, but it's an effective barrier to the wind/water.
No problems with condensation and it has been great in the cold weather.

[FireInMyBones]

I'm in the camp that everything below the tarp should be breathable.
Calendered ripstop, DWR treated are great but no syl for me.
hth

Oh I did not vote because I did not think this was a dumb question.

+1 This is my philosophy too. Same reason on the vote.

[sawgrassbrothers]

I was actually thinking about if i ever (heaven forbid) have to go to the ground and bivy it i would want something water proof in case the ground was wet. But i can see why it wouldn't be good for a hammock Thanks for all the replies and do you have any suggestions for a good bottom layer?

[OutandBack]

I was actually thinking about if i ever (heaven forbid) have to go to the ground and bivy it i would want something water proof in case the ground was wet. But i can see why it wouldn't be good for a hammock Thanks for all the replies and do you have any suggestions for a good bottom layer?

In a pinch you could use your poncho or waterproof ground sheet(going to ground) you could also use a small ground sheet under your hammock for your boots and pack.
hth