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  1. #1
    New Member luckybudyo's Avatar
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    A Question About Windproofing

    Okay so I understand that a sleeping bag doesn't maintain it's heat underneath due to the compression taken on by your body weight, (tried and tested hehe), but I see a lot of heat is lost by the air flow underneath the hammock. My question is. . . would a waterproof or water resistant bag, such as an REI Expedition bag, help any?? I figured if it's waterproof, it's gotta be windproof as well. I've got a -20 degree bag, and hoping to use it in 10+ weather.
    Any input would be great. I haven't seen a thread on the forum asserting this question or asking for experiences yet.

  2. #2
    Bubba's Avatar
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    What I think many people do is use an underquilt for insulation and their tarps for wind protection.
    Don't let life get in the way of living.

  3. #3
    all secure in sector 7 Shug's Avatar
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    When I know I am going to need some extra wind protection...... I tote along my weather-shield. It is the grey cover over my hammock.
    Shug

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  4. #4
    Senior Member Slo's Avatar
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    Quote Originally Posted by Shug View Post
    When I know I am going to need some extra wind protection...... I tote along my weather-shield. It is the grey cover over my hammock.
    Shug

    You experience any condensation issues with it Shug?
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  5. #5
    New Member luckybudyo's Avatar
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    Right, I know about underquilts and overquilts, what I'm asking is if a waterproof bag would be a sufficient layer to negate the use of a quilt

  6. #6
    what temps? might help at 60 degrees.
    "Tenting is equivalent to a bum crawling into a cardboard box, hammocking is an art" KK

  7. #7
    Senior Member SteelerNation's Avatar
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    Shug,

    Is that undercover made out of breathable nylon or SilNylon? I'm guessing Sil, but just checking.

    Thx,

    SN

  8. #8
    all secure in sector 7 Shug's Avatar
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    Quote Originally Posted by Slo View Post
    You experience any condensation issues with it Shug?
    No Sir.... none at all. It hangs loose to catch warm air.
    Shug
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  9. #9
    Senior Member JCINMA's Avatar
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    I think I see what you are saying: you wonder if the waterproof nature of a sleeping bag is enough to negate the effect of the air moving underneath you.

    The short answer: it really won't help.

    Longer version: from what I can tell, you would still be crushing the insulation, and less loft means more cold. What you could do is put the sleeping bag on the outside of the hammock, pea-pod style. Then, the sleeping bag acts like a cocoon, and the the hammock still bears your weight. That would work in windy situations to provide insulation all-around you.
    Be like Bob

  10. #10
    flatline's Avatar
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    the bag will help impede the wind's penetration but not it's cooling effect. in combo with a blue ccf pad you will much better protected.
    trial and experimentation is the best way to test these things out. that's one of the many reasons that so many HF'ers in our back yards.

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