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Thread: Pads & Sweat?

  1. #1
    Senior Member Kankujoe's Avatar
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    Pads & Sweat?

    I've been reading about people not liking pads because they cause sweating. Is this only a problem when sleeping in a hammock? Or is it the same when sleeping on the ground?

    I have used pads for years when tent camping or open air camping but I've never had issues with sweating. Would this be different for me in a hammock? The only times I've had issues like this were when the outside temperature was just uncomfortably hot.

    Those who have issues with this, is it because you slept directly on the pad without a sleeping bag or blanketing under you, between you and the pad? Or is it something peculiar to hammock sleeping?

  2. #2
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    I've never had condensation problems either, used a mat forever on the ground and suspended - I guess it depends on how much you sweat, but mainly on the thermal quality of your mat. Cheap, thin mats that do not insulate well tend to be colder against your body so are more prone to cause condensation. Thermarests or equivalent are great insulators and thus far I have had no problems with them in my -18 down bag. I sleep butt nekked too which may help evaporation.

    There should be no difference between sleeping on the ground or in a hammock.

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    gargoyle's Avatar
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    Sps

    One thing, IMO, that contributes to SPS, (sweat pad syndrom). I sleep like a rock in my hammock, moving very little during the night. I used a pad on the ground prior to hammock camping and would toss and turn all night. I don't think I layed in one position long enough to create a sweaty spot. Or layed in one position long enough to get a good nights sleep, either.
    I think if I'm sweating, I'm probably overinsulated, not a bad thing in most cases, but I need to figure out a way to be able to ventilate. A breathable fabric wrapped around the pad may help. Or, small vent holes in pad.
    Of course, either of these options create problems as well. Venting with small holes would allow for a draft during cold nights. Fabric would add weight to my setup. Not that I'm counting grams, but I want things simple.
    Right now, if I wake up and realize I'm sweating I just roll over on my side to allow for venting. Its working.
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  4. #4
    Dutch's Avatar
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    It has been suggested that when you are on the ground you tend to roll from side to side more allowing the sweat to evaporate. I know I do as I try to got off one pinch point so I can create another. And you are so comfortable in a hammock that you don't roll as much.I thru'd with a z-rest and sometimes there would be puddles in the eggcrates. I don't think I sweat much more then average.
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  5. #5
    Senior Member animalcontrol's Avatar
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    Quote Originally Posted by CR0M View Post
    I've never had condensation problems either, used a mat forever on the ground and suspended - I guess it depends on how much you sweat, but mainly on the thermal quality of your mat. Cheap, thin mats that do not insulate well tend to be colder against your body so are more prone to cause condensation. Thermarests or equivalent are great insulators and thus far I have had no problems with them in my -18 down bag. I sleep butt nekked too which may help evaporation.

    There should be no difference between sleeping on the ground or in a hammock.
    The r value (insulation rating) of CCF pads is GREATER than that of most self inflators (thermarests) per inch of thickness.
    The problem with CCFs is they do not breathe. Your inflatables will breathe some. UQs breathe the best.
    And that is why you have more condensation issues with CCFs.
    Condensation varies greatly from person to person, environment to environment...plenty of great info on this site if you search condensation threads.
    A simple layer of ripstop between you and a CCF pad will do wonders for consensation issues...whether it eliminates it in ALL situations depends on you and your situations.
    while this article (authored by Youngblood) doesn't address condenstion, it does have a wealth of info about upper/lower insulation, specifically r values and recommended temp ranges for most pads... http://www.hammockcamping.com/Newsle...06/Jan2006.htm
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  6. #6
    Senior Member Cannibal's Avatar
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    Sweater here!

    I agree that the difference between pads on the ground and in a hammock boil down to the difference in sleep movement. I hardly move at all when I sleep in a hammock. On the ground, no telling where I'll end-up. There is no chance for moisture to escape when I'm in a hammock.

    My worst nights with a pad were spent laying directly on top of them. Anything, even a layer of ripstop, between me and the pads helps tremendously. I still wake-up with my backside a little damp, but not soaked. Although expensive, underquilts make those issues just go away.

    In the interest of full disclosure, I sweat a lot anyway and I sleep much warmer than the average person. Pads and I are just kind of natural enemies.
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  7. #7
    Knotty's Avatar
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    On the ground I've only used thermarests and have sweated them. Last winter after two nights at around 40deg I went to pack my bag and only then discovered it was soaked with condensation. I don't think inflatable pads breath at all, otherwise they wouldn't hold air.

    In the hammock pads conform even more to your body, increasing the sweat factor.
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    I sweated a wee bit but never enough to bother or chill me......
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  9. #9
    Senior Member animalcontrol's Avatar
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    Quote Originally Posted by Knotty View Post
    On the ground I've only used thermarests and have sweated them. Last winter after two nights at around 40deg I went to pack my bag and only then discovered it was soaked with condensation. I don't think inflatable pads breath at all, otherwise they wouldn't hold air.

    In the hammock pads conform even more to your body, increasing the sweat factor.
    technically your right...
    the fabric covering the inflatable mattress will allow your back to breathe (well, migrate moisture from under you so it can evaporate) not the mattress itself....
    results are the same

    knotty...if you have moisture issues with a thermarest, do not even try a simple ccf...WOW, you might need a lifejacket!
    makes you appreciate your SS more, doesn't it!
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  10. #10
    Knotty's Avatar
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    Quote Originally Posted by animalcontrol View Post
    technically your right...
    the fabric covering the inflatable mattress will allow your back to breathe (well, migrate moisture from under you so it can evaporate) not the mattress itself....
    results are the same

    knotty...if you have moisture issues with a thermarest, do not even try a simple ccf...WOW, you might need a lifejacket!
    makes you appreciate your SS more, doesn't it!
    The SS is great, but even there I'm finding moisture. At least its not in my bag or against my skin.

    Maybe all this loss of moisture is why I'm usually cold. Too much evaporative cooling.
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