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  1. #31
    Senior Member sbmcghee's Avatar
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    Spidennis,

    You didn't use any other kind of underinsulation with it? Just the wool blanket? Very cool.

    Tom,

    A tarp? That's one I had never thought of.
    "The difference between genius and stupidity is that genius has its limits." - Albert Einstein

  2. #32
    Senior Member spidennis's Avatar
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    Quote Originally Posted by sbmcghee View Post
    Spidennis, You didn't use any other kind of underinsulation with it? Just the wool blanket? Very cool.
    oh no, i had a pad and sb in there with me, but I was much too warm! I wanted to try shedding stuff to see what I can get away with, but wouldn't you know it, the weather got better, dang it! this is a tool in my bag of tricks that I'll be willing to use though when the time comes around again.

  3. #33
    in it for the naps oldgringo's Avatar
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    Quote Originally Posted by tomsawyer222 View Post
    yeah but if you wrap it in tyvek and make it not breathable then why not just carry a CCF?
    Tyvek is breathable...it is not a vapor barrier.
    Dave

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  4. #34
    Senior Member tomsawyer222's Avatar
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    Quote Originally Posted by oldgringo View Post
    Tyvek is breathable...it is not a vapor barrier.
    wrap yourself in tyvek and tell me its breathable.... if water cant get in water cant get out

    if water can get out water can get in.. its a universal law

  5. #35
    Old Gorge Rat Hawk-eye's Avatar
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    Quote Originally Posted by tomsawyer222 View Post
    wrap yourself in tyvek and tell me its breathable....
    From the Dupont webpage on Tyvek

    DuPont™ Tyvek® brand protective covers are made from high-density polyethylene (HDPE) in a proprietary manufacturing process that creates a unique balance of properties that are ideal for a protective cover.

    Protective covers manufactured with 100% DuPont™ Tyvek® provide superior protection from harmful environmental conditions, are lightweight and exceptionally breathable, and strong, durable and long lasting.

    WARNING: Will discuss Rhurbarb Strawberry Pie and Livermush at random.


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  6. #36
    Senior Member Barefoot Child's Avatar
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    Tyvek Qualities

    Hey Hawk-eye,
    thanks for the post, sure clears up the breathable or not breathable thingee...doesn't it.

    PS--My house just got wrapped with it (TYVEK) this past summer before they put the new siding on.
    "If'n I'm gonna fall, someone is gonna' watch."
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  7. #37
    Senior Member tomsawyer222's Avatar
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    Quote Originally Posted by Hawk-eye View Post
    From the Dupont webpage on Tyvek

    DuPont™ Tyvek® brand protective covers are made from high-density polyethylene (HDPE) in a proprietary manufacturing process that creates a unique balance of properties that are ideal for a protective cover.

    Protective covers manufactured with 100% DuPont™ Tyvek® provide superior protection from harmful environmental conditions, are lightweight and exceptionally breathable, and strong, durable and long lasting.
    well if dupont says so then let no one stand in the way of that

    Like i said wrap your self in tyvek building wrap not the clothing version and see how much you sweat

    even in the clothing stuff we use it at work for confined space entry its hot and sweaty very quickly

  8. #38
    Senior Member TiredFeet's Avatar
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    Quote Originally Posted by tomsawyer222 View Post
    well if dupont says so then let no one stand in the way of that

    Like i said wrap your self in tyvek building wrap not the clothing version and see how much you sweat

    even in the clothing stuff we use it at work for confined space entry its hot and sweaty very quickly
    Sweat is not vapor. Breathable materials pass water vapor, not necessarily liquid water. DWR coated ripstop nylon is breathable, but liquid water pools on it.

  9. #39
    Senior Member tomsawyer222's Avatar
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    Quote Originally Posted by TiredFeet View Post
    Sweat is not vapor. Breathable materials pass water vapor, not necessarily liquid water. DWR coated ripstop nylon is breathable, but liquid water pools on it.
    thats my point you once you start sweating in them or on them you will be wet the liquid that gathers on the surface will form a vapor barrier



    regardless in this application it would not work cause the fibers on a woolen blanket and very tough and would migrate thru tyvek anyway thats why most old wool comforters have cheese cloth inside it help contain it

  10. #40
    Senior Member tomsawyer222's Avatar
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    Quote Originally Posted by oldgringo View Post
    I have a wool shirt with a Gore Windstopper lining. It is crazy warm. Warm, to the point that it is unwearable on all but the coldest of days.

    A layer of Tyvek sewn to the outside of a wool blanket might prove surprising.
    From the very beginning you illustrated my point a wool shirt with a lining is unwearable on all but the coldest days they takes away one of the two major advantages in wool its ability to thermo regulate your body temperature

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