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  1. #1
    ^shane^'s Avatar
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    Waterproof/Breathable Outer Layer?

    I still don't have a hammock yet, but am already beginning to plan for quilts, both over and under.

    I have two Sierra Designs down bags that have their "Drizone" waterproof/breathable shell. These are wonderful bags and the waterproof shell is the real deal. Their shell material got me to thinking...

    Would an outer shell similar to Drizone (or any other waterproof/breathable) fabric laminate work for an underquilt? Would this cause trouble with condensation? I do not experience condensation problems inside the sleeping bags when in use.

    My thought is that this shell would protect the underquilt from getting wet from splash or wind-driven rain. I understand there might be a miniscule weight disadvantage, but seems worth it compared to carrying another "under cover" of some kind.
    "One of the best things you can do in this world is take a nap in the woods." ~ Jayber Crow by Wendell Berry

    "While it may be a lot of work, the view is best from the summit." ~ an anonymous staff member of Philmont Scout Ranch

    Enjoy the day
    Shane

  2. #2
    BillyBob58's Avatar
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    Well, I guess that would depend on just how breathable the material is. Most seem to feel that any of the WPB fabrics will end up causing some loss of loft from condensed moisture. Then again, JRB offers the Driducks poncho conversion meant to be used as an UC and that is WPB. I haven't read any comments yet about how well that works.
    For I consider that the sufferings of this present time are not worthy to be compared with the glory that is to be revealed to us....that the creation itself also will be set free from its slavery to corruption into the freedom of the glory of the children of God. For we know that the whole creation groans and suffers the pains of childbirth together until now.
    Romans 8:18,21-22

  3. #3
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    Driducks is breathable and waterproof. "microporous polypropolene."

    I think most underquilts are DWR outside and plain ol ripstop inside, to facilitate moisture transfer. Adding the Driducks as an undercover is of more interest to me than having a waterproof quilt; I want to be able to throw the quilt out to dry. I also like having the poncho with me to shed rain and/or the occasional waterfall spray from the pack.

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