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  1. #1
    Member The Wolf in a Hammock's Avatar
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    Is Sil Downproof?

    Is Sil downproof?
    Also would it be good for the outside of a winter topquilt or under quilt?

  2. #2
    Senior Member lukesteg's Avatar
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    If the fabric was calandered before the sil- impregnation then i guess you could use it. With the few tests ive done sil seemed to hold the down in fairly well. Make sure you use a more breathable fabric for your inner shell.
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  3. #3
    2Questions's Avatar
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    Quote Originally Posted by The Wolf in a Hammock View Post
    Is Sil downproof?
    Also would it be good for the outside of a winter topquilt or under quilt?
    If your going to use Sil on the outer side of a winter UQ, you better be using a vapor barrier between you and the inner inside of the UQ. You will have condensation issues if you don't. On multinight trips when temps are below 35, the condensation will collect in the UQ. With that said, some use the Sil on the inner side of the UQ as a vapor barrier to minimize this issue.
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  4. #4
    Senior Member WV's Avatar
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    Quote Originally Posted by The Wolf in a Hammock View Post
    Is Sil downproof?
    Also would it be good for the outside of a winter topquilt or under quilt?
    Quote Originally Posted by 2Questions View Post
    If your going to use Sil on the outer side of a winter UQ, you better be using a vapor barrier between you and the inner inside of the UQ. You will have condensation issues if you don't. On multinight trips when temps are below 35, the condensation will collect in the UQ. With that said, some use the Sil on the inner side of the UQ as a vapor barrier to minimize this issue.
    In other words, (1) yes, and (2) no.

  5. #5
    Member The Wolf in a Hammock's Avatar
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    Ok thanks for clearing that up, so i could use sil for my down quilts but had should make sure to use it on both sides of the quilt as to not catch vapor inside the down.
    I could use a layer of insultex as the inner shell, or with some ripstop over it so im not rubbing all on the IX, which would act as a vapor barrier and increase the insulation value a tad bit.

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