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  1. #1
    Senior Member Yojimbo's Avatar
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    Is it waterproof?

    I have a box of scrap ripstop that I bought from a sailmaker. Its various colors and weights and averaging about 2 to 4 yards each sheet 42" wide. I used to use it to make kites. My question is how do you know if it is waterproof.

    If it is I can mske rarps and socks. Otherwise I will make UQs.
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  2. #2
    Senior Member Fish<><'s Avatar
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    pour some water into it (put a bowl under it first), bunch it up at the top, and try to squeeze the water through the material...

    If it is waterproof you will not want to make a standard sock, you will want to have ventilation (yes, even if it is classified as waterproof/breathable) otherwise you will have serious condensation issues. but waterproof is great for tarps.

  3. #3
    Senior Member Yojimbo's Avatar
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    Ok that was easy. Water resist maybe but certainly not water proof. Water didn't come through on it on but under simple pressure, came right through.

    Think it would be good for UQ? No idea if down proof.
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  4. #4
    Senior Member Fish<><'s Avatar
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    maybe a synthetic one, but i am no pro by any means when it comes to uq's. i only have a pluq. i will let someone else with more experience answer that one for you. It sounds like it might be dwr (durable water resistant) or calendared though, but i am not sure. In order for it to be used for a down uq, it needs to be calendared.

  5. #5
    Senior Member DemostiX's Avatar
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    'Down proof" ?

    Only known by testing.

    Some suppliers will specify they know a fabric is down-proof, and sometimes only for down of specified quality, or they may say they don't know. At least one supplier is explicit that down proof does NOT mean synthetic insulation will not poke through, and that is the responsibility of the buyer to confirm the fabric has the properties of insulation resistance for the specific insulation for garments. IOW: No blanket statements. <pun>

    Calendering is one process used to seal and put a shine on fabric, and it is associated with down-proofing, but it doesn't guarantee it.
    Last edited by DemostiX; 09-23-2012 at 01:46.

  6. #6
    Senior Member Fish<><'s Avatar
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    Thanks for the clarification demo, I was hoping someone of your level of expertise would chime in and I'm glad it was you. You are always so descriptive with your assistance.

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