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Treating waterproof polyester coats

(3 posts)
  1. fightingthefight

    Joined: Sep '17
    Posts: 38


    Posted 4 months ago
    Fri Nov 9 2018 7:26:00

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    I have two waterproof polyester coats that I need to treat. One is a heavy winter coat. The other is not padded. The care instructions say wash cold (no detergent) and dry warm. Will I permanently damage the coats if I either wash or dry hot? Or will I simply weaken the waterproofing in a way that can be easily fixed later with some waterproofing spray and another spin in a slightly cooler dryer?

    What I am concerned about with the hot dryer option is that I don't know how long it will take for the heavy coat to heat through to make sure that I give it long enough to get it thoroughly cooked for 30 minutes.

    As for the hot wash option, opinion is divided on the internet about whether polyester can be washed at 60°C (140°F). It seems that not all polyester is that same, or that some of it creases permanently when it is washed at a high temperature.

    If anyone can give me any advice I would be very grateful because I am completely reliant on the winter coat right now.

  2. SalsaVince

    junior member
    Joined: Oct '18
    Posts: 259


    Posted 4 months ago
    Fri Nov 9 2018 12:07:45

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    Do you have access to a large freezer that you could bag it up and stick it in for several days? (I think 4 is recommended). If not, another option might be a hand held steamer. I'm not sure if that would damage the waterproofing but I think it would be less damaging than washing and drying in heat for a prolonged time.

    "If you know the enemy and know yourself, you need not fear the result of a hundred battles."
    Not an expert. Just a survivor who's still learning.
  3. BigDummy

    Joined: Dec '13
    Posts: 3,892


    Posted 4 months ago
    Sun Nov 11 2018 21:03:47

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    Don't use a freezer, that's not reliable. I think the biggest risk of polyester in the dryer on high heat is coming into prolonged contact with the hot metal drum. Skip the washing and put them in the dryer individually on medium heat, which is still well above the lethal level for bed bugs. If you're concerned about the thickness just treat for a full hour, there should be no issues with reaching temp.

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