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Thread: Using Foam Rope for Winterizing

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    Using Foam Rope for Winterizing

    When inserting the foam rope in the main drain and the return jets, is it supposed to go straight in, or is there some bending and cramming involved? I am a first time pool closer and my pool is 3 years old. When I try to get the foam rope into the main drain, it can't go down because there is water there and it just floats up. I'm not sure if I am supposed to suck all that water out of the main drain with a shop vac. Can you please advise?
    Toronto, Canada
    70,000 litres
    Sand Filter
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    Mod Squad Bama Rambler's Avatar
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    Re: Using Foam Rope for Winterizing

    Welcome to TFP.

    Never heard of using foam rope, but hopefully someone will be along soon to help.
    Dave J. TFP Moderator
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    Re: Using Foam Rope for Winterizing

    I was told it acts as a sponge to absorb any water that may still be in the lines after blowing them. But not really sure about the concept.
    Toronto, Canada
    70,000 litres
    Sand Filter
    IG Vinyl pool

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    Mod Squad JohnT's Avatar
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    Re: Using Foam Rope for Winterizing

    Quote Originally Posted by weezle
    I was told it acts as a sponge to absorb any water that may still be in the lines after blowing them. But not really sure about the concept.
    No, it doesn't absorb water but leaves expansion space for the ice if the line fills with water and freezes. It is closed cell backer rod.
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
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    Re: Using Foam Rope for Winterizing

    Thanks John, I appreciate it, though I'm still unclear how putting it in will CREATE space for ice to expand. John, can you tell me then also, if the piece must go straight in, or can it be folded and stuffed in. Thanks
    Toronto, Canada
    70,000 litres
    Sand Filter
    IG Vinyl pool

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    UnderWaterVanya's Avatar
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    Re: Using Foam Rope for Winterizing

    Quote Originally Posted by weezle
    Thanks John, I appreciate it, though I'm still unclear how putting it in will CREATE space for ice to expand. John, can you tell me then also, if the piece must go straight in, or can it be folded and stuffed in. Thanks
    I'm not familiar with this use - but since it is closed cell it will not absorb much water (just like pool noodle) and it will displace water volume in the pipe. If ice then forms and expands it is compressible unlike the rigid PVC pipe and so it will prevent the ice from pushing the pipe until it bursts by allowing the ice another direction in which to expand (away from the pipe). I would guess it is fine to run it in lengthwise but I'm not an expert on this and I don't know how far you can get yours to go in before a bend in the line stops you from getting it in further.
    Inlaws Pool Boy since June 14th 2012, Pool built ~ 2003, In-Ground, 16'x32'
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    Re: Using Foam Rope for Winterizing

    My uncle who was in the biz for many years, has used a standard garden hose, sealed on the ends and slid into the bottom drain pipes, since this is not practical to seal. As indicated, with water freezing, it pushes into the hose and keeps from bursting PVC (in theory). I have never done this, but sounds interesting.

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