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Thread: Liner joining

  1. #1
    Senior Member Rank = Jussai Ajm's Avatar
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    Liner joining

    Has any one had any experience at cutting and joining a liner . Cant afford glass and when looking at box weld they all say square or rectangular ponds . Hate all the unsightly and potentially dangerous folds and creases as my pond is a strange old shape

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    Johnathan

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    Senior Member Rank = Adult Champion RS2OOO's Avatar
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    No experience of it but there are specialist kits you can buy in the U.S for doing this as DIY for ponds - and they are quite expensive.

    But this roofing place appear to be selling the exact same stuff (you'll need to do homework just to be sure), and its fairly cheap, watch the video:

    https://www.rubber4roofs.co.uk/how-t...pieces-of-epdm


    It's definitely one or 2 steps beyond sealing a bottom drain, but probably doable and probably works out cheaper than a box weld.

    Personally I'd be inclined to make the overlap bigger and use two strips of the tape just to be sure...
    Last edited by RS2OOO; 23-06-2019 at 11:47 PM.

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    Quote Originally Posted by RS2OOO View Post
    No experience of it but there are specialist kits you can buy in the U.S for doing this as DIY for ponds - and they are quite expensive.

    But this roofing place appear to be selling the exact same stuff (you'll need to do homework just to be sure), and its fairly cheap, watch the video:

    https://www.rubber4roofs.co.uk/how-t...pieces-of-epdm


    It's definitely one or 2 steps beyond sealing a bottom drain, but probably doable and probably works out cheaper than a box weld.

    Personally I'd be inclined to make the overlap bigger and use two strips of the tape just to be sure...
    Cheers for that rs looks the job like you say home work to make sure its fish safe ect but that could be quiet easy scary but easy . . Would I be wrong in thinking cut and place floor in with say 5 inch all the way round to go up the wall sort out the corners then do a full wall wrap round weight to hold top over lap then glue tape floor and wall together . Bit worried on the joint think a thick bead of ct1 on edge of joint safe than sorry ?

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    Johnathan

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    Also might be worth having a look at Slickbe's build thread where he had his liner manufactured onsite.

    He could probably answer any questions.

    Rather than cut the floor out then weld the sides you might be able to use one complete strip to cover the largest side and the floor, then you'll only need to glue 2 pieces on, one for the curved wall and the other for the smaller flat wall.

    Mark it up inside the pond then it might be easier to lay it on the patio to weld it, so you essentially end up with a box weld liner to fit.


    But I have just read this which puts doubt in my mind about the tape method......

    "We always fully weld our liners for added durability and strength. We never use tape or glue."
    https://www.butylproducts.co.uk/prod...liner-flanged/
    They also do bespoke sizes if you provide measurements. That could be the better option if price comes up ok. I just don't know how you'd translate the radius of the curve into actual measurements.

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    Quote Originally Posted by RS2OOO View Post
    Also might be worth having a look at Slickbe's build thread where he had his liner manufactured onsite.

    He could probably answer any questions.

    Rather than cut the floor out then weld the sides you might be able to use one complete strip to cover the largest side and the floor, then you'll only need to glue 2 pieces on, one for the curved wall and the other for the smaller flat wall.

    Mark it up inside the pond then it might be easier to lay it on the patio to weld it, so you essentially end up with a box weld liner to fit.


    But I have just read this which puts doubt in my mind about the tape method......

    "We always fully weld our liners for added durability and strength. We never use tape or glue."
    https://www.butylproducts.co.uk/prod...liner-flanged/
    They also do bespoke sizes if you provide measurements. That could be the better option if price comes up ok. I just don't know how you'd translate the radius of the curve into actual measurements.
    That's my worry with the curve. I was going to draw it on a grid with a measurement every ft sort of like this red lines with measurements?

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    Johnathan

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    That's exactly how I'd do it.

    But don't take that is the right way.... I have no clue when it comes to drawing things and use grids for everything. My Son is equally crap at drawing and I taught him the same method.


    Anyway, who's up for a game of noughts and crosses.... I'll go first

    Attachment 28448

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  13. #8
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    Hahaha. Am the same grid helps but am still sh#t

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    Johnathan

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    Ha ha.... I'm the middle row...

    Attachment 28458

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    Or do we think this mite be a little better . Measure every 2ft on curve back to far corner point

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    Johnathan

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    Senior Member Rank = Adult Champion RS2OOO's Avatar
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    So you're having 2 bottom drains then? ha ha

    Attachment 28459

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    No 3 Haha. Get the tape out later and see what happens

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    Johnathan

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    Senior Member Rank = Adult Champion RS2OOO's Avatar
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    Ha ha I knew you'd do that. That bottom one is outside the pond limits, you have to stay within the pond!

    So I'd have got the top left or top right and won lol.

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    Quote Originally Posted by RS2OOO View Post
    Ha ha I knew you'd do that. That bottom one is outside the pond limits, you have to stay within the pond!

    So I'd have got the top left or top right and won lol.
    Haha fair dos I'll give ya that one then Haha. Going to measure pond today if I dare put a thread back on track Haha which do you think would work out better

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    Think the grid would give a more comprehensive representation.

    So if you did the grid to scale representing 50cm gaps, then put a long piece of wood on top of the pond to measure, then put the distance on each grid line.

    Like this:

    Attachment 28465


    That is how I'd do it but I honestly don't know if its the best way. The person to ask might be Bigcarpchaser, think he knows about this kind of stuff.

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  29. #16
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    Cheers I'll do that mate matches what I had in my mind. Might drop mr big a PM aswell see my 0 has moved Haha

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    Johnathan

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    OK so you have got it back on topic but for how long? LOL

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  33. #18
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    What were we talking about again

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    Johnathan

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  35. #19
    Quote Originally Posted by Ajm View Post
    What were we talking about again

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    No idea I just know that I've got an Uncle Burt and he's worse.

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    what your measuring really is a quadrant,if your two straight sides are same length,all you need do is measure from where they join out to the centre of the round edge,then measure the length of that rounded edge,a good liner company should be able to calculate the arc from that,,,,andi

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