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Thread: Sealing a liner to sandstone

  1. #1

    Join Date
    Aug 2012
    East Sussex
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    Sealing a liner to sandstone

    I have moved into a house with a rudimentary unfiltered pond in a spectacular setting beside 40foot sandstone cliffs. The previous owner excavated a "bowl" down to sandstone bedrock and it seems to be watertight. At present it holds about 10,000 gallons but there is potential to double that through a small amount of re-inforcement of the pond sides.
    I would like to develop this into a koi pond (I had a 6000gallon purpose-built pond at my last house). However, to install liner and bottom drains in the conventional way, I will need to seal it to the sandstone cliffs in a way which is not obtrusive.
    Has any member tackled this issue before?
    Mike, Sussex, UK
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