Underlayment on topside of EPDM liner

Discussion in 'Water Features' started by Stonehenge, Jul 17, 2001.

  1. Stonehenge

    Stonehenge LawnSite Bronze Member
    from Midwest
    Posts: 1,277

    We're working on a project that includes a pond. Our Aquascapes kit is on it's way, and I'm wondering about using the underlayment on top of the liner.

    The look we're shooting for is to have a small retaining wall (2' tall x 15' long) of natural stone (top stone will be 200# outcropping stones) with a waterfall spilling from the middle. While there shouldn't be any razor-sharp edges, I'm still concerned.

    Can I use the underlayment on top of the liner? Some of it will be exposed to water constantly, so I wonder about it breaking down in a couple years.
     
  2. aquascape

    aquascape Member
    Posts: 24

    Don't worry about the underlayment being on top of the liner. We do this all the time when setting multi-ton boulders on the liner. The underlayment will last the same amount of time as if it was under the liner.

    Good luck with this project,

    Conor
     
  3. Stonehenge

    Stonehenge LawnSite Bronze Member
    from Midwest
    Posts: 1,277

    Update -

    Worked like a charm. Lots of heavy stone on a double-layer of underlayment, on top of the liner. Lots of splishes and splashes. :blob3:
     

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