How to Fit a Butyl Pond Liner

Written by joshua roberts
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How to Fit a Butyl Pond Liner
Small aquatic gardens benefit from butyl pond liners. (koi pond image by MPH from

Butyl pond liners are one of the more popular methods of sealing a pond bottom, especially in koi ponds and small aquatic gardens. The thick, flexible material is durable and waterproof, making it a near-perfect solution for small-scale use. Of course, no liner will perform well if the initial installation and fitting are done incorrectly. The best practice is to make the liner fitting one of the first tasks you undertake when building your pond. If you're working with an existing pond, you'll need to drain your pond and strip back some of the border.

Skill level:
Moderately Easy

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Things you need

  • Sharp knife
  • Landscaping stones or bricks

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  1. 1

    Dig your pond according to your needs and wishes. Once you've finished digging, take a large piece of butyl pond liner and set it over the pond opening.

  2. 2

    Spread the pond liner out all over the pond area. Press the liner down into any depressions or low spots, using small rocks or pebbles to hold it in place if necessary.

  3. 3

    Fill the pond with water slowly. As the water level rises, it may further displace some of the liner, so you want to do this before trimming any excess liner.

  4. 4

    Lay your landscaping stones around the edge of the pond once the liner has been completely conformed to the shape of the pond bottom. You'll have quite a bit of liner that extends beyond the edge of the pond.

  5. 5

    Take a sharp knife and trim the excess butyl pond liner back to the landscaping stones. Mulch, lay topsoil and grass seed, or plant flowers according to taste.

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