Laying pond liner - this is how it is done correctly and professionally

Laying pond liner - this is how it is done correctly and professionally

Plan pond liner

First of all, you have to decide on a certain type of slide - we will provide a little help on this in this article.

also read

  • Attach pond liner - this is how it is done correctly
  • Lay pond liner without creases - this is how it works
  • Laying pond liner: why the temperature is crucial

When you have selected the right film material for you, you must determine the required size (length and width) of the film and order it. Calculating the size of the liner can be a challenge, depending on how complicated the pond shape is. In this special article we explain in detail how it works and how to calculate correctly.

You can then order the film from the manufacturer. When it is delivered, the laying can begin.

Note outside temperature

It is best to always lay the foils in summer. At low temperatures, most foils are less flexible and stretchable and therefore much more difficult to lay.

In addition, the brittleness of PVC films when it is cold can cause the film to tear when it is being laid. Such damage is more than annoying when the pond that has just been completed has to be repaired later immediately.

Important when laying

There are a few things you should definitely pay attention to when laying:

  • First, make yourself familiar with how the film will be rolled up or folded when it arrives.
  • Wear suitable footwear when laying (rounded rubber soles, in which no stones can get stuck, if in doubt it is better to go barefoot)
  • It is imperative that you ensure that the foil is not subject to tension or tensile loads when it is laid; this must be avoided at all costs.

Laying the pond liner - step-by-step instructions

  • Pond liner
  • sand
  • Pond fleece, cut to size
  • Gravel for terrace steps
  • Gravel for capillary barrier
  • Stones to weigh down the foil in the edge area
  • Helper (always recommended, unavoidable for larger ponds, 1 helper per 100 m² of foil)
  • Rake
  • spade

1. Prepare the pond liner

Bring the pond liner made by the manufacturer to the bank of the planned pond at a corner of the pond. See if there are any special laying instructions from the manufacturer. Such instructions exist in many cases - you should always follow them exactly.

2. Prepare underlayers

First, you always lay out any cable ducts you may need on the pond floor. Then add a layer of sand about 5 cm thick. This layer effectively protects the film from damage later and should have been taken into account in the planning.

Now lay out the pond fleece on the smooth, just layer of sand. It has to be wrinkle-free, take care. Then attach the pond fleece to the edges so that it cannot slip when the liner is placed over it.

3. Lay the foil

Together with the helpers, unfold the foil from the edge into the pit. Always brush creases together into a larger crease and fold it over. Fill the pond about a third with water to weigh down the liner and place pebbles on any terrace steps. This pushes the foil deeper into the pond. Let stand like this for at least a day. The edges of the film must be weighted.

4. Complete the pond

Fill the pond completely. When the water is filled in, you can begin to erect the capillary barrier. Build a 10 cm high hill around the edge of the pond, behind it an equally deep trench. Pull the edges of the foil over the hill into the trench and fix them there (for example between two stones). Fill in the trench with gravel. Possibly you can also attach a bank or embankment mat over the foil.


Terraces, peninsulas and especially terrace corners often cause real difficulties when laying the pond liner. If you are building a pond yourself, you should better avoid such complicated structures, unless there is no other way.