Step 3 in Building the Dream Water Garden – Installing the Pond Liner


Now that you’ve excavated the pond like a pro, the next step is installing the pond liner. When building a pond, liner sizing is crucial and, if done correctly, it will help you set the stage for the addition of water and overall pond decorations:

1. When building a pond, liner sizing is crucial. To calculate the required liner size for the pond, use the following formula:

Length of Pond + (Depth x 2) + 2 Feet = Length of Liner
Width of Pond + (Depth x 2) + 2 Feet = Width of Liner

Calculate your stream liner using the length and width of your stream. Add 10% to the liner square footage to determine your underlayment needs.Pond 2

2. Make sure the interior walls and bottom of the pond are smooth and free of rocks or debris. If roots are visible, trim them back below the earth’s surface.

3. Underlayment will help aid in the smooth installation of your liner. Place the underlayment in first.

4. Utilize multiple people to assist in placing the liner into the pond. EPDM liner weighs a third of a pound per square foot. A 15x15 piece weighs 68 pounds. With people on each side, lightly feather the liner to get air under it. Then “float” the liner in place.