Garden ponds can be a blessing or a curse for their caretakers. Improperly applied pond liners can continually get holes, cuts and have roots penetrate them. These problems can lead to muddy water, loss of adequate water for pond wildlife, and diseases in the water from the soil under the liner. To prevent these problems proper installation is essential.
Place 2 inches of sand over the entire bottom surface of the pond hole. This will prevent rocks and roots from puncturing the liner. Lightly sprinkle the sand with water to tamp the sand in place.
Cover the sand with a geotextile underlayment to further protect the pond liner and provide a cushion from rocks.
Seek the assistance of friends and neighbors to carefully open and drape the pond liner across the pond. Verify that it completely overlaps the pond and that there is an equal amount on all sides.
Secure the edges of the liner with rocks and bricks to prevent it from blowing away while the pond is filling.
Fill the pond with water. Be sure to have any wrinkles and folds out of the liner as it is filling. Be sure to reposition the rocks and bricks each time the liner is pulled tight. Once the pond is completely filled with water, trim away the excess liner with an X-acto knife. The edges of the pond can either be buried in a trench and covered with dirt, or simply covered with decorative rocks.