Excavate a hole to conform to the required pond shape. The side banks should be made sloping inwards. Cut out deep areas (approx. 32" for small ponds and 40" for large ponds) and shallow areas (approx. 10") for plants as illustrated.

Trim off surplus material with scissors allowing sufficient overlap around the pond perimeter for anchorage.

Gradually run water into the pond, pleating and tucking the liner into shape. At first the liner will stretch, then as the volume of the water increases the liner will move inwards to the shape of the slope sides.  

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Determine the quantity of PondGard liner you will need. The following formula can be used to calculate the quantity of liner required for your pond:

Liner length = length of pond + 2x depth + 2x20" for perimeter 

= _______

Liner width = width of pond + 2x depth + 2x20" for perimeter   

= _______

Remove any sharp stones or roots and spread a good layer of sand over the base of the pond. Place a geotextile fabric as underlay before installing the liner. Do not drag the liner but unfold it carefully as to avoid sharp stones or other such objects cutting into the membrane. Anchor the edge of the liner with smooth sided rocks.

If you are a do-it-yourselfer, installing your own backyard pond can be a fun and  rewarding experience. Follow these 5 steps to begin your water garden experience: 

Need more?

Do you have a high-end pond project or are you a pond installation professional? Take our online professional training course called Introduction to EPDM Rubber Pond & Geomembrane Linings.