Get a Rollgum EPDM liner quote for your project

Tell us your project size and location. We’ll work out the liner you need and give you our best delivered price.

    Dam information

    What width x length (m) liner do you need? Use Figure 1 (Dams) or Figure 2 (Ponds) to determine the exact lengths.

    Do you want to add an underlay for $2.99/m2? In 90% of cases we recommend you do to protect your liner from rocks and sharp objects.

    What is the address of your dam?*

    Personal Information

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    Figure 1 (Dams)

    👆Calculating your liner size for a dam

    Dig the hole for your dam first. Then, like Figure 1, lay string or a tape measure down on the ground to get accurate measurements of the width and length. Be sure to measure the longest and widest sections of the excavation and include 0.5-1m of overhang on all sides. This overhang will be secured in place by a perimeter anchor trench.

    👇 Calculating your liner size for a pond

    To calculate the length and width of liner for a pond, follow the diagram below. It shows how to take overhang and the vertical runs into consideration.

    Figure 2 (Ponds)

    Example

    If you had a pond 1m deep, 4.7m long and 3.2m wide.