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15' Wide Pond Liner Underlay

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Pond underlayment keeps your pond liner protected by providing a buffer between sharp objects in the ground and your liner. The ground is also stabilized by the pond liner underlayment, which prevents your pond liner from over-stretching. 

Pond liner underlay is easy and quick to install and is made to resist pond settling, shifting and decomposition. Browse the variety of sizes we offer to find the underlay that will perfectly match your needs.