Geotextile
Underlayment adds an extra layer of protection between pond liner and rocky or unstable soils. It stabilizes soil and prevents air voids from forming between the liner and earth; reduces wear and abrasion from rocks and roots and extends the life of pond liner.
Nonwoven geotextile fabrics are perfect for stabilizing soil, preventing rocks and roots from penetrating pond liner and for creating rock pads to cushion large rocks and boulders placed in the pond on top of the liner. Underlayment is EASY to install. Simply lay the pieces next to each other and install the pond liner. Use any extra underlayment to create pads for large rocks and boulders placed inside your pond.
Available in 5.5' width