Pond Liner Underlayment 20' x 20'

Pond Liner Underlayment is highly recommended for all pond liners. It's like having an inexpensive insurance policy on your pond liner.

Adds extra protection against stones, roots and other sharp objects. Pond underlayment is quick and easy to install. Helps pond liners from overstretching and is non-biodegradable. Prolong the life of your pond liner by using underliner.