Custom Pro HEAVY DUTY POND UNDERLAYMENT FOR LINER PROTECTION - 15x20 Feet / 300 Square Foot Lightweight Fabric Barrier Mat Protects EPDM, Plastic and PVC Liners from Holes, Tears and Animals

nice thick pad will prevent rock and root punctures of my pond liner, but not too difficult to cut.

Replaced my 10 year old liner with this epdm. I accidently ripped the old one and was going to repair it but decided to replace instead. I also was going to put this liner on top of the old one but decided to do a complete tear out, resculpturing the walls and reinstalling over a bed of topsoil and sand. Alot of work but very happy with the job. Also put rocks around edge for the flodded look. Excellent liner, very durable, and smells like rubber. Left over material has been trimmed and makes a great tarp. Ten years ago, pre-Amazon I had to drive 150 miles roundtrip to buy this in Pennsylvania.

Very good quality

The thickness and padding make this underlayment a must to protect the rubber liner from punctures. I converted an 3500 lbs cement pond with water fall and bird bathes into a pondless waterfall. The underlayment was able to cover seems between clay and remaining cement with only a thin layer of top soil to cover that seem. I feel very confident the pond liner is protected even with 2 tons of rock stacked on top f it.

Arrived on time in perfect shape.