Garden and commercial landscape fabric.
Pond underlayment carpet.
Pond underlayment has only one job and that is to protect your pond liner.
A proper underlayment is considered a non woven geotextile that is a fancy term for saying it is a really tough material that is lightweight and easy to work with.
Liner and underlayment epdm pond liner is extremely flexible and will conform easily to whatever shape pond your desire.
Rock and boulder padding.
Water is easy to move and replace but beautiful fish and other aquatic creatures are often not cooperative.
Aquascape non woven geotextile underlayment is used to protect pond liner from rocks roots and other sharp objects that may damage the liner.
Since patching systems require a clean and dry surface on which to bond a puncture to the liner typically means draining the pond for a repair.
There are many different pond liners to choose from but you should know that 45 mil epdm is the standard for decorative fish ponds here in america.
A medium weight underlayment for soil separation and stabilization in paving and gravel applications.
Carpet is sometimes suggested as a pond liner underlay and you might get away with this just ensure that the carpet is a man made fibre such as polypropylene as a natural fabric such as wool will rot over time reducing it s effectiveness as a barrier and leaving the pond liner exposed to danger.
Heavy duty weed barrier.
45 mil pond liner is very strong and puncture resistant but it does have its limits.
Cattle crossing carpet and gravel or dirt access roads.
Pond underlayment provides additional protection for flexible rubber or plastic liners.