Aquascape Pond Underlay & Geotextiles
Protect liner from the ground and the rockwork
Underlay and geotextile separate the liner from the surfaces around it. Standard protective fleece lines the prepared excavation, while heavier rock pads provide additional protection in demanding positions. Choose by the layer’s job, dimensions and fabric specification rather than assuming all black pond fabric is interchangeable.
Does a heavier fabric make a waterproof pond?
No. These fabrics protect or separate layers. EPDM or another specified waterproof membrane is still needed to contain the water.
Start with a properly prepared base
Fabric is extra protection, not a remedy for rubble or unstable ground. Remove sharp objects and form a stable surface before laying underlay. Allow material to follow shelves and side slopes, and follow the specified overlap arrangement so soil is not exposed at the joints.
Add protection where loads are concentrated
A large rock, storage module or edging detail can place more concentrated load on the liner than the surrounding water. Use the appropriate protective detail at these points. Rock pads, ordinary fleece and lifting slings are different products; do not use one as another without its stated rating.
Should I order the same area as the pond surface?
No. Include the base, side slopes, shelves and overlaps. Additional protection above the liner may require more material than the layer beneath it.
