 About Geotextile Underlay Protection
GEOTEXTILE liner protection fabric is a tough synthetic fabric typically used below garden pond liners to help protect the rubber from puncturing from rocks, roots and other soil debris.
Unlike sand bedding, carpet padding (never use old carpet!) and old newspapers commonly used for this purpose, GEOTEXTILE protection fabric also protects against puncture from objects above the liner by limiting how much the liner can stretch under pressure. When garden pond liners are covered with soil, gravel, rocks or concrete, fabric should be used both above and below.
Characteristics
What makes Polyfelt really special is the quality and the characteristics of its continuous fibres.They remain unaffected by extreme climatic influences such as frost, heat, or moisture. They are UV-resistant and have no by-products, which makes Polyfelt entirely environmentally compatible.
Polyfelt TS demonstrates high uniform strength in all directions, which means there are no inherently weak areas.
Its heat and sunlight ability makes it suitable for use under reservoir liners and flood barriers where levels fluctuate. | 
