Using a high-quality Pond Underlay cushions the liner and helps to distribute the weight of the water evenly across the pond floor. This significantly reduces the risk of punctures and stress-related leaks, ensuring your aquatic environment remains watertight for decades. Unlike sand alone, which can wash away or shift, geotextile underlay provides a permanent and stable layer of protection for EPDM, Butyl, and PVC liners alike.

Product Specifications

• Material: High-density, non-woven geotextile (Polypropylene/Polyester fibres).
• Weight Grades: Available in various thicknesses, typically ranging from 200gsm to 300gsm.
• Puncture Resistance: Engineered for high mechanical strength and tear resistance.
• Durability: Rot-proof, UV-resistant, and chemically inert for long-term submersion.
• Safety: 100% fish and plant safe; non-leaching material.

Investing in the correct grade of Protective Underlay is vital for the longevity of your installation. For a project with a surface area of 10m², we recommend ensuring you have enough material to allow for overlapping at the seams and a secure perimeter anchor. At J H Aquatics, we supply the robust materials required to give your pond the best possible foundation.