Gordon Low Pond Liner Underlay White Geotextile 150gsm

Gordon Low Pond Underlay White Geotextile Liner Protection

A reliable protective layer for long lasting pond liner performance

The Gordon Low pond liner underlay is a high quality 150gsm white geotextile liner protection layer designed to safeguard pond liners from punctures, ground movement, and long term wear. Suitable for use with EPDM rubber pond liners and PVC liners, this pond liner underlay creates a protective barrier between the liner and the ground, helping to prevent damage caused by sharp stones, roots, and debris.

Manufactured from non woven, needle punched polypropylene, this 150gsm pond liner underlay is engineered for durability in wet ground conditions. It is rot resistant, permeable, and designed to allow natural drainage while maintaining a strong protective layer beneath your liner. It provides a continuous protective layer over the prepared pond surface.

One of the key advantages of using pond liner underlay is its ability to reduce stress on the liner. As ponds fill and settle, pressure from water weight can cause liners to stretch into voids or uneven ground. This geotextile layer helps distribute that pressure evenly, reducing the risk of weak points forming over time.

This is Gordon Low’s 150gsm Pond Grade underlay. The rating means a material weight of 150 grams per square metre, not a thickness measurement. Gordon Low recommends its 250gsm Heavy Duty underlay beneath all its pond liners, so check the liner supplier’s guidance and ground conditions before choosing a grade. Compare puncture resistance and tensile strength as well as material weight.

In wildlife pond builds, the underlay can also be used above the liner in specific areas, such as shallow beach zones where gravel or stones are added. This provides additional protection while maintaining a natural look and finish.

Improve liner lifespan and reduce the risk of leaks

Pond underlay helps reduce mechanical damage and stress on the liner as the ground settles. It is permeable and does not replace the waterproof pond liner or guarantee against leaks. Clear sharp objects from the excavation and follow the liner supplier’s installation guidance.

Available Sizes

• 2m x 5m rolls
• 2m x 25m rolls

Installation Guidance

Install the pond underlay directly onto a prepared surface before placing your liner. Ensure the ground is cleared of sharp objects and debris. Overlap joints where required to maintain full coverage. For maximum protection, use underlay beneath the liner and consider additional layers in high risk areas such as corners or stone shelves.

---

Key Benefits

• Helps protect against punctures from stones, roots, and debris
• Pond Grade material with a weight of 150 grams per square metre
• Protects liners from ground movement and settling
• Suitable for EPDM and PVC pond liners
• Rot resistant and long lasting in wet conditions
• Allows natural drainage while maintaining protection
• Lightweight and easy to install
• Can be used beneath or above the liner where required

---

Reasons to Buy

• A protective layer between prepared ground and the pond liner
• 150gsm professional grade geotextile material
• Improves long term durability of your pond
• Reduces risk of leaks and costly repairs
• Suitable for both small ponds and larger garden projects
• Ideal for use with rubber pond liners and custom builds