Fish Pond Liner Waterproof Membrane – Garden Pools & Fountains

Create a Leak-Free Pond, Stream or Water Feature with Ease

The Fish Pond Liner Impermeable Geomembrane is your go-to solution for building beautiful, watertight garden ponds, fish pools, water storage tanks, backyard streams, and decorative fountains. Made from thickened plant-fiber reinforced material at 0.2mm thickness, this flexible black membrane forms a tight, reliable barrier that stops water seepage and protects against soil erosion — keeping your aquatic environment stable season after season.

Made in Mainland China.

Why You'll Love This Pond Liner

• Truly Waterproof: Creates a fully impermeable layer to prevent water loss in ponds, pools, fountains, and roof gardens.
• Tear & Puncture Resistant: Thickened construction resists sharp stones, roots, and plant pressure — built to last.
• Flexible & Easy to Install: Simply spread flat, trim to size, and secure edges with soil, rocks, or weights. No special tools needed.
• Versatile Use Cases: Perfect for fish ponds, decorative water features, garden pools, water storage tanks, slope reinforcement, and roof waterproofing.
• Discreet Black Finish: The neutral black colour blends seamlessly into natural garden environments, making your water feature look clean and professional.
• Lightweight & Compact: Easy to transport, cut, and fold for DIY landscaping projects of any size.

Product Specifications

• Material: Plant Fiber Reinforced Geomembrane
• Thickness: 0.2mm
• Size: 1.2 × 2.1m
• Colour: Black
• Item Type: Impermeable Geomembrane / Pond Liner
• Quantity: 1 PC
• Origin: Mainland China

Ideal Applications

• Garden fish ponds and koi ponds
• Decorative streams and waterfalls
• Backyard fountains and water features
• Rainwater collection and storage tanks
• Rooftop and balcony waterproofing
• Slope stabilisation and erosion control
• Small-scale aquaculture and breeding ponds

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For guidance on building a healthy backyard pond ecosystem, visit the U.S. EPA WaterSense Outdoor Water Use resource.

Learn more: Groundcover

Frequently Asked Questions

Q: What size is this fish pond liner and what area will it cover?

A: This pond liner measures 1.2m × 2.1m with a 0.2mm thickness. It is well-suited for small to medium garden ponds, decorative water features, streams, and fountains. For larger ponds, multiple liners can be overlapped and sealed.

Q: Is this pond liner safe for fish and aquatic plants?

A: Yes. The liner is made from plant-fiber reinforced geomembrane material with no high-concern chemicals, making it suitable for use in fish ponds and aquatic garden environments when properly installed.

Q: How do I install this waterproof membrane?

A: Installation is simple — excavate your pond area, remove any sharp debris, lay the liner flat across the surface, and press it gently into the contours. Secure the edges with soil, flat stones, bricks, or heavy weights to hold it in place, then fill with water.

Q: Can this liner be used for roof waterproofing or slope reinforcement?

A: Absolutely. Beyond garden ponds, this impermeable geomembrane is widely used for rooftop waterproofing, slope stabilisation, and erosion control on construction sites and home gardens alike.