20 Mil LLDPE Pond Liner 10 x 13 ft Flexible Koi Pond Underlayment for Water Gardens

Create a beautiful water feature with a dependable foundation designed to last. This pond liner provides a protective barrier that helps retain water while creating a cleaner environment for fish and aquatic plants. Made from flexible 20 mil LLDPE liner material, its 10 x 13 ft sheet resists punctures, tears, root intrusion, and UV exposure while conforming easily to irregular pond shapes. The black finish blends naturally beneath water, rocks, and plants for a polished outdoor look. Ideal for homeowners, pond enthusiasts, and DIY landscapers creating koi ponds, fountains, waterfalls, and water gardens.

Key Features

• Koi pond liner measures 10 x 13 ft, providing approximately 130 sq ft of continuous coverage for smaller backyard water features.
• Flexible LLDPE construction bends and folds around curves, rocks, ledges, and uneven pond contours and can be trimmed for a customized fit.
• 20 mil material offers resistance to punctures, tearing, roots, and outdoor UV exposure for dependable pond protection.
• Smooth black lining helps reduce soil buildup while creating a natural-looking base beneath water and landscaping.

Why Choose Our 20 Mil LLDPE Pond Liner 10 x 13 ft

Unlike rigid preformed pond shells that limit your layout, this flexible pond liner adapts to custom shapes and contours, giving you more freedom when designing your water feature. Its durable 20 mil LLDPE construction combines flexibility with outdoor resistance, making installation and long-term maintenance more convenient.

Perfect For

Excellent for backyard fish and koi ponds, water gardens, fountains, waterfall bases, streams, decorative landscaping features, planting beds, and DIY self-watering projects. It suits homeowners, gardeners, landscapers, and pond enthusiasts looking for customizable water containment.

Build Your Pond with Confidence

Turn your outdoor vision into a welcoming water feature with a liner made for flexible installation and lasting protection. Order your 20 Mil LLDPE Pond Liner today and create the pond, fountain, or water garden you've been planning.