Duraliner 20' x 20' Boxed 45 mil EPDM Pond Liner
Best durable liner for long-lasting backyard pond and waterfall projects.
Create a stunning water feature with the Duraliner 15' x 25' Boxed Liner. Crafted from robust 45 mil EPDM rubber, this liner is built to last, offering exceptional resistance to weather, UV rays, and punctures. Its flexibility across a wide temperature range ensures easy installation, while the fish-safe material provides a secure environment for aquatic life. Backed by a 20-year limited warranty, this liner is ideal for creating beautiful and durable ponds and waterfalls.
$356.25
Owner Satisfaction
4.7
/ 5
Category Rank
4
/ 2530
#4 in Fountain & Pond Accessories
Price vs Category Average
-26%
Below average
Material
45
/ mil EPDM rubber
Who it's for
- Homeowners seeking a long-term, low-maintenance pond solution
- DIY enthusiasts building complex, fish-friendly water features
- Pond builders needing reliable protection against sharp terrain
Who should skip it
- Solo installers working without extra help
- Budget-conscious gardeners looking for the cheapest material option
- Users wanting simple, off-the-shelf repair supplies
Performance breakdown
Material Durability
Heavy-duty 45 mil EPDM rubber stands up to years of wear.
Installation Flexibility
High elasticity makes shaping the liner around complex pond contours simple.
Environmental Resistance
Engineered to withstand harsh UV exposure and extreme temperature fluctuations.
Aquatic Safety
Non-toxic composition ensures a healthy, secure habitat for fish and plants.
Puncture Resilience
Robust construction effectively prevents leaks from sharp rocks or debris.
Longevity Assurance
The 20-year warranty provides significant peace of mind for permanent installations.
Key Specs
Material
45 mil EPDM rubber
Dimensions
15' x 25'
Thickness
45 mil
Operating Temperature Range
-40° to 175°F
Weather and UV resistant
Puncture resistant
Warranty
20 year limited warranty
Manufacturer Country
United States
Features
- Durable 45 mil EPDM rubber construction
- Resists cracking from weather and UV
- Flexible in extreme temperatures
- Easy to shape and install
- Excellent puncture resistance
- Safe for fish and aquatic life
- Long-lasting performance
- Backed by a 20-year warranty
What customers say
Customers consistently highlight the Duraliner's superior quality and lasting reliability. The robust 45 mil EPDM material is praised for its durability and ease of installation. Users find the liner unfolds and conforms smoothly to various pond shapes, reducing wrinkles and potential issues. This product provides confidence with a watertight seal that withstands environmental stress, establishing it as a dependable choice for water features. Its long term performance and straightforward setup make it a valued investment for pond owners seeking a secure and durable foundation.
Know before you buy
Yes, the 45 mil EPDM material is non-toxic and specifically formulated to be safe for fish, plants, and other aquatic life.
The EPDM rubber remains flexible in temperatures as low as -40°F. This high elasticity prevents the liner from cracking or becoming brittle during winter freeze-thaw cycles.
While this liner is highly puncture-resistant, we strongly recommend using a geotextile underlayment. It provides an extra layer of protection against sharp rocks, roots, and shifting soil beneath the liner.
To ensure full coverage, measure the maximum length and width of your pond and add twice the depth plus an extra two feet of overlap on all sides for anchoring. This ensures you have enough material to secure the edges properly.
Absolutely. The flexibility of the 45 mil EPDM makes it ideal for conforming to the irregular shapes and tiered levels often found in waterfall construction.
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