Pond Liner for Ponds, Lakes and Retention Basins - 37.5 ft. x 35 ft. 20-Mil LLDPE

Half Off Ponds is a reliable, family-owned US-based company that specializes in the sale of pond supplies, equipment, and accessories. The company offers a wide range of products related to pond construction, maintenance, and landscaping, including pond kits, pond-free waterfall kits, water pumps, filtration systems, pond liners, water treatments, fish food, and various pond accessories.

The 20-Mil LLDPE Pond Liner from Half Off Ponds is an economical and extremely durable pond liner with high tear and puncture resistance, as well as high impact and tensile strength. Despite its durability, the liner is pliable and flexible, allowing it to conform to a variety of irregular surfaces. It attaches easily to waterfalls and skimmers, making it an excellent choice for residential projects like water gardens, fish ponds, and backyard waterfalls with gently sloping sides and smooth contours. The liner is also suitable for landscape contractors and water feature installers working on large commercial and municipal projects, such as business campus retention ponds, public works water features, and residential beautification installations.

The 20-Mil LLDPE Liner from Half Off Ponds resists stress cracking even when exposed to direct sunlight. When not exposed to sunlight and covered by earth, rock, or water, the liner has a life expectancy of 40 years or longer. In exposed installations, the liner comes with a 10-year manufacturer's warranty.

The 20-Mil LLDPE Liner is available in a range of sizes, from 6 ft. x 5 ft. to 62 ft. x 200 ft., providing options for a variety of pond and water feature projects. Half Off Ponds recommends using an underlayment, such as their UnderGuard Underlayment Nonwoven Geotextile, to provide an extra layer of protection between the liner and the soil, as well as to prevent air voids and reduce wear and abrasion.

The UnderGuard Underlayment is a needle-punched nonwoven polypropylene geotextile fabric with a random, three-dimensional pore structure and a uniform, felt-like consistency. This high-tensile-strength fabric enhances soil stability and controls erosion, making it an ideal choice for stabilizing soil and creating "rock pads" during pond liner installation.

To determine the correct size of pond liner needed, customers can use the formula: [(Pond Length') + (2 x Pond Depth') + (2') = Liner Length'] and [(Pond Width') + (2 x Pond Depth') + (2') = Liner Width']. For calculating the number of gallons in the pond, the formulas differ for square/rectangular and oval ponds. Half Off Ponds also recommends a minimum depth of 18 inches for fish ponds and 12 inches for water gardens, subject to local building codes and freeze line depth.

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