Add underlayment to your liner to make it a combo and receive a lifetime warranty
Select Size below to see Price
Additional EPDM Liner Information
Limited Lifetime Warranty & 25 Year Warranty
Anjon Manufacturing warrants to the original purchaser that 45 mil LifeGuard EPDM Pond Liner™ will be free from defects in material and workmanship, and UV deterioration for — the lifetime of the product when installed with UnderGuard Geotextile Underlayment™, or for a period of 25 years if the liner is installed without UnderGuard Geotextile Underlayment™.
Certified Fish & Wildlife Safe
This liner has been tested and is certified fish and wildlife safe by Guardian Systems, Inc. Test results are published on manufacturer’s website.
Frequently Asked Questions
What size liner do I need?
The formula for sizing a pond liner is
POND LENGTH + (2 TIMES DEPTH) + 2' = LINER LENGTH
POND WIDTH + (2 TIMES DEPTH) + 2'= LINER WIDTH
A 12' long, 7' wide and 3' deep pond is...
12' + (2 * 3) +2' = 20' Long
7' + (2 * 3) + 2' = 15' Wide
How many gallons is my pond?
The formula for determining the number of gallons is:
FOR SQUARE AND RECTANGULAR PONDS
Length * Width * Depth * 7.5 = Gallons
FOR ROUND PONDS
RADIUS * RADIUS * 3.14 * 7.485 = Gallons
12 * 12 * 3.14 * 7.485 = 3,384 Gallons
Upgrade by adding Underlayment
The biggest contributors to pond liners failing are poor, unstable soil conditions and rips and tears from rocks and boulders. Shifting soil creates pockets and voids under your pond liner, forcing it to stretch under the weight of the water. Rocks and boulders placed on and around your water feature create aesthetically pleasing visual focal points. They can also penetrate, tear and harm your liner.
Underlayment adds an extra layer of protection between pond liner and rocky or unstable soils. It stabilizes soil to prevent air voids from forming between the liner and earth; reduces wear and abrasion from rocks and roots and extends the life of pond liner.
Liner Seam & Repair Kits
Seam Tape Semi-cured EPDM rubber, coated on both sides with a highly resistant and aggressive Butyl adhesive. Used to splice together two sheets of EPDM pond liner.
Flashing Tape Very flexible, uncured EPDM rubber, coated on one side with a resistant and aggressive Butyl adhesive. Stretches across wrinkles and around pipe penetrations. Use to cover (top-dress) EPDM pond liner seams.
Cured EPDM rubber, coated on one side with a resistant and aggressive Butyl adhesive. Used on flat, non-stretching surfaces.
Primer / Splice Wash A low VOC solvent used to prepare, clean and prime EPDM sheets prior to applying peel and stick tapes.
Self-leveling edge treatment used to ensure a leak-free, watertight seal when seaming together two sheets of EPDM pond liner.
Step by Step Support
Here at Half Off Ponds, we strive to make to work hard, so that it is easy for our customers to shop our store. We also provide tutorials and instructions for when you may need assistance. Repairing pond liner and running pipe through liner can be a little complicated, if you have never done it before. Check out our
tutorial page for more information.