Pond liner leaks can be caused by several factors, often resulting from environmental stress or improper installation. One common cause is physical damage from sharp objects, such as rocks or tree roots, that can puncture or tear the liner. UV exposure over time can degrade the material, leading to cracks and leaks, particularly in older liners that lack UV resistance. Damage from external factors, like fallen tree limbs, a slip of a tool during cleaning, or even wildlife can also be a factor.
In some climates, extreme temperature fluctuations can also contribute to the deterioration of the liner, causing it to become brittle or lose its elasticity. Improper installation, such as not carefully preparing the base, can increase the risk of leaks due to abrasive contact with stones and protruding roots. Water pressure can exacerbate leaks, especially if the pond is not filled evenly or if the ground shifts due to nearby construction or seismic activity. In some cases, leaks can occur at seams that were not sealed properly.
