The best type of pond liner is typically EPDM (Ethylene Propylene Diene Monomer) rubber liner. It is highly durable, flexible, and resistant to UV rays and extreme temperatures. EPDM is preferred for most ponds due to its long lifespan and ability to conform to irregular shapes.
You should put a protective underlayment beneath your pond liner to prevent punctures from rocks, roots, or sharp objects. This underlayment can be a commercial fabric specifically designed for pond liners, or you can use materials like old carpet, sand, or even newspaper layers as a budget-friendly alternative.
A 45-mil (1.14 mm) thickness is generally considered the best for most ponds. It offers a good balance between durability and flexibility, making it suitable for a wide range of pond sizes and shapes. Thicker liners like 60 mil are available for larger or more demanding projects.
The life expectancy of a pond liner depends on the material. An EPDM liner can last 20 to 30 years or more with proper installation and maintenance. Other materials like PVC may have a shorter lifespan, often around 10 to 15 years.
Pond liners typically do not have a functional difference between the shiny and dull sides. However, for aesthetic reasons or to ensure better adhesion with certain materials, it’s common to place the shiny side down. Always check the manufacturer's guidelines.
A 45 Mil EPDM pond liner can last 20 to 30 years or more, depending on environmental factors, installation quality, and maintenance practices.
If water gets under a pond liner, it can create bubbles or floating sections of the liner, disrupting the pond's appearance and potentially damaging the liner. This situation can be addressed by ensuring proper drainage beneath the liner and possibly adding an underdrain to allow trapped water to escape.
Yes, a pond liner is essential for most ponds to hold water and prevent it from seeping into the ground. It creates a waterproof barrier that helps maintain the pond's water level. However, natural ponds with a clay bottom may not require a liner, though they are less common.