Choosing the right pond liner

Choosing a pond liner is more than just finding the right size. The type of pond liner you choose should be based on the ground type and, of course, your budget. Knowing the types of pond liner available, and why quality matters, can help you find one that will serve you well.

Why is a pond liner necessary?

A pond liner is the difference between a well-constructed pond and a hole in the ground. It forms a watertight barrier, allowing your pond to stay full. They also keep weeds from the ground growing into your pond.

Pond liners also give you flexibility. As sheets of waterproof material, they offer the ability to fit any shape or size, unlike some of the rigid ponds on the market.

Types of pond liner

Among the flexible sheeting pond liners, there are still multiple options. Different materials can suit different pond types, as well as different ground types.

Standard PVC pond liners are 0.5 mm thick and are a good basic lining material. This plastic is rot proof and can resist punctures. While it is flexible, it doesn’t offer a lot of stretch, and if left exposed to sunlight it can turn brittle over time. Still, it is a great choice for small ponds and uncomplicated installations.

EPDM liners are a type of rubber, and at 0.75 mm thick it is more robust than PVC. The added flexibility and resistance to puncture and damage can make it a great choice if you’re planning a more elaborate pond design. It is also a great choice if your ground is quite rocky and you might have more risk of puncture.

The thickest liners are the 1 mm Firestone. This liner type also offers the best levels of flexibility and durability. This, in turn, means it is the best choice for difficult installations, as it can withstand more and should last longer.

Price matters

Of course, the liner you choose will also depend on your budget. Although PVC is inexpensive, it is often worth the investment to upgrade to EPDM or Firestone. These have a higher price, but can also have a longer lifespan, giving you a better value for money.

Another way to improve the lifespan of any pond liner is to use an underlay. While this may be an added expense, it can extend the life and quality of your pond. As with any part of your pond installation, you really do get what you pay for!


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