Pond liners are any type of liner that lines the bottom of a pond. Usually, they are used to line man-made ponds and not natural ponds, and not all pond liners are the same type, size or material. Here is some more information on the different types of pond liners and for which ponds they might work best.

HUGE Ponds and Concrete

If you create a huge man-made pond or drainage/collection pond, you may want to consider concrete as the liner. Preferably before you add the water or allow water to accumulate naturally, you will want to hire a concrete contractor to create a "cement pond." The concrete will line the bottom and come all the way up the sides of the pond to the banks. A universal thickness is chosen beforehand to make sure that the concrete can handle the amount of water it will eventually hold. The nice thing about this type of pond liner and huge ponds is that you can add touches like lighted water fountains in the middle of it.

Medium-Sized Ponds and Acrylic Liners

Medium-sized ponds lend themselves well to acrylic liners. Acrylic liners are just like tub liners; the contractor takes measurements of the shape and size of your pond, then orders a manufactured liner to fit the hole in the ground. A base of large gravel fills the bottom of the pond to create a resting surface for the acrylic liner. The gravel also fills any small spaces between the liner and the dirt sides of the pond. Usually these liners come with a little lipped edge with pre-drilled holes to hide the gravel base and help secure the liner to the banks of the pond.

Tiny to Small Ponds and Rubber Liners

Finally, your little hobby pond in the back yard that is no bigger than a bistro tabletop can be lined with rubber pond liners. These little ponds are ideal for the rubber liners because the rubber liners come in rolls that you cut to fit the pond's size and space. They can be used alone or with an acrylic liner. When used by itself, the rubber liner is waterproof and does not allow any pond water to sink into the ground and be absorbed the surrounding soil. It also prevents worms and other earth and water bugs from traversing into your pond, which can then infect your Koi fish or anything else you keep and/or grow there.

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