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Pond Liners

Where preformed ponds come already sized and shaped, it's different with liners as they come as a sheet of material, available in rolls of all different sizes so you are able to create any size or shape pond you can imagine.

Liners can also be the cheapest option and are very popular when creating a ground level pond for more of an informal look.

Most above ground ponds that seem to be made of brick, blocks or concrete are also lined with liners as they are so flexible and give you instant waterproofing.

If you are on a budget and decide to make your pond smaller so you can afford a more expensive liner is a bad idea. The bigger the pond the better, so just insure that the cheaper liner is covered by soil, rocks, pebbles or paving slabs to help protect it against winter frost and ultraviolet light.

View pond liners to buy at great prices

There are 4 types of pond liner.


This was the originally pond liner and comes available in different thicknesses, but I would only ever use the thickest one available. It is also the cheapest of all liners, so if you are on a budget it may be a great place to start.

The trouble with polythene is that it is not easy to work with and is very easy to tear. Once this material is broken then it can not be repaired and comes with no guarantee.

Will last about 3 to 5 years.

Low-Density Polythene

The same as above but has been improved in all areas. Such as easier to work with, difficult to tear and when broken can be repaired.

They do come in different strengths and are cheaper than PVC and BUTYL liners.

Can not join pieces together but will last about 15 to 25 years.


PVC comes in different thicknesses, so the thicker you get the better but the more expensive it becomes too.

You can join pieces together with special glue and can be repaired if broken.

This is the most common and most popular liner used today.

Will last 15-20 years.


EPDM is cheaper than butyl but more expensive than PVC, it is tougher and harder to tear than both and is guaranteed for life


The daddy of all liners, easy to use, extra flexible, extra strong, easily repaired, UV light resistant and can last up to 50 years.

The only and single disadvantage is that it is very expensive.

When using any liner I suggest you invest in underlay, it will help protect your liner. If you want to save money in this area then I suggest you use sand, old carpets or insulating felt.

How much liner will you need?

Measure the maximum length, width and depth.

Times the maximum depth by 2 and add to the maximum length.

This total will give you the length of liner you will need.

Times the maximum depth by 2 and add to the maximum width.

This total will give you the width of liner you will need.

You now have the length and width of pond liner you need to fit your pond. You now need to add more on for the overlap on the sides of you pond. I would add, to be on the safe side, an extra 50 cm to both the total length and width.

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