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Garden Pond Liners
Pond lines are flexible materials that can be used as flooring for garden ponds to prevent the water from escaping into the soil. A range of cheap pond liners for ponds are available in the market today some of which use PVC materials and others that make use of EPDM (Ethylene Propylene Diene Monomer). In addition to widely used PVC and EPDM materials you can also find fish pond liners that use materials that are a blend of two of more polymers like the UltraGaurd pond liner.
Flexible and Preformed Liners
Preformed pond liners as the name indicates are liners that have been set into a specific shape previously. These types of liners are generally small and won't be able to hold more than a few gallons of water. A flexible liner on the other hand can be cut and designed as per requirements and can be used to build a pond with huge dimensions. Discussed below are both options.
Flexible Pond Liners:
Flexible liners as the name suggests are polyethelene pond liners that can be cut as per requirement to build a pond of any proportion and shape. A range of flexible liners are available in the market today that includes PVC liners, EPDM liners, Permalon liners, Ultragaurd liners and the like.
Compared to other types, PVC liners are by far the best and are the most flexible. In addition they are cost effective and highly durable making them suitable for most gardens. In case your area experiences extreme winter temperatures you can decide to go for EPDM pond liners which are as good as PVC liners but are more durable. Depending upon your need and budget, you can also go for other types of liners for your pond. The best garden pond liners have a thickness of at-least 500 microns. The following table provides information on various rubber pond liners available in the market along with their flexibility and durability range.
Table Showing Features of Different Pond Liners
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| Liner
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Flexibility
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Heat Resistance
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Pond Dimentions
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| PVC Liners
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most flexible
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-22° Fahrenheit
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any size pond
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| EPDM Liners
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very flexible
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-40° Fahrenheit
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any size pond
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| Permalon Liners
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very flexible
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-70° Fahrenheit
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any size pond
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| JPL20 and JPL30
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least flexible
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-100° Fahrenheit
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35'x35' and above
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| Ultraguard
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very flexible
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-65° Fahrenheit
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any size pond
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Size of flexible Pond Liner
In order to identify the size of the pond liner that you should buy, you must first measure the length, depth and width of your pond (which in this case is the excavated area). After this is done, the length of the pond liner can be decided using the following formulae:
Length of liner = Maximum Pond Length + (2 x Depth of the Pool) + 2m excess.
Width of liner = Maximum Pond Width + (2 x Depth of the Pool) + 2m excess.
As an alternative you can also make use of some online pond liner size calculators like the one offered by this site. Another equally good pond calculator is offered by geochemic.com
Preformed Pond Liners:
Preformed pond liners or pre-cut liners are pond liners that have been cut previously into specified shapes and are ready for usage. They are available in a range of sizes and are best for novice pond designers. You can also go for custom cut pond liners that most services offer today. The only drawback of preformed liners is the fact that they cannot be used to construct ponds that can hold huge gallons of water.
If you are using preformed pond liners then it would be best if the digging is done after purchasing the liner.
Related Reads
Using Concrete For Pond Construction
Preformed Garden Ponds
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