Flexible pond liner and underlayment..

Different types of pond liners.

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Flexible pond liners and underlayment

 

 

Different type of pond liners

 

A liner is required to make your water feature watertight. Options include flexible or performed pond liners, or a base of concrete or clay. You’ll find preformed liners made of fiberglass or plastic in a variety of shapes and sizes. Compare the types of liners and imagine yourself installing them. Consider using an addition sub liner or underlayment as a protective layer between the liner and the soil. Many kinds of flexible and preformed pond liners as well as underlayment are readily available from aquatic garden suppliers, building supply stores, and enter net sources. The overwhelming favorite choice of material for a water feature, flexible liners offer unrivaled potential for design creativity, simple installation, reasonable cost, dependable longevity, easy repair, and low maintenance.

Whatever shape you design and excavate for a water feature, a flexible liner conforms to it. A compact shape makes installation easier and less expensive. A complex design with lots of thin fingers wastes liner material. Increases the amount of tucking and folding of the liner, making installation more difficult.

Installing a flexible pond liner calls for a protective underlayment, typically a layer of geotextile material or carpet which goes in the pond excavation before installing the flexible liner or preformed unit. It serves as a barrier to prevent stones or other objects in the ground from damaging the liner or shell.

 

 

 

 

Comparing Pond liners

 

Flexible pond liners survive easily in most climates. After years of exposure to UV light from the sun and extremely cold weather, however they become brittle and then crack and leak. Polyethylene and polyvinyl chloride PVC liners are more prone to brittleness than pond liners made of ethylene propylene diene. Monomer. Butyl rubber, and PVC-E. Other threats to flexible pond liners are sharp or pointed objects, which can cause punctures. The toughest flexible pond liner, Xavan, resists punctures and tears.  In areas where earth tremors occur, flexible pond liners don’t crack as do preformed liners or concrete. If a leak occurs in a flexible pond liner, it’s relatively easy to repair.

To make a flexible pond liner last longer, design a water feature to prevent the liner’s exposure to UV light. Water along won’t do the job. What’s more, UV rays penetrate clear water. Cover any exposed liner edge with soil, rocks, or pants to protect it and to give your water feature a finished look. Edging should adequately shield any pond liner showing above the water surface.

 

 

 

 

Polyethylene pond liners

 

This lightweight, inexpensive option typically lasts only one season. Polyethylene readily takes its intended shape, but it lacks the sturdiness required of a pond liner. You can use it to line a container garden that leaks.

 

PVC and PVC-E pond liners

 

PVC and PVC-E pond liners generally last beyond their 10 to 12 year guarantee. Use the standard 20-mil thickness for water features. Both types cost about the same, they’re the least expensive liners that last 10 years or more. They cost about 25 percent less than rubber, yet resist tears and punctures better than rubber PVC-E is more supple, making it easier to install.

 

EPDM and rubber pond liners

 

EPDM and butyl rubber pond liners often last beyond their typical guarantee of 20 years. Their 45-mil thickness, the industry standard makes them heavier than PVC but more flexible than PVC. Make certain that the pond liner is fish safe, check the package label or ask the dealer. Similar liners made for swimming pools for instance are impregnated with anti- algae material which is toxic to fish.

 

 

 

 

Xavan pond liners

 

Xavan, a nonwoven polypropylene material that is spun and heated-bonded for added durability, resists tears and puncturing. Xavan cost more but lasts longer than other materials because it is more resistant to ultraviolet light. At 22 mil it weighs one third less than a standard rubber liners, making it easier to lift and adjust during installation.

The black color of flexible liners sometimes confuses first time pond builders. Once the pond liner is installed, however viewers see the water, plants, and fish not the black liner. It makes the water mirror like reflecting sky, trees, and near by shrubbery.

 

Underlayment

 

The underlayment, an additional cloth like layer between the soil and the liner, protects the liner from exterior damage. Use it to cover both the bottom and outside walls of the area excavated for your water feature. The heavy weight of water pushing the liner against rock, stones or other sharp edged object might cause leaks. Underlayment reduces this possibility. Before installing the underlayment, place 1 to 2 inches layer of sand on the bottom where your pond liner goes. This helps give the bottom of the pond a smooth finish.

 

Preformed pond liners

 

Rigid, preformed pond liners for pools, streams, and waterfalls offer the easier and faster means of constructing a water feature. When properly installed they will be leak free. Rigid pond liners are also puncture resistant and easy to clean. The best preformed units are made of ¼ inch fiberglass and last 50 years or more. Although rigid, these pond liners flex enough to prevent cracking when their contents freeze during winter. Their sloping sides cause ice to lift slightly as it forms and expands.

Preformed liners for ponds, streams, or waterfalls come in a variety of shapes, sizes, and colors. Preformed units suit small and formal designs, especially in natural or geometric shapes. You’ll find units as large as 12 feet wide, 20 feet long, and 2 feet deep. Blending rigid forms into the landscape takes extra care because the edges can be more difficult to disguise than those of flexible pond liners. But with skilled placement of plants, along with native rock, brick and wood edging you can achieve the desire results.

 

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