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PVC
PVC
is the most commonly specified liner in the industry. It is a highly
flexible, non-reinforced, cost-effective, waterproofing geomembrane
liner with many uses and advantages for the user.
Since
PVC is degraded by light it requires being covered with a minimum
of 12" (1 foot) of clean fill to function as designed. In buried
applications, PVC can provide a service life of over 20 years. Slopes
should be limited to 3:1, and cover soils should be walked in from
the bottom of the pond to the top, always keeping a minimum of 12"
of clean soil between your equipment and the membrane.
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HDPE
HDPE
is the most widely used geomembrane in the world. It has excellent
chemical resistance, good UV stability and is used more commonly
internationally due to its availablility and cost. HDPE is another
UV-stable product.
HDPE
cannot be prefabricated and is a very technical product to install
properly due to its lack of flexibility and the technical nature
of field work seaming. (There is a great deal more field welding
due to the lack of factory fabrication.)
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EPDM
EPDM is used where there is a need for an exposed membrane. This
product is warranted for 20 years and is gaining popularity in the
custom waterfall and ornamental pond market due to its high degree
of flexibility.
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RPP
RPP
is a reinforced product that can be fabricated into large panels
of 15,000-20,000 sq. ft. It is UV stable and therefore requires
no soil cover. It can be manufactured in various colors and is easily
heat welded in the field for good quality field seams.
RPP
is becoming increasingly popular in the golf construction market.
It is used primarily on lakes where there is limited cover material
or the slope design is too steep to hold a cover soil.
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