Knowledgebase
Welcome to the BTL Knowledgebase. Ever since we started lining ponds, creating covers, and helping people with their projects, we've gotten asked a lot of questions. Many of these questions are repeatedly asked, so we put together the BTL knowledgebase to help answer any questions you had about a particular subject. We are adding new questions every month, so continue to check back often!
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How long do geomembranes last?
Properly installed geomembranes can last an extremely long time, an HDPE geomembrane can last over 4 centuries if maintained properly.
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What's the difference between a geomembrane and a geotextile?
Geotextiles are typically porous, used in filtering or draining applications, while geomembranes are meant to halt the flow of liquid or gasses, and don't allow the fluid to pass through.
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Which geomembrane should I use?
Different kinds of geomembranes are best suited for different applications; a highly chemical and abrasive environment will need a heavier and more durable geomembrane, like BTL's ArmorPro.
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Do geomembranes need a ballast?
Not all geomembrane applications require a ballast, however it may assist in stabilizing and anchoring the material.
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How do you install a geomembrane?
Some heavier geomembranes will require professional equipment in order to properly install the liner.
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Should you bury a geomembrane?
Geomembranes may function best under a ballast of soil, but this is not necessary, due to their high UV resistance and durability.
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Are geomembranes UV resistant?
BTL's AquaArmor and Armor pro are made out of entirely UV resistant materials, and can withstand extended exposure to sunlight.
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How thick should a geomembrane be?
Different thicknesses of geomembrane can be used in different applications, with 60 mils defining the industry standard.
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Are geomembranes fish safe?
BTL's geomembranes are made with chemical and leach-resistant materials, making them completely safe for fish and various kinds of aquatic life.
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How do you weld a geomembrane?
Geomembrane sheets are connected and their seams are sealed through a heat-welding process, which permanently seals the material.
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How much does a geomembrane liner cost?
BTL offers some of the most affordable and high value geomembrane liners available on the market.
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What is a geomembrane sheet?
Geomembrane sheets are created using a synthetic blend of highly durable polymers, spread thin and layered in order to maximize their strength.
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How thick is a geomembrane?
Geomembranes can range in thickness depending on their use-case; however, 60 mils is the industry standard, and most commonly found dimension.
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Are geomembranes impermeable?
Geomembranes are made of a synthetic, impermeable blend of polymers, often used to control and block water or fluid flow.
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What's a geotextile?
Geotextiles are multipurpose fabrics that are used to separate, filter, or drain -- typically geotextiles are permeable, and allow water to pass through.
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What are geomembranes used for?
Geomembranes are a flexible, impermeable synthetic material with a wide array of applications throughout different industries.
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Is EPDM toxic?
EPDM is leach resistant and toxin-free, making it safe for humans and fish alike.
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is HDPE toxic?
HDPE is BPA free, and certified by the FDA and NSF to be safe for use with products or materials that are exposed to humans.
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How safe is HDPE plastic?
HDPE is widely considered a very safe form of plastic, with low risks of leaching or off-gassing.
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Does EPDM offgas?
EPDM is especially resistant to all kinds of degradation, including heat, moisture, and elemental exposure.
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Does PVC offgas?
PVC is often made more flexible and durable through the use of plasticizers, which can evaporate or leach out of PVC.
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Is EPDM UV resistant?
EPDM is more resistant to UV degradation than other liners, but it will still eventually succumb to brittleness with enough time.
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