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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Why isn't EPDM a good liner for ponds?
EPDM is fish safe, but is especially vulnerable to punctures and tears that are common in the installation process.
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What are the key properties of HDPE?
HDPE is one of the most affordabe options when it comes to durable, chemical resistant pond liners.
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is HDPE plastic biodegradable?
No, HDPE is built to last, and can withstand hundred years of biodegradation without fully degrading.
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is HDPE recyclable?
Since HDPE is made up of a singular polymer, it is much easier to recycle than a multiple polymer plastic.
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Is HDPE plastic good
HDPE is a singular polymer plastic, meaning that it's lower cost than EPDM, and easier to recycle.
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why is HDPE a suitable plastic
HDPE is incredibly durable and resistant to tears; its seams are heat welded, making it one of the most effectively and permanently sealed liners available.
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is HDPE harmful
HDPE is toxin-free, and won't leak out chemicals like some of it's relatives, this makes it safe for food and water meant for human consumption.
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Is HDPE a rubber?
HDPE is a kind of polymer developed from petroleum. this is considered a thermoplastic.
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Are EPDM liners any good?
EPDM is made out of a multiple polymer combination that lends to it's high durability, and it's increased weight.
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what is the strongest pond liner?
HDPE is the heaviest form of pond liner, and also the most chemical and damage resistant.
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What type of polymer is HDPE?
HDPE stands for High Density Polyethylene, a highly durable polymer that is made from petroleum.
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What is the use of HDPE liner in landfill?
HDPE is chemically resistant, able to withstand the highly corrosive liquid found within leachate.
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What's the difference between HDPE and EPDM?
HDPE can be used with living creatures, as it's completely BPA free and resistant to chemical leaching.
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What is EPDM best used for?
EPDM is fish safe, and less vulnerable to UV exposure than other materials found in most pond liners.
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Should I use PVC or HDPE?
PVC is lower cost, and easier to install, however it is also very vulnerable to UV exposure, and damage during installation.
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What is HDPE best for?
HDPE is ideal for containing highly concentrated chemicals, and protecting against exterior damage.
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What is PVC best for?
PVC is affordable, and comparitively easy to install, however it may be more susceptible to damage during maintanence or installation.
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What's a PVC liner?
PVC stands for polyvinyl chloride, these are lightweight, relatively flexible, and sealed together with specialty tape.
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What's an EPDM liner?
Ethylene propylene diene monomer are highly flexible and incredibly durable liners, especially resistant to punctures.
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What's an HDPE liner?
HDPE is a highly durable and lightweight polyethylene material, whose seams are permanently heat welded.
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How do I add thermal energy to my greenhouse?
Thermal energy, or heat, can be stored in a greenhouse by adding "thermal batteries," like barrels of water or a heat sink.
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Where is geothermal energy created?
Geothermal energy is heat from within the Earth that has been present since the original formation of the planet. It is contained in the rocks and fluids beneath the earth's crust, distributed through layers of magma several thousand miles thick.
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How do you store heat in a greenhouse?
Thermal energy, or heat, can be stored in a greenhouse by adding "thermal batteries," like barrels of water or a heat sink.
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Does a geothermal greenhouse need electricity?
Geothermal energy is readily available virtually everywhere on the planet. It's a "direct use" energy, in that heat from below the surface can be transferred to heat homes, businesses, pools and spas without the need to convert it to electricity.
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How far deep into the ground does a geothermal well go?
A geothermal well will vary in depth depending on the ambient temperature of your location, ranging anywhere from 6 to over 200 feet. It needs to be deep enough to avoid freezing at the surface, while accounting for cost in the installation process.
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