The most expensive item in any pond is often the pond liner, so it makes sense to check with several sources and make sure you are picking the right one. The factors involved when choosing a pond liner will be the size of the pond, the material the liner is constructed from, and the thickness.
Your first task when obtaining a pond liner will be to calculate the correct dimensions. To determine the size of the liner, it is necessary to measure both the length and width of your pond, as well as double the maximum depth. Also throw in an additional foot or two of extra material all the way around the pond. It is usually preferable to purchase a pond liner which is too big than to get one that is too little.
Several materials (plastic and fiberglass) are used to construct the liners and each one is offered in a choice of thicknesses (the thickness is calculated in mils, customarily abbreviated ml, where 1/000 of an inch equals 1 ml). If you are building smaller ponds, especially when they are free form, a 30 ml liner would be a safe choice. In case your pond is larger you will need to think about a more enduring pond liner, manufactured using 40 ml or 45 ml rubber, which should give years of dependable service.
There are several diverse materials used to create pond liners. Probably the best material is an industrial grade rubber compound called EPDM (Ethylene-Propylene-Diene Monomer). This product comes in a variety of sizes and works well in just about any kind of pond. The major drawback of EPDM will be its high cost, however many homeowners think the material is so simple to install and so sturdy that it is worth the additional money.
A second type of plastic that is regularly utilized for pond liners is HDPE (High Density Polyethylene) and can be a nice alternative for people installing a new pond on a budget. This is a synthetic plastic liner which is moderately sturdy and sold in 20 – 40 ml thicknesses. HDPE is cheaper than the rubber pond liner and usually stretchy enough to form effectively into tight areas.
PVC is another product that can be utilized, however it has disadvantages once the purpose includes supporting a large weight. Pond liners made from PVC are usually not as long-lasting as either EPDM or HDPE liners, however they are usually less expensive. If you want to build a more solid pond, you may acquire a factory liner in either fiberglass or hard plastic. These can be manufactured of fish-friendly vinyl or fiberglass and are available in different sizes, designs, and capacities.
Whichever brand of pond liner material you pick, make sure that it is made utilizing UV protection. Using this preserves the liner from damaging UV rays that could cause it to crumble in a relatively short time. Pond liner stability and maintenance rely on the type of material selected, and that will determine what chemicals will be used to maintain the pond in peak condition.