Whats the best pond liner to use
Andrew White
Published Mar 17, 2026
High-density polyethylene (HDPE) liners, also known as reinforced polyethylene liners, are one of the best choices for flexible pond liners. They offer even better puncture resistance than either EPDM or PVC liner, while weighing roughly one-third as much and being half as thick.
Which is better PVC or EPDM pond liner?
Pond liners made from EPDM, a synthetic rubber, are significantly more flexible and durable than liners made from PVC or HDPE. Because EPDM liners contain no plasticizers that can become brittle with age, the liners maintain flexibility and resist cracking in cold weather conditions down to minus 40 degrees Fahrenheit.
How do I choose a pond liner?
To calculate how much pond liner you need, measure the maximum width, maximum length and maximum depth, then add double the depth measurement onto both width and length to get the size of pond liner you need. Then add another 30cm/12” onto the width and length to give you some spare liner for laying around the edge.
What is the longest lasting pond liner?
RPE pond liners are by far the most durable of all of the materials available. Because these liners are reinforced, they are stronger and more puncture resistant than the two other major types of pond liners. Here are a few facts to consider about RPE liners: RPE liners are half the thickness of EPDM and PVC liners.Which is best butyl or EPDM?
If you want a simple answer, choose EPDM pond liners available in three different thicknesses for small to more demanding applications. It is the more modern material, it looks virtually the same, it is slightly more flexible and so easier to install and, best of all, it is typically 30% cheaper than Butyl.
Is HDPE pond liner any good?
HDPE liners are commonly used in landfills and chemical containment sites, but they are also safe and well-suited for fish ponds. No matter where they are, HDPE liners are very durable, having been found to last upwards of 36 years when covered.
What thickness pond liner is best?
When tree root penetration is a problem or there’s regular traffic in and out of the pond, liners 30 mils and thicker are recommended even for basic ponds. Even backyard ponds benefit from a 30 mil or greater liner to prevent rocks and roots from wearing holes in a thinner material.
What is the difference between EPDM and HDPE?
Durability and Aging Firestone EPDM is a synthetic rubber material designed for decades of outdoor exposure to the elements and inert to the effects of buried environments containing microorganisms. HDPE is a semicrystalline thermoplastic material that is also designed for exposed conditions.How big of a pond liner do I need?
Here is how to calculate pond liner size for your project: Length: Add the maximum length, plus twice the maximum depth, plus at least one extra foot (5 feet extra with large ponds 50’+). Width: Add the maximum width, plus twice the maximum depth, plus at least one extra foot (5 feet extra with large ponds 50’+).
Do I need underlayment for pond liner?Underlayment is an important part of building your pond and water features. It helps protect your pond liner from being punctured, and more, over time.
Article first time published onAre EPDM pond liners any good?
EPDM Rubber Pond Liner EDPM is rated down to -45 C. It is fish safe and is even rated for potable water use. … Most of the available pond liner is made by Firestone, so there is a level of confidence in the quality. Butyl rubber pond liners can also be used, but they have become very expensive and are no longer popular.
Is EPDM the same as butyl?
EPDM (ethylene propylene diene Monomer) is a synthetic rubber with properties very similar to butyl rubber pond liners. Historically butyl rubber pond liners have always been seen as ‘top of the tree’ in terms of desireability for pond builders in theUK.
What are the different types of pond liners?
- Most Common Pond Liner Material: EPDM vs RPE. For most custom pond applications, we usually recommend one of two materials: EPDM Rubber or RPE (reinforced polyethylene). …
- EPDM Rubber Liners. …
- Reinforced Polyethylene Liners (RPE) …
- Box Welded Polypropylene Liners.
What is Butyl liner?
Butyl pond liner is made of 0.75mm thick synthetic rubber has been used to line ponds in the UK for over 40 years and is still considered to be one of the best pond liners on the market. … Butyl is much more heavy duty than PVC and is less likely to be damaged.
Is EPDM the same as pond liner?
EPDM pond liner (ethylene propylene diene monomer) is the ideal solution for water retention and widely used to line lakes, garden ponds and man-made streams. EPDM is a synthetic rubber with properties very similar to butyl pond liner and has become a leading product for lining garden ponds.
What is Firestone pond liner?
Firestone Rubber PondGard Pond Liner is an EPDM Geomembrane designed for water gardens including garden ponds, koi ponds, formal ponds, and lakes. Designed to be safe with aquatic life, in accordance with test reports published by the UK Water Research Centre.
What is LDPE pond liner?
LDPE (Low-density polyethene) Liner Low-density polyethene is made up of extremely tightly bound fibres between layers of UV-proof and rot resistant coating. This blend of material has resulted in a strong pond liner that is still flexible enough to be positioned however you please.
What do you put under a pond liner?
To protect the liner from damage, place a 2- to 3-inch layer of sand or an underlayment over the soil before positioning the liner. Hide the liner, if desired, by placing a layer of river rocks over the bottom of the liner and stacking rocks to cover the sides.
How long do rubber pond liners last?
To summarize, a rubber pond or flexible PVC liner can last for 20 years or longer as long as they are installed over a protective underlay and secured in place using the right edging materials and are protected against visits by clawed animals.
What is the best pond liner for a wildlife pond?
Butyl rubber is by far the best material. Puddled clay has the virtue of being natural, but is difficult to handle, and even more difficult to make watertight. Concrete is not really suitable for an irregular, natural-looking pond, as it can be difficult to install and prone to cracking.
Is LDPE a good pond liner?
In general, a rubber pond liner is more suited to rougher sediment, as it’s very durable and strong. A plastic pond liner, such as PVC or LDPE, is better suited for pond designs which require flexibility, as it’s usually easier to work with compared to rubber.
What is EPDM pond liner?
EPDM stands for Ethylene Propylene Diene Monomer. EPDM pond liners fall under the classification of flexible pond liners, meaning they can be manipulated into nearly any size and shape. Often, one sheet of EPDM rubber material will be big enough to meet your needs.
How deep should a wildlife pond be?
The depth of a wildlife pond should be 24 to 36″, that’s 2ft to 3ft at its maximum depth. However, shallower areas of around 8″ to 12″ should be included for plants to root and push out of the surface. Consider building in a beached area for mammals that fall in to escape.
How much pond underlayment do I need?
Reminder About Pond Liner Material It’s sold in sections that are 10′ wide, so you can calculate the size you’ll need with these steps: Multiply the length and width of your liner: 15′ x 20′ = 300′ Divide by the width of the underlayment: 300′ / 10′ = 30′
Can you join HDPE pond liner?
Can you join pond liners together? The simple answer to this is yes, for the most part!
What are HDPE liners?
HDPE pond liners are both tough and flexible, with high resistance to chemicals and corrosion. HDPE liners are among the most durable and long-lasting polyethylene liners on the market. They can be fusion weld together, forming permanent seals in the field.
What is a flexi pond liner?
Flexible pond liners Due to possible ground movement, a pond liner also needs to be flexible enough to be resistant to pressure from growing roots. Flexible pond liners are dark in colour, which gives a pond a greater feeling of depth.
Can you use carpet as underlay for pond?
Carpet is sometimes suggested as a pond liner underlay and you might get away with this – just ensure that the carpet is a man-made fibre such as polypropylene as a natural fabric such as wool will rot over time reducing it’s effectiveness as a barrier and leaving the pond liner exposed to danger.
Can you use a tarp for pond liner?
While tarps are water resistant, they are not waterproof. A tarp used as a pond liner will begin to leak before a single season passes. … You can cut the bottom section to size and use it to line your garden pond for a few years of quiet enjoyment.
Can I put a new pond liner over an old one?
It’s best to remove old and damaged liners before adding new layers, but it is possible in some cases to just place down a new liner over the old one. You’ll need to remove everything that’s in the pond first, including any rooted plants and sand or gravel spread over the bottom.
Can you use EPDM for pond liner?
Firestone PondGard Pond Liner Proudly made in America. EPDM Pond Liner (Ethylene Propylene Diene Monomer) is a synthetic rubber, highly flexible stable material that is not only easy to work with, but long lasting and aquatic safe.