What To Look For in a Pond Liners
If your main priority is a crease-free finish, you’ll want a liner made from either PVC (polyvinyl chloride) or LDPE (low-density polyethylene). These non-rubber liners are highly flexible and are the best choice for unusually-shaped ponds. However, they may require replacing every 5 years or so. Look for UV-protected liners to avoid accelerated degradation in sunlight.
Butyl rubber will make the best pond liner if you want something durable. These rubber pond liners can last for up to 20 years and therefore rarely need replacing. However, you’ll want to avoid rubber liners if your pond isn’t a standard shape. EPDM (Ethylene Propylene Diene Monomer) liners are a good choice if you want a durable rubber liner on a tighter budget.
It is also beneficial to buy a pond liner that comes with included underlay. I recommend always using underlay under a pond liner, as it can help the liner last longer. You can always buy it separately, of course, but it makes the job less hassle if it all comes together.
For small ponds (around 100 L x 150 W x 50 D), you’ll need a pond liner that’s 300 cm long and 350 cm wide. This will allow for an overlap as well. You can find the formula for choosing the right size liner for your pond at the bottom of this page.
Finally, if your pond contains fish, make sure the liner is safe for use around aquatic life.
After researching various pond liners, I recommend the PondHero Pond Liner with Free Underlay. It’s made from UV-resistant LDPE, so it’s flexible, lightweight and easy to lay. There are 59 sizes available, meaning there’s loads of choice, and underlay comes included for a hassle-free purchase.
For more details about this pond liner, as well as some alternative options, check out the following reviews.