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Swell HDPE Pond Liner 25-Year Guarantee With Heavy Duty Underlay

A fantastic choice of pond liner

At a glance...
  • Thick 0.35mm HDPE pond liner with heavy duty underlay
  • Supple, UV resistant and 25-year guarantee
  • Available in a wide variety of sizes
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Palletised delivery

Large sizes may be delivered on a pallet for protection in transit.

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Great product, swift delivery. Pond liner moulded to the shape easily, as well as being light to handle.


What is the Swell HDPE Pond Liner 25-Year With Heavy Duty Underlay?

This is Swell UK's most popular pond liner teamed up with our most popular heavy duty underlay. Simply place the underlay and cover it in the liner to protect your pond from drainage. While there are many different liner materials, this one has been fashioned from 0.35mm-thick UV-resistant HDPE which is supple, making installation a breeze. The liner is so durable that we even sell it with a 25-year guarantee against UV damage.

How hard is it to install this pond liner?

UV-resistant HDPE pond liners are quite supple, making installation easy.

How should I measure my pond liner?

Pond liners are measured by length and width. However, when deciding on the size of your liner, it's key to consider the depth of your pond too as deeper ponds will need more material.

How much pond liner should I buy?

Our handy Pond Liner Calculator will help you find the right size of liner for your pond. We'll even match the size of your liner with an appropriate pond liner underlay, so there's no need to worry about the size of your underlay.

What does the guarantee cover?

This Swell Pond Liner With Swell Pond Liner Underlay carries a 25-year guarantee, but we also have other variations with 40-year and lifetime guarantees. As with every pond liner sold in the UK, the guarantee covers UV damage only, not punctures.




Material HDPE
Thickness 0.35mm
Colour Black
Liner suppleness Very
Liner stretchiness No stretch
UV resistant Yes
Guarantee 25 years
Underlay included Yes
Underlay type Swell Pond Liner Heavy Duty Underlay
Underlay thickness 80gsm
Underlay colour White
Pond sizes Small-large
Koi window compatibility Not suitable
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