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Flexiliner 4m x 4m 40yr Plus Underlay

Product Code: FL040X040-15F
PondXpert
£32.00
Was £76.64
RRP: £153.28 | Save £121.28 (79%)
In Stock
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About the Flexiliner 4m x 4m 40yr Plus Underlay

Manufacturer: PondXpert

This bestselling pond liner is guaranteed for 40 years and comes with free underlay worth £28.80.

PondXpert Flexiliner is the UK's top selling liner. Pondkeepers love it because it is tough and highly durable yet easy to lay and form into shape. The 4m x 4m liner (13' x 13') is a very popular choice. This flexible liner is manufactured around a triple-core process. A tough inner layer of tightly woven LDPE fabric is laminated on both sides with a UV resistant coating.

Flexiliner 4m x 4m 40yr Plus Underlay Features

4m x 4m pond liner supplied with 16sqm of 60gsm underlay

Liner is manufactured from densley woven LDPE which is then laminated on both sides with a UV resistant coating

This strong lining is guaranteed watertight for 40 years

This sized liner can be used to create a 2,000 litre pond (440 gallons) sized 2m x 2m x 0.5m deep (6'6" x 6'6" x 1'8" deep)

Reviews for Flexiliner 4m x 4m 40yr Plus Underlay

Trusted Customer
15th October 2026
Easy to cut and lay
David Dorber, GBR
10th September 2026
Excellent quality and easy to use and very good priceprices
Trusted Customer
21st August 2026
Trusted Customer
28th May 2026
Arrived quickly does what is says happy with purchase made a lovely pond
John Haynes, GBR
16th February 2026
Pond liner came quite quickly. It seems to be fairly good quality and laid down well.
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