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Pond Liner Underlay

Underlay for Pond Liners
Essential to protect your pond liner. Our pond liners can only be guaranteed when under laid.
Pond Liner Size
Quality
Length / Width
Basic
Best
Select Guarantee
underlay
Flexiliner
2m / 2m
£7.20
£11.20
Guarantee Period
Basic
£7.20
Best
£11.20
Select Guarantee
underlay
Flexiliner
2.5m / 2m
£9.00
£14.00
Guarantee Period
Basic
£9.00
Best
£14.00
Select Guarantee
underlay
Flexiliner
3m / 3m
£16.20
£25.20
Guarantee Period
Basic
£16.20
Best
£25.20
Select Guarantee
underlay
Flexiliner
3m / 5m
£27.00
£42.00
Guarantee Period
Basic
£27.00
Best
£42.00
Select Guarantee
underlay
Flexiliner
4m / 3m
£21.60
£33.60
Guarantee Period
Basic
£21.60
Best
£33.60
Select Guarantee
underlay
Flexiliner
4m / 4m
£28.80
£44.80
Guarantee Period
Basic
£28.80
Best
£44.80
Select Guarantee
underlay
Flexiliner
5m / 3m
£27.00
£42.00
Guarantee Period
Basic
£27.00
Best
£42.00
Select Guarantee
underlay
Flexiliner
5m / 4m
£36.00
£56.00
Guarantee Period
Basic
£36.00
Best
£56.00
Select Guarantee
underlay
Flexiliner
5m / 4.5m
£40.50
£63.00
Guarantee Period
Basic
£40.50
Best
£63.00
Select Guarantee
underlay
Flexiliner
5m / 5m
£45.00
£70.00
Guarantee Period
Basic
£45.00
Best
£70.00
Select Guarantee
underlay
Flexiliner
6m / 3m
£32.40
£50.40
Guarantee Period
Basic
£32.40
Best
£50.40
Select Guarantee
underlay
Flexiliner
6m / 4m
£43.20
£67.20
Guarantee Period
Basic
£43.20
Best
£67.20
Select Guarantee
underlay
Flexiliner
6m / 4.5m
£48.60
£75.60
Guarantee Period
Basic
£48.60
Best
£75.60
Select Guarantee
underlay
Flexiliner
6m / 5m
£54.00
£84.00
Guarantee Period
Basic
£54.00
Best
£84.00
Select Guarantee
underlay
Flexiliner
6m / 6m
£64.80
£100.80
Guarantee Period
Basic
£64.80
Best
£100.80
Select Guarantee
underlay
Flexiliner
7m / 3m
£37.80
£58.80
Guarantee Period
Basic
£37.80
Best
£58.80
Select Guarantee
underlay
Flexiliner
7m / 4m
£50.40
£78.40
Guarantee Period
Basic
£50.40
Best
£78.40
Select Guarantee
underlay
Flexiliner
7m / 5m
£63.00
£98.00
Guarantee Period
Basic
£63.00
Best
£98.00
Select Guarantee
underlay
Flexiliner
7m / 5.5m
£69.30
£107.80
Guarantee Period
Basic
£69.30
Best
£107.80
Select Guarantee
underlay
Flexiliner
7m / 6m
£75.60
£117.60
Guarantee Period
Basic
£75.60
Best
£117.60
Select Guarantee
underlay
Flexiliner
7m / 6.5m
£81.90
£127.40
Guarantee Period
Basic
£81.90
Best
£127.40
Select Guarantee
underlay
Flexiliner
7m / 7m
£88.20
£137.20
Guarantee Period
Basic
£88.20
Best
£137.20
Select Guarantee
underlay
Flexiliner
7.5m / 6m
£81.00
£126.00
Guarantee Period
Basic
£81.00
Best
£126.00
Select Guarantee
underlay
Flexiliner
7.5m / 7m
£94.50
£147.00
Guarantee Period
Basic
£94.50
Best
£147.00
Select Guarantee
underlay
Flexiliner
7.5m / 7.5m
£101.25
£157.50
Guarantee Period
Basic
£101.25
Best
£157.50
Select Guarantee
underlay
Flexiliner
8m / 3m
£43.20
£67.20
Guarantee Period
Basic
£43.20
Best
£67.20
Select Guarantee
underlay
Flexiliner
8m / 4m
£57.60
£89.60
Guarantee Period
Basic
£57.60
Best
£89.60
Select Guarantee
underlay
Flexiliner
8m / 5m
£72.00
£112.00
Guarantee Period
Basic
£72.00
Best
£112.00
Select Guarantee
underlay
Flexiliner
8m / 6m
£86.40
£134.40
Guarantee Period
Basic
£86.40
Best
£134.40
Select Guarantee
underlay
Flexiliner
8m / 7m
£100.80
£156.80
Guarantee Period
Basic
£100.80
Best
£156.80
Select Guarantee
underlay
Flexiliner
8m / 8m
£115.20
£179.20
Guarantee Period
Basic
£115.20
Best
£179.20
Select Guarantee
underlay
Flexiliner
9m / 5m
£81.00
£126.00
Guarantee Period
Basic
£81.00
Best
£126.00
Select Guarantee
underlay
Flexiliner
9m / 6m
£97.20
£151.20
Guarantee Period
Basic
£97.20
Best
£151.20
Select Guarantee
underlay
Flexiliner
9m / 7m
£113.40
£176.40
Guarantee Period
Basic
£113.40
Best
£176.40
Select Guarantee
underlay
Flexiliner
9m / 8m
£129.60
£201.60
Guarantee Period
Basic
£129.60
Best
£201.60
Select Guarantee
underlay
Flexiliner
9m / 9m
£145.80
£226.80
Guarantee Period
Basic
£145.80
Best
£226.80
Select Guarantee
underlay
Flexiliner
10m / 6m
£108.00
£168.00
Guarantee Period
Basic
£108.00
Best
£168.00
Select Guarantee
underlay
Flexiliner
10m / 7m
£126.00
£196.00
Guarantee Period
Basic
£126.00
Best
£196.00
Select Guarantee
underlay
Flexiliner
10m / 8m
£144.00
£224.00
Guarantee Period
Basic
£144.00
Best
£224.00
Select Guarantee
underlay
Flexiliner
10m / 9m
£162.00
£252.00
Guarantee Period
Basic
£162.00
Best
£252.00
Select Guarantee
underlay
Flexiliner
10m / 10m
£180.00
£280.00
Guarantee Period
Basic
£180.00
Best
£280.00
Select Guarantee
underlay
Flexiliner
11m / 7m
£138.60
£215.60
Guarantee Period
Basic
£138.60
Best
£215.60
Select Guarantee
underlay
Flexiliner
11m / 8m
£158.40
£246.40
Guarantee Period
Basic
£158.40
Best
£246.40
Select Guarantee
underlay
Flexiliner
11m / 9m
£178.20
£277.20
Guarantee Period
Basic
£178.20
Best
£277.20
Select Guarantee
underlay
Flexiliner
11m / 10m
£198.00
£308.00
Guarantee Period
Basic
£198.00
Best
£308.00
Select Guarantee
underlay
Flexiliner
12m / 7m
£151.20
£235.20
Guarantee Period
Basic
£151.20
Best
£235.20
Select Guarantee
underlay
Flexiliner
12m / 8m
£172.80
£268.80
Guarantee Period
Basic
£172.80
Best
£268.80
Select Guarantee
underlay
Flexiliner
12m / 9m
£194.40
£302.40
Guarantee Period
Basic
£194.40
Best
£302.40
Select Guarantee
underlay
Flexiliner
12m / 10m
£216.00
£336.00
Guarantee Period
Basic
£216.00
Best
£336.00
Select Guarantee
underlay
Flexiliner
12m / 12m
£259.20
£403.20
Guarantee Period
Basic
£259.20
Best
£403.20
Select Guarantee
underlay
Flexiliner
13m / 8m
£187.20
£291.20
Guarantee Period
Basic
£187.20
Best
£291.20
Select Guarantee
underlay
Flexiliner
13m / 9m
£210.60
£327.60
Guarantee Period
Basic
£210.60
Best
£327.60
Select Guarantee
underlay
Flexiliner
13m / 10m
£234.00
£364.00
Guarantee Period
Basic
£234.00
Best
£364.00
Select Guarantee
underlay
Flexiliner
13m / 12m
£280.80
£436.80
Guarantee Period
Basic
£280.80
Best
£436.80
Select Guarantee
underlay
Flexiliner
13m / 13m
£304.20
£473.20
Guarantee Period
Basic
£304.20
Best
£473.20
Select Guarantee
underlay
Flexiliner
14m / 8m
£201.60
£313.60
Guarantee Period
Basic
£201.60
Best
£313.60
Select Guarantee
underlay
Flexiliner
14m / 9m
£226.80
£352.80
Guarantee Period
Basic
£226.80
Best
£352.80
Select Guarantee
underlay
Flexiliner
14m / 10m
£252.00
£392.00
Guarantee Period
Basic
£252.00
Best
£392.00
Select Guarantee
underlay
Flexiliner
14m / 12m
£302.40
£470.40
Guarantee Period
Basic
£302.40
Best
£470.40
Select Guarantee
underlay
Flexiliner
14m / 14m
£352.80
£548.80
Guarantee Period
Basic
£352.80
Best
£548.80
Select Guarantee
underlay
Flexiliner
15m / 8m
£216.00
£336.00
Guarantee Period
Basic
£216.00
Best
£336.00
Select Guarantee
underlay
Flexiliner
15m / 9m
£243.00
£378.00
Guarantee Period
Basic
£243.00
Best
£378.00
Select Guarantee
underlay
Flexiliner
15m / 10m
£270.00
£420.00
Guarantee Period
Basic
£270.00
Best
£420.00
Select Guarantee
underlay
Flexiliner
15m / 12m
£324.00
£504.00
Guarantee Period
Basic
£324.00
Best
£504.00
Select Guarantee
underlay
Flexiliner
15m / 15m
£405.00
£630.00
Guarantee Period
Basic
£405.00
Best
£630.00
Select Guarantee
underlay
Flexiliner
16m / 10m
£288.00
£448.00
Guarantee Period
Basic
£288.00
Best
£448.00
Select Guarantee
underlay
Flexiliner
16m / 12m
£345.60
£537.60
Guarantee Period
Basic
£345.60
Best
£537.60
Select Guarantee
underlay
Flexiliner
18m / 10m
£324.00
£504.00
Guarantee Period
Basic
£324.00
Best
£504.00
Select Guarantee
underlay
Flexiliner
18m / 12m
£388.80
£604.80
Guarantee Period
Basic
£388.80
Best
£604.80
Select Guarantee
underlay
Flexiliner
18m / 15m
£486.00
£756.00
Guarantee Period
Basic
£486.00
Best
£756.00
Select Guarantee
underlay
Flexiliner
20m / 15m
£540.00
£840.00
Guarantee Period
Basic
£540.00
Best
£840.00
Select Guarantee
underlay
Flexiliner
20m / 18m
£648.00
£1,008.00
Guarantee Period
Basic
£648.00
Best
£1,008.00
Select Guarantee
underlay
Flexiliner
24m / 15m
£648.00
£1,008.00
Guarantee Period
Basic
£648.00
Best
£1,008.00
Select Guarantee
underlay
Flexiliner
24m / 18m
£475.20
£1,209.60
Guarantee Period
Basic
£475.20
Best
£1,209.60
Select Guarantee
underlay
Flexiliner
26m / 18m
£842.40
£1,310.40
Guarantee Period
Basic
£842.40
Best
£1,310.40
Select Guarantee
underlay
Flexiliner
26m / 20m
£936.00
£1,456.00
Guarantee Period
Basic
£936.00
Best
£1,456.00
Select Guarantee
underlay
Flexiliner
28m / 18m
£907.20
£1,411.20
Guarantee Period
Basic
£907.20
Best
£1,411.20
Select Guarantee
underlay
Flexiliner
28m / 20m
£1,008.00
£1,568.00
Guarantee Period
Basic
£1,008.00
Best
£1,568.00
Select Guarantee
underlay
Flexiliner
30m / 16m
£864.00
£1,344.00
Guarantee Period
Basic
£864.00
Best
£1,344.00
Select Guarantee
underlay
Flexiliner
30m / 18m
£972.00
£1,512.00
Guarantee Period
Basic
£972.00
Best
£1,512.00
Select Guarantee
underlay
Flexiliner
30m / 20m
£1,080.00
£1,680.00
Guarantee Period
Basic
£1,080.00
Best
£1,680.00
Select Guarantee
underlay
Flexiliner
32m / 20m
£1,152.00
£1,792.00
Guarantee Period
Basic
£1,152.00
Best
£1,792.00
Select Guarantee
underlay
Flexiliner
32m / 22m
£1,267.20
£1,971.20
Guarantee Period
Basic
£1,267.20
Best
£1,971.20
Select Guarantee
underlay
Flexiliner
34m / 18m
£1,101.60
£1,713.60
Guarantee Period
Basic
£1,101.60
Best
£1,713.60
Select Guarantee
underlay
Flexiliner
34m / 20m
£1,224.00
£1,904.00
Guarantee Period
Basic
£1,224.00
Best
£1,904.00
Select Guarantee
underlay
Flexiliner
34m / 22m
£1,346.40
£2,094.40
Guarantee Period
Basic
£1,346.40
Best
£2,094.40
Select Guarantee
underlay
Flexiliner
34m / 26m
£1,591.20
£2,475.20
Guarantee Period
Basic
£1,591.20
Best
£2,475.20
Select Guarantee
underlay
Flexiliner
36m / 24m
£1,555.20
£2,419.20
Guarantee Period
Basic
£1,555.20
Best
£2,419.20
Select Guarantee
underlay
Flexiliner
36m / 27m
£1,749.60
£2,721.60
Guarantee Period
Basic
£1,749.60
Best
£2,721.60
Select Guarantee
underlay
Flexiliner
38m / 26m
£1,778.40
£2,766.40
Guarantee Period
Basic
£1,778.40
Best
£2,766.40
Select Guarantee
underlay
Flexiliner
40m / 20m
£1,440.00
£2,240.00
Guarantee Period
Basic
£1,440.00
Best
£2,240.00
Select Guarantee
underlay
Flexiliner
40m / 30m
£2,160.00
£3,360.00
Guarantee Period
Basic
£2,160.00
Best
£3,360.00
Select Guarantee
underlay
Flexiliner
40m / 40m
£2,880.00
£4,480.00
Guarantee Period
Basic
£2,880.00
Best
£4,480.00
Select Guarantee
underlay
Flexiliner
45m / 40m
£3,420.00
£5,040.00
Guarantee Period
Basic
£3,420.00
Best
£5,040.00

Basic = 60gsm (BLACK), Best = 200gsm (GREY)
Supplied in sheets of 8m x 2m or 5m x 2m to cover the required area.

Consider buying a underlay larger than you think you might need - it's easy to be over enthusiastic when digging! And the liner can always be cut down to size.