The best pond liners, compared.
Top pick: PondKraft 4 m × 4 m pond liner – Highest score: stated 0.35 mm tri-laminate LDPE and 4.6 from 404 reviews at about £28.99, with the guarantee terms still unstated. Best value: Storystore 3 m × 3 m pond liner – About £1.67 a square metre at about £14.99, on a 3 m by 3 m sheet whose dimension line matches 0.2 mm. Updated October 2026.
A pond liner is the waterproof sheet that holds water in a dug or raised garden pond. In the UK, the Royal Horticultural Society treats flexible butyl or PVC as the usual way to choose your own shape, and specialist shops sell EPDM or butyl at about 0.75 mm or 1.0 mm. They are HDPE or LDPE from 0.1 mm to 0.5 mm, one tri-laminate LDPE at 0.35 mm and at least 200 gsm, and one 1 m square sold as 200 gsm. Several saved UK reviews of the 0.1 mm films call them bin-bag plastic or greenhouse film. Depth and overlap are set out in the [pond liner buying guide](/hub/garden-ponds/pond-liner/sub/pond-liner-buying-guide). PVC at about 0.5 mm is the cheaper plastic those shops still name. The twelve amazon.co.uk listings are not that rubber. Roofing EPDM is not automatically a pond liner. One UK retailer warns that some roofing grades are toxic to fish. No listing here is scored as butyl, as EPDM, as a welded box, or as a fish-safety certificate.
A pond liner is the waterproof sheet that holds water in a dug or raised garden pond.
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Personal buying guide
Question 1 of 2
What are you lining, after you have added depth and overlap?
PondKraft's 4 m by 4 m sheet is listed at about £28.99 as tri-laminate LDPE, 0.35 mm, and at least 200 g/m², with a UV-stabilised coating on both sides. The amazon.co.uk line is 4.6 from 404 reviews. Packed dimensions are 57 cm by 40 cm by 4 cm and 3.3 kg, so that line is the parcel, not the open sheet. In 50 saved texts, many ponds are said to hold, including one checked after eight months. The same sample includes a join that opened, a slow leak on sand and geotextile, and a sheet cut short. The title says a 25 year guarantee, and the five bullets do not say what it covers or whether underlay is required. It is the top pick in this set because the stated thickness, the sheet size, and the review volume sit on one row, and a stone can still puncture it.
Pros
Cons
Best for: You want the clearest stated midweight in this set, and the hole fits inside 4 m by 4 m after depth and overlap.
Less suitable: You need specialist EPDM or butyl, or a guarantee whose terms are printed in the bullets.
Specifications
Common questions
What material and thickness do the bullets state?
Tri-laminate LDPE, 0.35 mm, minimum 200 grams per square metre, UV-stabilised coating both sides, black/brown reversible.
What does the 25 year line cover?
The title says 25 year guarantee. The five bullets do not say what it covers or whether underlay is required.
What do the saved reviews say?
In 50 texts, many ponds are said to hold, including one checked after eight months. Others report a join that opened, a slow leak on sand and geotextile, or a sheet cut short.
Storystore's 3 m by 3 m HDPE sheet is about £14.99 with 0.2 mm on the title, and the dimension line prints 300 cm by 300 cm by 0.02 cm and 1.71 kg, which matches. On the stated 9 m² that is about £1.67 a square metre. The amazon.co.uk line is 4.4 from only three reviews. One of those three texts describes a 2 m by 2 m size. The material bullet says HDPE, and a later bullet calls it a rubber pond liner. The three texts call it useful for a small pond or container and say 0.2 mm needs underlay on sharp ground. It is the best value row here because the size lines agree and the price per square metre is low among sheets that print a thickness, and three reviews do not show how long it lasts.
Pros
Cons
Best for: You want a 3 m square at a low price per square metre, and you will put underlay under 0.2 mm on sharp ground.
Less suitable: You need a large review sample, or a listing that does not also call an HDPE sheet rubber.
Specifications
Common questions
Do the size and thickness lines agree?
The title and the specification bullet say 3 m by 3 m and 0.2 mm HDPE. Product dimensions say 300 x 300 x 0.02 cm and 1.71 kg, which matches.
Why do the bullets say rubber?
The material bullet says HDPE. A later bullet calls it a rubber pond liner. Both words are printed. No certificate is printed.
What do the three reviews say?
They call it sturdy and useful for a small pond or container, and they say 0.2 mm needs underlay on sharp ground. One text describes a 2 m by 2 m size.
GARDENIX sells a 1 m by 1 m sheet at about £6.72, stated as 200 gsm, with no polymer name and no millimetres on the title. The dimension line prints 100 cm by 100 cm by 0.2 cm and 190 g. 190 g on 1 m² sits near the 200 gsm claim, and 0.2 cm is a different figure, so both lines stay as printed. The amazon.co.uk line is 4.3 from 165 reviews. In 50 texts, some small ponds and water features are said to hold, while others report leaks, holes on arrival, or a sheet that was not waterproof. Several of those texts name a larger size than 1 m by 1 m. The 1 m title does not list underlay. It is a container-sized sheet, and the review pool is mixed with other sizes.
Pros
Cons
Best for: You are lining a container or a very small patch, and you will ignore reviews that name a 3 m sheet.
Less suitable: You need a named polymer, a millimetre thickness, or a sheet larger than 1 m by 1 m.
Specifications
Common questions
What size and weight does this listing state?
The title says 1 m by 1 m and 200 gsm. The dimension line says 100 x 100 x 0.2 cm and 190 g. Both are printed.
Is underlay in the box?
The 1 m by 1 m title does not list underlay. A bullet tells you to use underlay and names other sizes. Technical details do not list components.
What do the saved reviews say about leaks?
In the 50 texts, some small ponds and water features are said to hold. Others report leaks, holes on arrival, or a sheet that was not waterproof. Some of those texts name a larger size than 1 m by 1 m.
Storystore's 3 m by 4 m listing is about £34.19 and states 0.5 mm HDPE. Product dimensions print 1 cm by 1 cm by 1 cm and 5.02 kg, which does not match that sheet. The amazon.co.uk line is 4.3 from 133 reviews. The title says preformed and underlay, a bullet calls it pond liner underlayment and tells you to add rounded pebbles, and fleece is not listed as a second item. Among 16 texts, buyers report a thick sheet that held a small pond, and others report a brittle sheet that split or leaked on first fill. Two of those texts are about television speakers and a solar panel, and a bullet also says rubber. You are reading a 0.5 mm claim next to a size line that does not describe 3 m by 4 m.
Pros
Cons
Best for: You want a stated 0.5 mm on a 3 m by 4 m title, and you will measure the sheet when it arrives.
Less suitable: You are buying it as fleece, as a preformed shell, or as rubber.
Specifications
Common questions
What thickness and size does the title state?
3 m by 4 m and 0.5 mm HDPE. Product dimensions say 1 x 1 x 1 cm and 5.02 kg.
Why does the listing say underlay?
The title includes the word underlay. One bullet calls it flexible pond liner underlayment and tells you to clean the ground and add rounded pebbles. Fleece is not listed as a second item.
What do the liner reviews say?
Among the 16 texts, buyers report a thick sheet that held a small pond, and others report a brittle sheet that split or leaked on first fill. Two texts are about speakers and a solar panel.
The Tezhiie LDPE listing is about £59.99, the highest price in this set. The title says 4 m by 5 m and 20 mil. The bullet says 20 mil / 0.5 mm and repeats 4 m by 5 m. Product dimensions print 200 cm by 400 cm by 0.5 cm and 3.8 kg, which reads as 2 m by 4 m and a 0.5 cm thickness, not the title. The amazon.co.uk line is 4.3 from 23 reviews. Nine saved texts call it strong, waterproof, or easy to cut, and also report a split within five minutes and welds that stuck a stated 4 m by 5 m sheet down to about 3 m by 2 m. The manufacturer line says Tezhile and the title says Tezhiie. At this price the two size lines are the first check on the parcel.
Pros
Cons
Best for: You already know you want LDPE at a stated 20 mil, and you will measure the sheet before you cut the hole to 4 m by 5 m.
Less suitable: You need one size line, or you are paying about £59.99 on the title area alone.
Specifications
Common questions
Do the size lines agree?
The title and the specification bullet say 4 m by 5 m. Product dimensions say 200 x 400 x 0.5 cm and 3.8 kg, which is 2 m by 4 m and 0.5 cm thick. Both are printed.
What material and thickness are stated?
The title says LDPE and 20 mil. The bullet says 20 mil / 0.5 mm. The manufacturer line says Tezhile. The title says Tezhiie.
What do the nine reviews say?
Buyers call it strong, waterproof, or easy to cut. Others report a split within five minutes, or welds that stuck a 4 m by 5 m sheet down to about 3 m by 2 m.
The MIKIICOCO HDPE listing is about £9.98 with 3 m by 2 m on the title and no thickness in millimetres. Product dimensions print 0.2 cm by 3 cm by 1 cm and 670 g, which does not match that title. The amazon.co.uk line is 4.1 from 186 reviews. In 50 texts, buyers report overnight punctures, a hole on arrival, and a sheet with no stretch. Others report a wildlife pond or a water feature that held. A bullet says the sheet is harmless to plants and fish, and no certificate is printed. The star line sits on a product whose thickness is not stated. Reviews that describe it as not rubber match the HDPE wording, and they also show you cannot ease it into a corner the way a specialist rubber guide assumes.
Pros
Cons
Best for: You can measure the sheet on arrival and you only need a small water feature if the film is thin.
Less suitable: You need a stated thickness, or a size line that matches 3 m by 2 m.
Specifications
Common questions
Does this listing state a thickness?
No. The bullets say HDPE. They do not give millimetres.
Do the size lines agree?
The title says 3 m by 2 m. The dimension line says 0.2 x 3 x 1 cm and 670 g. Both are printed.
What do the UK reviews say about leaks?
In the 50 texts, buyers report overnight punctures, a hole on arrival, and a sheet with no stretch. Others report a wildlife pond or a water feature that held.
This SDLDEER listing is about £50.99 for a black HDPE sheet stated as 4 m by 6 m and 0.5 mm, with a packed weight of 8.58 kg. The amazon.co.uk line is 4.0 from 269 reviews. The part number and model are Teichfolie2X2, which does not match a 4 m by 6 m title. In 14 saved UK texts, some buyers say it held or lined planters. Others report about 20 litres gone in 10 hours, a half-empty pond after a few days, a leak after two weeks, cracks after about eight months, and a stiff sheet. A bullet says it is safe for fish and plants, and no certificate is printed. You are paying for a stated 0.5 mm area while the part number still needs checking against the parcel.
Pros
Cons
Best for: You have measured a hole that needs about 4 m by 6 m, and you will check the parcel against the part number before you dig.
Less suitable: You want a part number that matches the title, or a sheet the saved texts do not describe as stiff.
Specifications
Common questions
What size and thickness does the listing state?
The title says 4 m by 6 m and 0.5 mm HDPE. Package dimensions are 43.29 x 33 x 20.4 cm and 8.58 kg. The part number is Teichfolie2X2.
Do the bullets say it is safe for fish?
The material bullet says it is environmentally friendly and safe for fish and plants. A later bullet calls it the preferred choice for koi ponds. No certificate is printed.
What do the saved UK reviews say about leaks?
In 14 texts, some buyers say it held or lined planters. Others report about 20 litres gone in 10 hours, a half-empty pond after a few days, and a leak after two weeks.
This SDLDEER listing is about £20.99 for black HDPE stated as 3 m by 4 m and 0.2 mm. Product dimensions print 1 cm by 1 cm by 1 cm and 2.27 kg, which does not match 3 m by 4 m. The amazon.co.uk line is 3.9 from 32 reviews. Six saved reviews include a beginner pond said to have filled well. Others call the sheet thin, hard to fold without cracking, or not stretchy. One text says a prepared pond kept emptying, and the notes also record a first-day failure and a leak after a sand bed. A bullet calls it the preferred choice for koi ponds, and no certificate is printed. The brand is on the manufacturer line, not in the title.
Pros
Cons
Best for: You want a stated 0.2 mm on a 3 m by 4 m title, and you will check the sheet before you trust the size.
Less suitable: You need the dimension line to match the title, or a sheet the reviews describe as easy to fold.
Specifications
Common questions
What size and thickness are stated?
The title and size bullet say 3 m by 4 m and 0.2 mm HDPE. Product dimensions say 1 x 1 x 1 cm and 2.27 kg.
Do the bullets say it is safe for fish?
Yes. The material bullet says it is environmentally friendly and safe for fish and plants, and a later bullet calls it the preferred choice for koi ponds. No certificate is printed.
What do the six reviews say?
One beginner pond is said to have filled well. Others call it thin, hard to fold without cracking, or not stretchy. One text says a prepared pond kept emptying.
The WARM&LOVE HDPE sheet is about £6.99, with 0.1 mm and 2 m by 3 m on the title. The dimension line is 28 cm by 18 cm by 6 cm and 590 g, a packed size, not the open sheet. The amazon.co.uk line is 3.8 from 500 reviews. In 50 UK texts, leaks, holes from rocks, and comparisons to a bin bag or a rubble sack are common, including an empty pond overnight and a half-barrel leak. Other buyers say it was fine for a planter, a cover, or a small water feature. One bullet calls it a liquid pond liner. Another says it is harmless to plants and fish, and no certificate is printed. At 0.1 mm the large review set is mostly a warning about thin film.
Pros
Cons
Best for: You want a cheap cover or a planter liner, and a puncture would be a nuisance rather than a lost pond.
Less suitable: You are lining a dug pond on stones, or you read heavy duty as a thickness.
Specifications
Common questions
How thick is this sheet on the listing?
The title says thickness 0.1 mm and HDPE. The dimension line is 28 x 18 x 6 cm and 590 g, which does not restate 2 m by 3 m.
Do the bullets say it is safe for fish?
Yes. One bullet says it is completely free of pollutants and absolutely harmless to plants and fish. No certificate is printed. Another bullet calls it a liquid pond liner.
What do the UK reviews say about using it as a pond?
In the 50 texts, leaks, holes from rocks, and comparisons to a bin bag or rubble sack are common. Other buyers say it was fine for a planter, a cover, or a small water feature.
The MuAnWei 2 m by 2 m HDPE sheet is about £8.99 at a stated 0.1 mm, and the bullets add 10 fixing nails of 16 cm. The packed size is 25.6 cm by 20.4 cm by 5.2 cm and 480 g. The amazon.co.uk line is 3.7 from 108 reviews. In 19 UK texts, buyers report a gravel hole, a day-one puncture, a leak after filling, and duck damage within a month. Others say a half barrel or a water feature was fine if they were careful. The bullets also name koi ponds, and no certificate is printed. The nails are in the box, and they are not a reason to pierce the sheet that is supposed to hold the water.
Pros
Cons
Best for: You are lining a half barrel and you will keep stones and the nails off the water-holding sheet.
Less suitable: You are digging a pond on gravel, or you want the nails as the way to fix the rim.
Specifications
Common questions
What is in the box on this listing?
The specification bullet says one black 2 m by 2 m sheet at 0.1 mm and 10 fixing nails of 16 cm.
Does the packed size match 2 m by 2 m?
No. Package dimensions are 25.6 x 20.4 x 5.2 cm and 480 g. The sheet size is only in the title and bullets.
What do the reviews say about punctures?
In 19 UK texts, buyers report a gravel hole, a day-one puncture, a leak after filling, and duck damage within a month. Others say a half barrel or a water feature was fine if they were careful.
The kanghelong 2 m by 2 m HDPE sheet is about £5.99 with 0.1 mm on the title. The dimension line prints 200 cm by 0.01 cm by 200 cm and 360 g, which matches that thickness. The amazon.co.uk line is 1.0 from one review. That review says it is not heavy duty, that the pack states greenhouse film, and that it is thinner than a millimetre. The bullets name the sheet Wooview while the manufacturer line is kanghelong. A materials bullet says it is safe for fish and plants, and no certificate is printed. One review is the whole UK sample in the file, and it describes film rather than a pond sheet.
Pros
Cons
Best for: You want the cheapest 2 m square in this set for a cover, and a greenhouse-film pack would not surprise you.
Less suitable: You are buying a pond sheet on the words heavy duty, or you need more than one review.
Specifications
Common questions
How thick does the listing say the sheet is?
The title and the specification bullet say 0.1 mm HDPE. The dimension line prints 200 x 0.01 x 200 cm and 360 g.
What does the UK review say?
The only saved review says it is not heavy duty, that the pack states greenhouse film, and that it is so thin it is less than a millimetre.
Do the bullets claim it is safe for fish?
Yes. The materials bullet says it is safe and harmless to fish and plants. No certificate is printed.
The YWKJDDM listing is about £9.88 with no star line and no review texts on the listing. The package bullet says one seamless HDPE sheet, 0.2 mm, 2 m by 2 m. The title says underlay and preformed liners, and the rank is Pond Liner Underlays. Product dimensions print 30 cm by 2 cm by 0.02 cm and 750 g. 0.02 cm matches 0.2 mm, and 30 cm by 2 cm does not match 2 m by 2 m. The title ends with (2) while the package bullet says 1 piece. Fish ponds are named in the bullets, and no certificate is printed. Until a review exists, this row is a size clash and a category clash.
Pros
Cons
Best for: You only want this row if you can inspect a 2 m sheet in person before you pay about £9.88.
Less suitable: You are buying fleece because of the underlay rank, or you need any UK review.
Specifications
Common questions
Is this underlay or a liner sheet?
The title says underlay and preformed liners, and the rank is Pond Liner Underlays. The package bullet says one seamless HDPE sheet, 0.2 mm, 2 m by 2 m.
Do the size lines agree?
The bullet says 2 m by 2 m. Product dimensions say 30 x 2 x 0.02 cm and 750 g. 0.02 cm matches 0.2 mm. 30 by 2 cm does not match 2 m by 2 m.
Are there UK reviews on the listing?
No. There is no Customer Reviews line and no review text.
Twelve amazon.co.uk listings were scored from the pages captured on 21 October 2026. This is not a lab puncture test. A thickness is used only when that listing prints it. Grams per square metre are not converted into millimetres, and a 0.2 cm figure on a dimension line is not read as 2 mm. The highest score is the top pick, once. Best value, once, is the lowest price per square metre among sheets that print a thickness and do not carry a puncture cluster, on the row that is not already the top pick. The weights below sum to 100.
Amazon evidence
30%The star line on amazon.co.uk, then the review count. A 4.6 from 404 scores higher than a 4.4 from 3. A larger count does not repair a lower star line. No star line scores 0.
Listing fit
30%A stated thickness that matches the dimension line, and material words that agree, score up. Points come off when the title adds rubber, underlay or preformed to a film listing, when no thickness is printed, and when the size lines disagree.
Review outcome
25%Texts score up when a sheet is said to have held water. Points come off for a first-night puncture, a hole on arrival, a split, a join that opened, and a sheet called a bin bag or greenhouse film. Three texts are not a durability result.
Value
15%Shelf price in GBP against stated square metres and stated thickness. Thin film with repeated puncture notes does not take the value mark, even at a lower till price. About £6.72 for 1 m² is a container price, not a low price per square metre.
The right pond liner is the sheet whose stated size still covers the hole after depth and overlap, in a material you meant to buy. The twelve rows are amazon.co.uk HDPE and LDPE listings from 21 October 2026, not specialist butyl or EPDM. A star line is not a puncture test. Read the thickness, the dimension line and the review notes on holes before the price. Underlay is separate. A 25 year title is not a promise that the bullets explain.
A pond liner is the waterproof sheet that holds water in a dug or raised garden pond. The Royal Horticultural Society treats flexible butyl or PVC as the usual way to choose your own shape. Specialist shops sell EPDM or butyl at about 0.75 mm or 1.0 mm. PVC at about 0.5 mm is the cheaper plastic those shops still name. The twelve amazon.co.uk listings in this comparison are not that rubber.
Length and width need twice the depth, then an overlap. The RHS describes about 15 cm all round. AllPondSolutions uses 30–50 cm. A short sheet cannot be stretched to fit.
A GARDENIX bullet says at least 50 cm of overlap and says not to cut until the liner is full of water. Trim after the water has pulled the folds down.
Several 0.1 mm titles still say heavy duty. Saved UK reviews call those films bin-bag plastic or greenhouse film. The YWKJDDM rank says underlay while the bullet describes a 0.2 mm sheet.
Start with the hole, not the title. Measure the maximum length, width and depth. Add twice the depth to the length and to the width, then an overlap. The RHS describes about 15 cm all round. AllPondSolutions uses 30–50 cm. A GARDENIX bullet says at least 50 cm and says not to cut until the liner is full of water. Round up. A short sheet cannot be stretched to fit. Polyethylene in this set folds. It does not mould into a corner the way specialist rubber is described.
Use the thickness the listing prints. In this set that runs from 0.1 mm to 0.5 mm, plus 200 gsm claims. Do not turn grams per square metre into millimetres, and do not read 0.2 cm on a dimension line as 2 mm. Specialist rubber advice is 0.75 mm for most garden sheets and 1.0 mm for deep, stony or box-welded work. A 0.1 mm title that says heavy duty is still 0.1 mm. Several saved UK reviews of those films call them bin-bag plastic or greenhouse film.
Three typical situations, each with a recommendation from this comparison.
You have added depth and overlap, and the hole still fits a 4 m by 4 m sheet. The PondKraft tri-laminate is about £28.99, stated at 0.35 mm and at least 200 g/m², with 4.6 from 404 reviews. Saved texts include ponds that held, and also a join that opened. The 25 year line is on the title only. This set does not include specialist EPDM or butyl.
You want a low price per square metre on a sheet whose size lines agree. The Storystore 3 m by 3 m HDPE is about £14.99, stated at 0.2 mm, about £1.67 a square metre. amazon.co.uk shows 4.4 from only three reviews, and one text describes a 2 m by 2 m size. Put underlay under 0.2 mm on sharp ground.
A 1 m square is enough, and reviews of a 4 m wildlife hole are the wrong sample. The GARDENIX sheet is about £6.72, stated at 200 gsm, with no polymer name and no millimetres on the title. amazon.co.uk shows 4.3 from 165 reviews. Some small features held. Others leaked, and some of those texts name a larger size.
The top pick is the PondKraft 4 m by 4 m sheet at about £28.99. It leads on a stated 0.35 mm tri-laminate LDPE, at least 200 g/m², and 4.6 from 404 reviews. Saved UK texts include ponds that held, and also a join that opened, a short cut, and a leak. The 25 year line is on the title only. The best value is the Storystore 3 m by 3 m sheet at about £14.99, about £1.67 a square metre, because the size lines match 0.2 mm and it is not the top pick. Only three reviews name it. None of these scores is a puncture test. Specialist butyl and EPDM are not in this set.
PondKraft 4 m × 4 m pond liner
Highest score: stated 0.35 mm tri-laminate LDPE and 4.6 from 404 reviews at about £28.99, with the guarantee terms still unstated.
Storystore 3 m × 3 m pond liner
About £1.67 a square metre at about £14.99, on a 3 m by 3 m sheet whose dimension line matches 0.2 mm.
Editorial
Peter F. is the editor for DIY & tools at productscompared.co.uk. Comparisons in this category are checked against amazon.co.uk listings, review evidence and public UK sources.
Guides on what to look for, how to use a product, and common mistakes.
Public UK sources for this comparison. Listings and prices were taken from amazon.co.uk on 21 October 2026.
This page contains affiliate links to amazon.co.uk. If you buy through them, we may earn a commission at no extra cost to you. Prices, stars and review counts are from the amazon.co.uk listings. This is not a laboratory test.
