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Best leak detection spray for a job you can name

Updated: 22 October 2026

You want one product in the toolbox, or one can for a caravan check, and the ratings refuse to agree with the labels. The best leak detection spray in this set is not the row with the most stars. It matches a job you can say out loud: a stated British Standard, a UK review file you can read, or a can for several joints if you accept the faults those reviews describe. The [leak detection spray comparison](/hub/measuring-equipment/leak-detection-spray) holds the full table from the amazon.co.uk capture on 19 October 2026. There was no lab test. A purchase through our links can earn a commission at no extra cost to you.

You want one product in the toolbox, or one can for a caravan check, and the ratings refuse to agree with the labels. The best leak detection spray in this set is not the row with the most stars.

Our top picks

Arctic Hayes Arctic Hayes PH026, 250 ml

Best overall

Arctic Hayes Arctic Hayes PH026, 250 ml
8.9/10about £4.33
View offer
Everbuild Everbuild P18, 400 ml

Alternative

Everbuild Everbuild P18, 400 ml
7.6/10about £8.38
View offer
Arctic Hayes Arctic Hayes PH026M, 120 ml

Best value

Arctic Hayes Arctic Hayes PH026M, 120 ml
8.5/10about £3.83
View offer
On this page
  1. 1.What best can mean here
  2. 2.When the Arctic Hayes bottles are the pick
  3. 3.When the Everbuild can is and is not the pick
  4. 4.Liqui Moly and Rothenberger

What best can mean here

Three criteria are doing the work, and they point at different ASINs. The first is whether the Amazon bullets state BS EN 14291:2004. Only the Arctic Hayes rows do that in this capture. The second is whether the written reviews are British and numerous enough to show a repeated fault. The third is the applicator: a brush on one thread, or an aerosol that is faster and, on the Everbuild file, often dead on arrival. Star rating is not a fourth hidden test. A bubble film does not measure a leak rate, and it does not replace a tightness test. If you smell gas indoors, stop shopping and use the emergency steps on the how to use gas leak detector spray page, including 0800 111 999.

When the Arctic Hayes bottles are the pick

The top pick is the Arctic Hayes PH026, 250 ml, captured at £4.33. The bullets say it meets BS EN 14291:2004 and that it is non-flammable and non-corrosive, including in confined areas. Amazon.co.uk shows 4.3 from 106 reviews, and the saved blocks are United Kingdom. Reviewers describe bubbles finding a leak, including on a hot tub. The brush detaches from the lid. Dirty fluid works less well. The maker’s own page says this fluid is not for oxygen, and that line is missing from the saved Amazon bullets. Choose it when you want the standard on the card and a readable UK file. Leave it if you need a spray pattern or an oxygen job. The best value is the Arctic Hayes PH026M, 120 ml, at £3.83. It states the same standard, scores 4.2 from 98, and UK reviews say it shows small leaks quickly, including an air leak after other liquids failed. It is the lowest price in the set that still prints the standard. The same reviews say the brush keeps falling off, and the size looks dear in the hand. It suits an occasional joint. The PH020 twin also states the standard, with five ratings and no review text. It is not a first can.
Arctic Hayes Arctic Hayes PH026, 250 ml

Testsieger

Arctic Hayes Arctic Hayes PH026, 250 ml
8.9/10about £4.33
View offer

When the Everbuild can is and is not the pick

Everbuild P18 is the pick when you want a 400 ml aerosol with a directional tube and the largest pile of UK writing. Captured at £8.38, it shows 4.2 from 413 reviews, and the first 50 blocks are all United Kingdom. Caravan joints are covered on the caravan gas leak spray page, if the can in your hand still has propellant. The same UK sample is why you might skip it. Reviewers describe tins that dribble, a jet of about a centimetre, and propellant gone while the can is half full. The Amazon bullets do not state BS EN 14291:2004. Buy it only if a replacement tin is easy.

Liqui Moly and Rothenberger

Liqui Moly 3350 is a 400 ml leak finder at £9.38. The 4.5 from 2,232 is a weak UK sample: five United Kingdom texts in the first 50. BS EN 14291:2004 is not stated. It is a named can if you will not quote 2,232 as UK evidence. Rothenberger RoTest, 400 ml at £10.99, names cylinders, valves, and pipe connections. The line is 4.4 from 154, with one UK review in the file. The maker’s UK page uses a DVGW mark. DVGW is not BS EN 14291. Choose it when the cylinder wording is the point. Skip it if you wanted the British Standard on the Amazon card. The shelf date remains 19 October 2026.

Common questions

Which is the best leak detection spray if I want the standard on the label?
The PH026, 250 ml at £4.33, is the top pick on that criterion. The bullets state BS EN 14291:2004, the UK review file is readable, and you get more fluid than the £3.83 PH026M. The PH020 aerosol also states the standard, with five ratings and no review text. Everbuild, Liqui Moly, and Rothenberger do not state it in this capture.
Which has the clearest UK reviews?
Everbuild has the clearest split, because the first 50 blocks are United Kingdom and they describe both real bubbles and dead cans. The Arctic Hayes brush bottles have smaller UK files that still talk about leaks and loose brushes. Liqui Moly’s headline count is larger, and the UK share of the sample is smaller.
Is Liqui Moly the best because it has 2,232 ratings?
No. The rating is 4.5 from 2,232 on amazon.co.uk, and only five of the first 50 texts are United Kingdom. The listing does not state BS EN 14291:2004. A large rating count is not a UK leak test and not a reason to ignore a thin foam comment in the non-UK notes.
Does DVGW mean the same as BS EN 14291?
No. Rothenberger’s UK product page uses DVGW wording for the RoTest. The saved Amazon bullets do not say BS EN 14291:2004. Treat them as separate claims. Only the Arctic Hayes bullets in this set state the British Standard.
Can I call any of these the safest?
No. Nothing here was leak-rate tested by us, and a bubble is not a tightness test. The top pick is the PH026 for a stated standard plus UK review text. The best value is the PH026M on price. Safer, for an indoor smell of gas, is the emergency number, not a can.

Related pages

Gas leak detector spray buying guide

Leak detection spray

How to use gas leak detector spray without missing it

Caravan gas leak spray for joints you can already see

Leak detection spray vs soapy water on a gas joint

Sources

Public UK sources from the research digest, last checked on 19 October 2026. Shelf prices and star lines are the amazon.co.uk figures captured with these six listings. The price bands are this set, not a market average.

  1. HSE: domestic gas FAQ (retrieved 19 October 2026)
  2. National Gas: emergency contacts (retrieved 19 October 2026)
  3. SGN: smell gas (retrieved 19 October 2026)
  4. Gas Safe Technical Bulletin 059 (retrieved 19 October 2026)
  5. Installer Online: tightness testing and direct purging (retrieved 19 October 2026)
  6. MOT inspection manual 6.1.3 (retrieved 19 October 2026)
  7. MOT testing guide, section D (retrieved 19 October 2026)
  8. EIGA Doc 78 (retrieved 19 October 2026)