Best vapour barrier tape
Updated: October 2026
You want one roll for an internal air and vapour control layer, and you want to know which cheaper roll is only a saving if a test strip holds. Best vapour barrier tape, on this page, means the best of four amazon.co.uk listings kept for that job on 16 October 2026, not a UK-wide laboratory winner. The Products Compared editorial team used those shelf prices, the stored reviews, and the makers' UK notes. A qualifying purchase can earn a commission at no extra cost to you. The full table sits on the [vapour barrier tape comparison](/hub/site-barriers/vapour-barrier-tape).
You want one roll for an internal air and vapour control layer, and you want to know which cheaper roll is only a saving if a test strip holds.
You want one roll for an internal air and vapour control layer, and you want to know which cheaper roll is only a saving if a test strip holds. Best vapour barrier tape, on this page, means the best of four amazon.co.uk listings kept for that job on 16 October 2026, not a UK-wide laboratory winner. The Products Compared editorial team used those shelf prices, the stored reviews, and the makers' UK notes. A qualifying purchase can earn a commission at no extra cost to you. The full table sits on the vapour barrier tape comparison.
Our top picks
| Badge | Product | Listed job | Width | Roll length | Note | Price | Offer |
|---|---|---|---|---|---|---|---|
| Best overall |  tesa tesa 60077, 50 mm | Named vapour barrier tape | 50 mm | 25 m | 8.2 | about £30.84 | View offer |
 DuPont Tyvek AirGuard 1310V, 60 mm | Internal AVCL tape | 60 mm | 25 m | 8.6 | about £28.00 | View offer | |
| Best value |  Ealyder Ealyder polyethylene, 100 mm | Vapour barrier seam tape | 100 mm | 54.8 m | 6.8 | about £17.99 | View offer |
On this page
What best can mean on these listings
Best, here, means the listing describes an internal AVCL or a vapour-barrier sheet, the written reviews you can read are marked United Kingdom and talk about a membrane, and the roll is not being asked to do a duct-tape job. A high star line with no UK review text does not clear that bar.
None of these rolls is BS 5250 certified, and Approved Document C in England does not crown a tape. Top pick means top of this shelf set for an internal lap. Best value means the longer polyethylene roll only when a test strip holds, not the cheapest roll. Width and butyl are on the buying guide.
Top pick for an internal AVCL
The top pick is DuPont Tyvek AirGuard 1310V. The listing calls it a single-sided internal AVCL tape for AirGuard membranes, timber, uPVC and metal, and DuPont's UK data sheet recommends that internal use, above −5°C.
The liner is fiddly, and once the adhesive grabs it is hard to lift, so a crooked stick is a patch. If staples puncture the sheet, this roll does not replace butyl. Novia's system puts butyl in a 150 mm lap and a single-sided tape over the top. 1310V can be that cover on an AirGuard sheet. It is not the gasket. Follow the how to tape a vapour barrier steps.
The named tesa roll, and the long polyethylene roll
tesa 60077 stays because the product is named as vapour barrier tape. tesa's UK note describes a polyethylene tape and a way to collar a small cable. Hand tear is not stated. Choose it for the name and the 50 mm width if you accept that the stored review text is not marked United Kingdom.
The best value roll is the Ealyder polyethylene tape, and only with a condition. One UK review called the stick very strong when the membrane was tight, clean and dry. Two of the four say it let go: the next day under cladding, and where the sheet flexed. Buy it when the lap is flat and a test strip is still there in the morning. A loft that needs more than 25 m is the case for this length, which the loft page separates from roof ventilation.
The red roll to leave for this job
XFasten is the £11.99 roll, about 76 mm by 55 m, and a bullet states −20°C to 95°C. Leave it off the airtightness line. The title says a polymer coating and the specification says Foam. UK reviews in the file do not support the membrane claim.
Which roll to open
If the sheet is an internal AVCL, the top pick is Tyvek AirGuard 1310V. If you need more than 25 m and a morning test strip still holds, the best value is the Ealyder roll. If you want the tesa name and can accept reviews that are not marked United Kingdom, 60077 is the other specialist roll. Leave the red roll off the sheet.
Common questions
Which roll is the top pick for an internal sheet?
Tyvek AirGuard 1310V, at £28.00 for 60 mm by 25 m. The listing calls it an internal AVCL tape, DuPont's UK data sheet agrees, and the 4.7 from 87 comes with review text marked United Kingdom. Skip it if you need the lowest price per metre or you must reposition the tape after it grabs. It does not replace butyl behind staples.
Why not the 4.9-star tesa roll?
tesa 60077 is a real vapour-barrier name at £30.84, and 4.9 from 55 is the amazon.co.uk star line. The written reviews stored with that ASIN are not marked United Kingdom, so they are not evidence of a UK loft sheet. The DIN 4108-11 citation is not a UK approval. Buy it for the name and the 50 mm width, not because the stars outrank a UK review file.
Is the £17.99 roll the best value?
It is the best value in this set only if a test strip holds. Ealyder gives you 54.8 m at 100 mm for £17.99, about £0.33 a metre. Two of the four UK reviews describe lift-off on a flexing sheet and under cladding. The £11.99 red roll is cheaper per metre and is not the value pick, because UK reviews say it left the membrane.
Who should skip the red tape?
Skip XFasten if the tape is the seal on a vapour barrier or a breather membrane. UK reviews report failure on an exterior vapour barrier, overnight release from a breathable membrane, and tape that rolled off after being pressed. A stick to wet brick is a different job. The material line also conflicts: polymer coating in the title, Foam on the specification.
Is £28 for 25 m enough for a small loft?
Often not, once you count pipes, the hatch and a repair. Tyvek and tesa are both 25 m. A dormer can use that on the straight laps and still run out at the corners. The longer Ealyder roll is the length answer, with the lift-off condition above. A second specialist roll is the other answer if you want the tape the sheet maker names.
Are the Tyvek reviews actually from the UK?
The star line is 4.7 from 87 on amazon.co.uk, and the written reviews stored for this ASIN are marked United Kingdom. That is not a laboratory sample, though it is stronger than a star line whose stored text is from another country. If you still need butyl, buy that gasket as well. None of these four rolls is the butyl Novia puts inside the lap.
Related pages
Sources
Public UK sources from the research digest. Listing prices, stars, and review counts are the amazon.co.uk lines stored with these four ASINs. Page updated October 2026.
- Approved Document C — Requirement C2 and the vapour control layer (retrieved October 2026)
- BSI BS 5250:2021 — Management of moisture in buildings (retrieved October 2026)
- IKO note on BS 5250:2021 (retrieved October 2026)
- A. Proctor Group — installing air and vapour control layers (retrieved October 2026)
- Novia vapour control layers (retrieved October 2026)
- DuPont UK TDS, AirGuard tape 1310V (retrieved October 2026)
- tesa UK 60077 note (retrieved October 2026)
- Passivhaus Trust airtightness guide, June 2020 (retrieved October 2026)