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Zinc spray buying guide

Updated: 16 October 2026

You are choosing a can for a steel gate or a cut end, and the aerosols on amazon.co.uk all say zinc. This zinc spray buying guide is the order to read the listing: zinc in the dry film, the preparation you can do, then heat, the weld claim, coverage, and how many cans the page describes. The [zinc spray comparison](/hub/occupational-safety-accessories/zinc-spray) holds the product table. Who each can is for sits on [best zinc spray](/hub/occupational-safety-accessories/zinc-spray/sub/zinc-spray-best). We read these listings on 15 October 2026 and did not spray the cans in a lab. A qualifying purchase through our links can earn a commission at no extra cost to you.

You are choosing a can for a steel gate or a cut end, and the aerosols on amazon.co.uk all say zinc.

Our top picks

Motip Motip M04059 alu-zinc spray, pack of 2

Best overall

Motip Motip M04059 alu-zinc spray, pack of 2
9.4/10about £32.68
View offer
Hycote Hycote XUK207 zinc primer, pack of 2

Best value

Hycote Hycote XUK207 zinc primer, pack of 2
9.0/10about £19.12
View offer
Motip Motip M04061 zinc spray 400 ml

Rank 3

Motip Motip M04061 zinc spray 400 ml
8.6/10about £8.96
View offer
On this page
  1. 1.What you are actually buying
  2. 2.The zinc figure, if the seller prints one
  3. 3.Heat, weld claim, coverage, and pack
  4. 4.A short decision

What you are actually buying

The can is a paint film you apply on site. Hot-dip galvanising immerses the article in molten zinc, and the coating you specify for that job is batch galvanising to BS EN ISO 1461. The European General Galvanizers Association states that a zinc-rich paint is a different coating from that dipped specification. Buy the aerosol for a small repair you can reach with a can, and ask a galvaniser when the steel still needs a full coating. A grey aerosol and a bright new-galvanising aerosol can be different films. Action Can's ZG-90, outside this set, is stated as non-conductive, so a colour match is a separate decision from sacrificial zinc. Institute of Corrosion notes put galvanic contact at roughly 77 percent zinc, and ISO 12944 at 80 percent for a Zn(R) primer. The next check is the percentage the seller actually prints.

The zinc figure, if the seller prints one

Zn(R), in the ISO 12944-5 sense quoted by the Institute of Corrosion, means at least 80 percent zinc dust by mass in the dry film. In this set of five, only the Hycote XUK207 twin pack states a percentage on the listing: over 60 percent zinc metal in the dry coating, at £19.12 for two 400 ml cans. Sixty percent is under that 80 percent line. Buy it as a primer and a base for a later finish, not as a zinc-rich film under that definition. Motip's own page for the grey spray states more than 90 percent zinc share. The amazon.co.uk listing for the M04061, at £8.96, does not print that percentage. The alu-zinc Motip listing, the OB41 pack, and Simoniz print no zinc percentage at all.
Motip Motip M04059 alu-zinc spray, pack of 2

Testsieger

Motip Motip M04059 alu-zinc spray, pack of 2
9.4/10about £32.68
View offer

Heat, weld claim, coverage, and pack

Use a printed temperature when the steel gets hot. The alu-zinc Motip listing prints 250°C at £32.68 for two cans. The grey Motip listing prints no temperature, while the maker's page says 350°C. Hycote's sheet says service up to 80°C, and the Amazon listing does not. Simoniz is sold as weld-through at £11.95, and two of the 51 reviews say the tin is not marked that way. Grey Motip states coverage of 1.25 to 1.75 square metres, and Hycote states 10 to 14. Ambersil's sheet, outside this set, ties coverage to a 40 micrometre film, so those square-metre claims are not comparable. The OB41 title says a pack of two and the contents line says one 400 ml can.

A short decision

Stop at the first check that fails the job you have. If you need a zinc percentage on the Amazon listing, only Hycote prints one here, and it is over 60 percent, under the 80 percent Zn(R) line. If you accept the maker's statement of more than 90 percent zinc share and the patch is small and grey, the £8.96 Motip can is the listing. If you will weld, read the tin, because a Simoniz title and two reviews already disagree. You still need clean, dry metal, with loose rust taken off. The spray sequence is on how to use zinc spray.

Common questions

What zinc percentage should you look for?
Look for a zinc figure in the dry film, and use 80 percent zinc dust by mass as the Zn(R) line in ISO 12944 if you want a zinc-rich primer in that sense. The Institute of Corrosion puts galvanic contact nearer 77 percent. In this amazon.co.uk set, only Hycote prints a percentage, over 60 percent, so treat it as a primer figure.
Is over 60 percent the same as more than 90 percent zinc share?
They are different claims from different places. Hycote's amazon.co.uk listing says over 60 percent zinc metal in the dry coating. Motip's own page says more than 90 percent zinc share for the grey spray, and the Amazon listing does not repeat it. Sixty percent sits under the 80 percent Zn(R) line. A maker's 90 percent share is only as useful as the page you trust.
Does a bright, new-galvanising colour mean the film is sacrificial?
A bright film can copy the colour of new galvanising and still do little sacrificial work. Sacrificial protection needs zinc in contact with clean steel. Action Can's ZG-90, outside this set, is stated as non-conductive. The alu-zinc Motip listing prints 250°C and no zinc percentage. Shine is a finish, not the protection check.
How do you read coverage when one can says 1.25 to 1.75 square metres and another says 10 to 14?
Read both as the seller's claim, and do not rank them until a film thickness is stated. Grey Motip states 1.25 to 1.75 square metres, and Hycote states 10 to 14. Ambersil's sheet, outside this set, ties about 0.4 to 0.8 square metres to a 40 micrometre film. Use the square-metre line to see whether one can can cover your patch.
Should a weld-through title be trusted if reviewers say the tin is unmarked?
Read the can in your hand. Simoniz is sold as weld-through at £11.95, and two of the 51 reviews say the tin is not marked that way. If you will weld, the mark on the tin is the fact that counts. Welding coated steel is also a fume-control job, so the title does not close the safety side.

Related pages

Zinc spray for galvanised steel

Zinc spray

Best zinc spray UK: the listing that fits your job

How to use zinc spray: clean steel, then thin coats

Zinc spray vs galvanising: a site can or a hot dip

Sources

Public sources named in the research digest. Shelf prices and review counts are from the amazon.co.uk saved listings for these five ASINs, not a live re-check on 16 October 2026.

  1. Galvanizers Association — Repair of galvanized steel (retrieved 16 October 2026)
  2. Galvanizers Association — Galvanized coating repair and renovation (retrieved 16 October 2026)
  3. Health and Safety Executive — Health risks of welding (retrieved 16 October 2026)
  4. Health and Safety Executive — Mild steel welding fume (retrieved 16 October 2026)
  5. Motip — Zinc spray (retrieved 16 October 2026)
  6. Hycote — Zinc primer technical sheet (retrieved 16 October 2026)
  7. Institute of Corrosion — Ask the expert (retrieved 16 October 2026)
  8. CLP Regulation, Annex III — hazard statements including H222 (retrieved 16 October 2026)