The best zinc sprays, compared.
Top pick: Motip M04059 alu-zinc spray, pack of 2 Best value: Hycote XUK207 zinc primer, pack of 2 – The only listing here that prints a zinc percentage, at about £9.56 a can, still under the 80 percent zinc-rich line. Updated 16 October 2026.
Zinc spray is an aerosol that leaves a zinc-bearing film on iron or steel. You use it on a gate, a railing, a trailer fitting, a cut end or a weld burn, or as a grey primer before a topcoat. BS EN ISO 1461 is a molten-zinc dip, and these cans are paint. This comparison lines up five amazon.co.uk listings and the figures those pages actually print. Read the checks in order in the [zinc spray buying guide](/hub/occupational-safety-accessories/zinc-spray/sub/zinc-spray-buying-guide). It is not a skin spray and it is not a supplement. Those products share the search words and solve a different problem. A different aerosol in this hub, [chalk spray](/hub/occupational-safety-accessories/chalk-spray), marks a line on a site or a green.
Zinc spray is an aerosol that leaves a zinc-bearing film on iron or steel. You use it on a gate, a railing, a trailer fitting, a cut end or a weld burn, or as a grey primer before a topcoat.
18 products checked · 54 hrs invested · +18,400 readers
Swipe for more
1-2 of 5
Personal buying guide
Question 1 of 2
Do you need a zinc percentage printed on the amazon.co.uk listing?
The Motip M04059 alu-zinc twin pack is the listing to open when you want a matt silver-grey film and a heat figure that Amazon actually prints. The bullets say heat resistant to 250°C and spot-weldable, on galvanised and untreated steel, at £32.68 for two 400 ml cans. That price is the highest in the set, and the page does not print a zinc percentage or a coverage figure. The 4.7 score rests on six reviews, with two short texts in the saved listing, one mentioning decent coverage and one calling the can okay, so the stars do not describe a winter of rust. Buy it for the alu-zinc look and the printed 250°C line. Leave it if you are paying for a large review sample or for a zinc percentage you can read on the listing. A small grey repair has a cheaper grey Motip can in this set, and a printed zinc percentage is what the Hycote twin pack puts on the Amazon page.
Pros
Cons
Best for: A bright alu-zinc film on galvanised or untreated steel when the printed 250°C line is the reason you are buying.
Less suitable: A buyer who wants a zinc percentage on the listing, or who would treat a 4.7 score from six reviews as proof of durability.
Specifications
Common questions
What heat limit does this Motip listing print?
250°C.
Does the listing say it can be spot-welded?
Yes. The bullets say it can be spot-welded, on galvanised and untreated steel.
How many review texts sit behind the 4.7 score?
The headline is 6 reviews. The saved listing has two short texts: decent coverage, and "Ok". Neither describes a fault.
The Hycote XUK207 twin pack is the best value here when you want a zinc figure on the amazon.co.uk listing rather than only on a maker's website. At £19.12 you get two 400 ml cans, which is about £9.56 a can, close to the single grey Motip can, with over 60 percent zinc metal in the dry coating printed where you check out. That percentage is the only one in this set of five listings, and the stated coverage is 10 to 14 square metres. The score is 4.5 from 107 reviews, a much larger sample than the six or 22 reviews on the Motip cans. Sixty percent still sits under the 80 percent zinc-dust line used for a Zn(R) primer in ISO 12944, so buy this as a primer and a base for a later finish. Review texts include nozzles that clog and cans that would not spray after shaking, which means a blocked actuator is a known risk rather than a surprise. The Amazon file prints no heat limit, while Hycote's sheet says service up to 80°C, and that temperature belongs to the sheet.
Pros
Cons
Best for: A primer on metal, including galvanised steel named in the bullets, when you want the zinc percentage on the Amazon page and can plan a later finish.
Less suitable: A repair you need to treat as zinc-rich under ISO 12944, or a job where a clogged nozzle would stop the work.
Specifications
Common questions
What zinc level does the Hycote listing state?
Over 60 percent zinc metal in the dry coating.
Does the listing say it needs a top coat?
The bullets call it a base for later finishes and name Hycote top coats. They do not say a top coat is mandatory.
What coverage is printed, and what do reviews say about the nozzle?
Coverage is printed as 10–14 square metres. Review texts include nozzles that clog and cans that would not spray after shaking.
The OB41 listing is a £13 galvanising spray with a pack description you should read twice before you rely on it. The title says a pack of two, the item volume is 800 millilitres, and the included-components line says one 400 ml can. No zinc percentage, coverage, weld claim, or heat limit is printed, so you cannot check this can against an 80 percent dry-film figure from the Amazon page alone. The bullets describe a cold zinc formula for metal that can serve as undercoat and topcoat, while the colour lines mix yellow, grey metallic, and the word galvanized. The score is 4.5 from 39 reviews, which looks steady until the texts are read. One review reports rust through on a trailer within days, and another reports corrosion returning on plaster bead after three coats. Those two reports are a reason to pass when a stated zinc level is part of the job, even though the shelf price sits close to a single branded can.
Pros
Cons
Best for: A metal touch-up where a zinc percentage is not your buying test and you can confirm how many cans are actually in the parcel.
Less suitable: A repair you need to match to a stated zinc level, or any job where rust returning within days would be a serious failure.
Specifications
Common questions
How many cans are in this OB41 pack?
The title says pack of 2 and the item volume is 800 millilitres. The included-components line says one 400 ml can.
Does the listing state a zinc percentage?
No. The bullets call it a cold zinc formula and do not print a percentage.
What did reviewers say about rust coming back?
One review reported rust through on a trailer within days. Another reported corrosion returning on plaster bead after three coats.
The Motip M04061 is the top pick in this set for a small grey repair, provided you accept a split between Motip's own page and the amazon.co.uk listing. The listing shows a matt grey 400 ml can at £8.96, with a spot-weldable line and stated coverage of 1.25 to 1.75 square metres. It does not print a zinc percentage or a heat limit, so the maker's claim of more than 90 percent zinc share, and the 350°C figure, stay on Motip's page rather than in the Amazon bullets. The score is 4.3 from 22 reviews, and the saved listing contains only two review texts, which is too thin to judge a wet British winter. The technical lines print full cure as 2 hours and dry time as 4 hours, so those two clocks do not agree and the tin in your hand should settle the wait. Choose it when a bracket or a small patch fits inside that coverage figure and you are willing to read the maker's page for the zinc share. Leave it if you need the temperature or the percentage printed on Amazon before you pay.
Pros
Cons
Best for: A small grey repair on metal, such as a bracket or patch inside 1.25–1.75 m², when you will read Motip's own page for the zinc share.
Less suitable: Any job that needs a heat limit or a zinc percentage printed on the Amazon listing, or a film you want judged from a large set of review texts.
Specifications
Common questions
Does this Motip listing state a zinc percentage?
No. The bullets say cathodic corrosion prevention, spot-weldable, and resistance to petrol, chemicals and weather. They do not print a zinc percentage.
What coverage and dry times are printed?
Coverage is 1.25–1.75 m². Full cure time is printed as 2 hours and dry time as 4 hours.
Is a heat limit printed on the listing?
The listing asks whether it is heat resistant and does not give a temperature.
Simoniz SIMP10D is a 500 ml grey primer at £11.95, sold as weld-through on the title and the bullets, with stated coverage of 2 square metres. Two reviews say the can itself is not marked weld-through, so the tin in the parcel matters more than the Amazon title if you plan to weld over the film. The score is 3.8 from 51 reviews, the lowest in this set, and the listing prints no zinc percentage. Dry time is given as 2.0 hours and full cure as 6 hours, which at least tells you to leave the repair overnight before you lean on it. The waterproof field is printed as false, with the water line set to water resistant, so this is a narrower claim than a coating you can hose down and forget. Stated surfaces include galvanised and untreated metal, which points to a primer coat on steel you will paint or weld later. Pass on it as a weld-through purchase until the mark on the can matches the listing, and pass on it if you need a zinc percentage before you spray.
Pros
Cons
Best for: A grey primer on galvanised or untreated metal when you have checked that the tin in your hand is marked weld-through.
Less suitable: A weld you are about to strike on the strength of the Amazon title alone, or a repair that needs a printed zinc percentage.
Specifications
Common questions
Is this Simoniz can sold as weld-through?
Yes. The title, bullets and special features say weld-through. Two reviews say the can itself is not marked weld-through.
What coverage and cure times are printed?
Coverage is 2 square metres. Dry time is 2.0 hours and full cure time is 6 hours.
Does the listing say it is waterproof?
It prints Is Waterproof as false and water resistance level as water resistant.
We lined up five zinc-spray listings on amazon.co.uk and the public UK sources named below. The display file has no 0–100 editorial score, and we did not salt-spray test any can. The 1–10 figure on each card is the amazon.co.uk star rating doubled, so 4.5 becomes 9.0. It is not a lab mark. The weights follow the buying order in the digest: the zinc figure first, then heat and weld lines printed on the listing, stated coverage, the size of the review sample, and shelf price against the pack. Awards follow the display file.
Zinc figure in the dry film
30%A stated zinc level is what places a can against the 80 percent zinc-dust line for a Zn(R) primer. No percentage means the can cannot be placed on that scale.
Heat and weld claims on the listing
20%Only a temperature or a weld line the amazon.co.uk page prints counts here. A maker-page figure stays labelled as a maker-page figure.
Stated coverage against the repair
20%Seller area figures are compared as printed. A 1.25–1.75 m² claim and a 10–14 m² claim are not treated as the same film.
Amazon review sample
15%Star ratings are used with the review count and the themes in the review texts. A high score from six reviews is not treated as a durability record.
Shelf price against pack size
15%Prices are the shelf figures in the category saved listings. Splitting a twin-pack price is arithmetic, not a second offer.
Use this when you are choosing a can, not when you want a ranking repeated. The decision order is the zinc figure, clean metal, the size of the job, then any heat or weld line the tin or the listing actually prints.
Zinc spray, in this comparison, is an aerosol that leaves a zinc-bearing film on iron or steel to slow rust. You use it on gates, railings, trailers, cut ends and weld burns, or as a grey primer before a topcoat. It is not a skin spray and it is not a supplement. Those products share the search words and solve a different problem. A different aerosol in this hub, [chalk spray](/hub/occupational-safety-accessories/chalk-spray), marks a line on a site or a green. It does not coat steel.
A zinc spray search also returns skin sprays and supplements. Those are not a film for steel. Read the listing role before you pay.
Hycote's over 60 percent sits under the ISO 12944 zinc-rich line. Motip's share above 90 percent is on the maker's page, not on the Amazon bullets. They are different claims.
Galvanic contact needs clean metal. Loose rust matches rust-return reviews already on file. A weld-through title is not fume control, and two Simoniz reviews say the can itself is unmarked.
The first check is any zinc level the seller prints for the dry film. ISO 12944-5 calls a primer zinc-rich, marked Zn(R), when zinc dust is 80 percent by mass or more. The Institute of Corrosion treats about 77 percent as the typical level at which the zinc particles still contact the steel. If the listing prints no percentage, you cannot place that can on either scale. In this set only Hycote XUK207 prints one, and it says over 60 percent zinc metal in the dry coating.
Galvanic protection needs the zinc to touch clean metal. Loose rust left underneath matches failures already in the reviews, including rust through on a trailer and corrosion returning on plaster bead. The Galvanizers Association limits aerosol or brush repair to small damage, built toward about 100 µm. A garden wire-brush does less than the blast cleaning that mechanism expects, and one mist coat is not that thickness.
Three typical situations, each with a recommendation from this comparison.
You are patching a chip, a gate, a railing or a trailer fitting, and the area fits inside about 1.25–1.75 m². The grey Motip can is the small-repair pick if you will read the maker's page for the zinc share, because the listing itself does not print a percentage.
You want a zinc figure on the amazon.co.uk listing and you can plan a later finish. The Hycote twin pack prints over 60 percent zinc metal in the dry coating. That is under the 80 percent zinc-rich line, so treat it as a primer, and check a weld-through mark on the tin if you intend to weld.
You want a matt alu-zinc film and a heat figure the Amazon bullets actually print. The Motip M04059 twin pack states 250°C and spot-weldable. It does not print a zinc percentage, and the 4.7 score rests on six reviews.
The top pick is Hycote XUK207 zinc primer, pack of 2, with the highest score in this comparison (8.9 out of 10, from 107 amazon.co.uk reviews). For a zinc percentage printed at checkout, the Hycote XUK207 twin pack is the best value, with over 60 percent still under the ISO 12944 zinc-rich line and with review texts that describe clogged nozzles. Open the Motip alu-zinc twin pack when you want 250°C printed on Amazon and will pay £32.68 for a six-review sample. Pass on a weld-through title until the mark on the tin matches the listing.
Hycote XUK207 zinc primer, pack of 2
The only listing here that prints a zinc percentage, at about £9.56 a can, still under the 80 percent zinc-rich line.
Editorial
Products Compared publishes British-English buying guides based on amazon.co.uk listings and public UK sources. We do not run a lab and we do not invent test scores.
Guides on what to look for, how to use a product, and common mistakes.
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.
Expert source (DIY & tools): Charlie White (Charlie DIYte) (external profile) – public expert commentary used as a research source, not as a contributor to our pages.
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. The comparison uses those listings and the public sources below. We have not salt-spray tested these cans.
