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Industrial Coatings
Carboxide Grey Oxide Primer is a traditional (Lead Free), high build, solvent borne, air drying primer.
£5.51 – £118.67Price range: £5.51 through £118.67 ($7.44)
Grey Oxide Metal Primer Paint is an alternative option to the more traditional (lead free) Red Oxide Primer and is solvent based and air drying. It creates a smooth, protective surface to your metal. This means it is easy for you apply your top coat without too much sanding. Use it on ferrous metal surfaces.
With its rust inhibiting properties and because it is touch dry in 3 hours, Carboxide Grey Oxide Primer Paint is a great, practical choice for steel and iron surfaces. Make sure the paint cures sufficiently before applying a top coat; see the technical information for more details on this.
Carboxide grey oxide metal primer is lead free and replaces the traditional ‘red lead’ with all the same protective qualities. Red lead, while not actually banned is harmful to health and our grey oxide is a much safer alternative. If you’re concerned about working with painted surfaces that may contain lead, refer to this guide from the British Coatings Federation
Apply by brush, roller or conventional or airless spray. If painting non ferrous or galvanised metal, use Mordant Solution or Etching Primer. If you’re unsure about which primer to use, try our online chat or drop us an email: [email protected].
Also available in Black and Red.

Please allow 1-2 working days for next day delivery of 10L & 20L items. This is due to the operation times of the hazardous goods vehicles of the external couriers.
Colours Available: Grey (Also available in Black and Red).
Pack Sizes: 500ml, 1 Litre, 2.5 Litre, 5 Litre, 10 Litre, 20 Litre.
Surface Dry: 3 hours
Hard Dry: 8 hours
Overcoat: after 24 hours. Keep coated areas dry for a minimum of 24 hours following application. Please note, drying times will be extended at low temperatures. Do not apply when ambient temperature falls below 10ºC.
Theoretical Coverage: 12 – 14m² per litre.
(Coverage rate can be affected by such variables as type and condition of substrate, type of application equipment and individual method of application.)
Thinning: Dilute no more than 15% with White Spirit (if required for spray application).
Cleaning: Clean all equipment immediately after use with White Spirit.
If using more than one batch of the same colour, intermix before use.
Q: What is the main purpose of Carboxide Grey Oxide Primer?
A: This is a high-build, solvent-borne, air-drying primer designed to provide a smooth and protective rust-inhibiting layer for ferrous metal surfaces.
Q: Is this product a safe alternative to traditional metal primers?
A: Yes, this grey oxide primer is lead-free and acts as a safer, modern alternative to the traditional “red lead” primers while offering the same protective qualities.
Q: Which types of metal can I use this primer on?
A: It is specifically designed for use on ferrous metals such as steel and iron to prevent rust and provide a solid base for a topcoat.
Q: Can it be used on galvanised or non-ferrous metals?
A: This primer is not suitable for non-ferrous or galvanised surfaces; for those materials, you should use a Mordant Solution or an Etching Primer instead.
Q: What should I use to thin the paint or clean my brushes?
A: Since this is a solvent-based primer, you should use a suitable white spirit or solvent cleaner for all thinning and cleaning tasks.
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Nicholas Irving (verified owner) –
Really good quality paint! Really easy to apply by brush, best primer I’ve used!