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The range of rust inhibiting primer and undercoats for metal available at Rawlins Paints are compatible with products from the range of topcoats available by the same manufacturer (please refer to product datasheets for product combination recommendations) and provide the perfect start to any painting project. Using the correct metal primer with not only give superior adhesion, allow better coverage, and stain hiding power, it will also protect the underlying metal from rust.
It’s important to choose the right metal primer or undercoat for a project, whether you're looking for something to adhere to a difficult surface, prevent rust from forming, stabilise existing rust or a high-performance system that is going to stand the test of time we have a product suitable. Many of the primers and undercoats available from Coo-Var, International, Jotun, Sherwin-Williams and Rust-Oleum, amongst other manufacturers, have impressive certificates and approvals - including hygiene ratings, fire ratings, Network Rail approval, Highways Agency approval, London Underground approval and more. Ask our Technical Team for help in choosing the right primer or undercoat for your project.
There are 210 products.
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Hempadur Fast Dry 15560 is a two-component epoxy paint with a very short drying time, containing zinc phosphate.Complies with EU Directive 2004/42/EC, The Paints Directive on the limitation of volatile organic compounds: subcategory j Recommended use as a quick drying primer or intermediate coat in Hempadur systems for especially fast...
£160.44 (incl. VAT)
£133.70 (ex. VAT)
Teamac 2 Pack Zinc Phosphate Primer, is a two pack, high performing epoxy zinc phosphate primer for application to steel which is clean and free from scale and/or rust.For application to blast cleaned and other suitably prepared steel surfaces Dry to recoat in as little as 2 - 4 hours Up to 12 square metres per litre coverage Not...
£27.56 (incl. VAT)
£22.97 (ex. VAT)
Jotun Penguard Primer is a two component polyamide cured high molecular weight epoxy coating designed as a primer for new construction. It can be used as a primer as a part of a complete system in atmospheric and immersed environments. Suitable for properly prepared carbon steel, stainless steel, aluminium, concrete, galvanised steel, shop...
£56.63 (incl. VAT)
£47.19 (ex. VAT)
Jotun Penguard Tie Coat 100 is a two component polyamide cured high molecular weight epoxy coating specially designed as a tie coat/sealer on top of inorganic zinc silicate primers, galvanised steel and thermally sprayed zinc. To be used as a primer in a complete system in atmospheric environments. Recommended for offshore environments,...
£279.84 (incl. VAT)
£233.20 (ex. VAT)
Jotun Penguard Midcoat MIO is a two component polyamide cured epoxy coating that is a micaceous iron oxide (MIO) pigmented, high solids, high build product. Designed as a mid coat in systems for new construction in atmospheric environments. Suitable in approved coating systems.
£269.04 (incl. VAT)
£224.20 (ex. VAT)
Jotun Penguard Midcoat is suitable for structural steel and piping to be exposed to corrosive environments up to very high. Recommended for offshore environments, refineries, power plants, bridges, buildings and mining equipment. A high solids, high build product designed as a mid coat in systems for new construction in atmospheric...
£269.04 (incl. VAT)
£224.20 (ex. VAT)
Jotun Penguard HSP is a two component polyamide cured epoxy coating that is fast drying, high solids and high build. This Jotun product can be used as a primer or mid coat in atmospheric environments, specially designed for new construction where fast dry to handle and over coating times are required.
£209.47 (incl. VAT)
£174.56 (ex. VAT)
Jotun Penguard HSP ZP is a two component polyamide cured epoxy coating that is a fast drying, zinc phosphate pigmented, high solids, high build product. Specially designed for new construction where fast dry to handle and over coating times are required. To be used as a primer in atmospheric environments and is suitable for properly prepared...
£163.08 (incl. VAT)
£135.90 (ex. VAT)
Jotun Penguard HSP MIO is a two component polyamide cured epoxy coating that is a fast drying, micaceous iron oxide (MIO) pigmented, high solids, high build product. Can be used as a primer or a mid coat in atmospheric environments. Specially designed for new construction where fast dry to handle and over coating times are required. *Red,...
£210.84 (incl. VAT)
£175.70 (ex. VAT)
Jotun Penguard Express is a two component amine cured epoxy coating that is fast drying, high solids and high build. It is specially designed for new construction where fast dry to handle and over coating times are required. Can be used as a primer, mid coat, finish coat or as a single coat system in atmospheric environments.
£54.08 (incl. VAT)
£45.07 (ex. VAT)
A two component amine cured epoxy coating that is a fast drying, zinc phosphate pigmented, high solids, high build product. Specially designed for new construction where fast dry to handle and over coating times are required. Can be used as a primer, mid coat, finish coat or as a single coat system in atmospheric environments.
£72.12 (incl. VAT)
£60.10 (ex. VAT)
Jotun Penguard Express MIO is a two component amine cured epoxy coating that is a fast drying, micaceous iron oxide (MIO) pigmented, high solids, high build product. Specially designed for new construction where fast dry to handle and over coating times are required. Can be used as a primer, mid coat, finish coat or as a single coat system in...
£74.02 (incl. VAT)
£61.68 (ex. VAT)
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Suitable For Use On
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Interior / Exterior Use
Interior / Exterior Use
Single, Two or Three Pack
Single, Two or Three Pack
Min. Application Temperature
Min. Application Temperature
Dry to Recoat (@ 20-25°C)
Dry to Recoat (@ 20-25°C)
Product Usage Type
Product Usage Type
Colour Family
Colour Family
Base Type
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Rawlins Paints stock over 150 metal primers and undercoats, for any scaled project or environment – no matter how extreme the weather conditions are for external application. These range from Rust-Oleum’s CombiPrimer products for smaller surface areas, to Jotun’s Penguard, Pilot and Barrier ranges for larger surface areas in less hospitable environments – such as offshore areas. With many factors determining which primer will be best suit requirements, these may include one or more of the following:
Each product page will contain at least one datasheet documenting touch-dry times, surface preparation requirements, storage and application cleaning advice, and when the primer can have additional product coatings applied. Incorrectly applied coatings on-top of the primer/undercoat can drastically jeopardise its protective, rust-inhibiting, chemically resistant properties – so always follow application guidelines in the datasheets.
Rawlins Paints’ blog features many articles detailing how rust-inhibiting primers work, full system installations from primers to topcoats, product recommendations for specialist or unusual environments, as well as topics including how to paint on or over stainless steel.
Metal primers may not always be required on a project, but will always remain a recommendation to improve surface and substrate protection, as well as extend the lifespan of the topcoat or full system installation.
A metal primer’s primary job is to stop the metal from getting wet, or coming into direct contact with any form of moisture, damp or humidity. Whilst some metals contain anti-corrosive materials (such as the addition of zinc – which oxidises first, before the metal substrate does), without using a primer as an added precaution, over time the paint system will age and may decay or begin to deteriorate. When this happens, oxidation will begin, and can quickly lead to rust forming on the surface. Flaking and peeling paint on a surface is most commonly caused from a primer not being used. Stripping back topcoats from metal that has begun to peel can be a large and expensive task – colours may fade on larger surface areas over time, and simply treating and recoating smaller areas is not a ‘colour matching’ option.
Please note that not all metal primers are rust-inhibiting. Some provide other forms of surface protection and topcoat/system installation preparation. Red oxide primers are rust-inhibitive and should be used on ferrous metals to prevent rust and substrate surface oxidisation.
