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Metal Primers & Undercoats

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 37 products.

Showing 1-12 of 37 item(s)

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  • Brand: Hempel

Hempel Hempadur Fast Dry 15560

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...

Price £133.70 (ex. VAT)
In Stock and Available for Delivery

Hempel Shopprimer E 15275

Hempel Shopprimer E 15275 is a two-component epoxy polyamide shopprimer, pigmented with zinc phosphate rust-inhibiting pigments. It is designed for automatic spray application.For professional use only Shopprimer for protection of blast cleaned steel plate and other structural steel during the storage and building period Complies with...

Price £133.70 (ex. VAT)
In Stock and Available for Delivery

Hempel Hempadur 15590

Hempadur 15590 is a two-component epoxy primer coating especially for use on surfaces exposed to severe abrasion.For professional use only Blast primer for heavy duty epoxy systems on submerged and non-submerged areas according to specification Air or airless spray application, for new builds, maintenence and repairMore Information...

Price £174.20 (ex. VAT)
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Hempel Shopprimer ZS 15890

Hempel Shopprimer ZS 15890 is a two-component, solvent-borne zinc ethyl silicate shopprimer, designed for automatic spray application. Especially suited, where welding and gas-cutting properties are of importance.For short to medium-term protection of abrasive blast cleaned steel plates and other structural steel during the storage,...

Price £194.84 (ex. VAT)
In Stock and Available for Delivery

Hempel Galvosil 15700

Hempel Galvosil 15700 is a solvent-borne, self-curing, inorganic zinc rich silicate primer with outstanding resistance against weathering and abrasion.Offers excellent galvanic protection of local mechanical damage and has excellent chemical resistance within the pH range 6-9 Recommended as a general purpose, heavy-duty, rust-preventing...

Price £216.48 (ex. VAT)
In Stock and Available for Delivery

Hempel Zinc Primer 16490

Hempel Zinc Primer 16490 is a one-component, high molecular weight, quick drying, phenoxy coating with a high content of zinc.For professional use only For use as a protective primer on steel in severely corrosive environment, for repair of Galvosil and other zinc rich coatings, and galvanized steel In compliance with SSPC-Paint 20, type...

Price £67.47 (ex. VAT)
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Hempel Hempadur Zinc 17360

Hempadur Zinc 17360 is a two-component, zinc rich epoxy primer, that cures to a hard wearing and highly weather-resistant coating and offers cathodic protection of local mechanical damage.V.O.C.-compliant, versatile, long-term primer on steel for epoxy, vinyl and acrylic coating systems in medium to severely corrosive environments...

Price £268.74 (ex. VAT)
In Stock and Available for Delivery

Hempel Hempadur Fast Dry 17410

Hempadur Fast Dry 17410 is an epoxy paint, which combines high volume solids with a short drying time.For professional use only Contains zinc phosphate for better corrosion protection Suitable for onshore corrosion protection of new-build steel constructions where fast to handle and short overcoating times are required, such as steel for...

Price £135.63 (ex. VAT)
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Hempel Hempadur Quattro 17634

Hempadur Quattro 17634 is an epoxy primer which cures to a hard and tough coating with good resistance to seawater and various oils.Good resistance to abrasion and has excellent anticorrosive and mechanical properties ideal for application in newbuilding, in ballast tanks, cargo oil tanks and cargo holds EC-type examined as a low flame...

Price £194.84 (ex. VAT)
In Stock and Available for Delivery

Hempel Hemucryl Primer Hi-Build 18032

Hemucryl Primer HI-Build 18032 is a water-borne, acrylic dispersion paint with good anticorrosive properties. Especially suited for application by airless spray.Complies with EU Directive 2004/42/EC, the Paints Directive on the limitation of volatile organic compounds: subcategory i Use as a primer in water-borne paint systems on interior...

Price £58.26 (ex. VAT)
In Stock and Available for Delivery

Hempel Hemudur 18500

Hemudur 18500 is a water-borne two-component polyamine cured epoxy primer containing zinc phosphate as corrosion inhibiting pigment.Cures to a strong and rust-preventing coat, for use as a general purpose primer on steel constructions Complies with EU Directive 2004/42/EC, The Paints Directive on the limitation of volatile organic...

Price £334.26 (ex. VAT)
In Stock and Available for Delivery

Hempel Hempadur 35560

Hempadur 35560 is a solvent free, high-build, polyamine adduct cured epoxy paint, which cures to a coating with good resistance to fresh water.Recommended as a lining in potable water tanks and pipelines and as a self-primed, high-build coating primarily for areas subject to abrasion and/or to a highly corrosive environment; e.g. splash...

Price £274.31 (ex. VAT)
In Stock and Available for Delivery

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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)

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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:

  • Heat resistant surface requirements
  • Full anti-corrosive or chemically resistant system installation
  • Minimum business downtime on a maintenance or extension build
  • A new, submerged environment installation
  • Surface rust present
  • Exposure to high winds, rain, damp/moisture, or sunshine/UV
  • Flexibility and extra durability to protect against light vehicular traffic

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.

When to Use Metal Primers

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.