Description
Isopon Zinc 182 Rust Inhibiting Primer – Grey
Isopon Zinc 182 is a high-performance anti-rust primer designed to stop corrosion in its tracks and provide a tough, long-lasting base for paint. Packed with zinc for superior protection, it’s ideal for use on cars, trailers, agricultural equipment, metal gates, railings and general steelwork where rust is a problem.
Engineered by U-POL’s Isopon range, Zinc 182 chemically inhibits rust formation and adheres strongly to bare metal, previously painted surfaces and even lightly rusted steel (once properly prepared). It can be over-painted with most topcoats, making it a versatile solution for both DIY users and professionals.
Key Features & Benefits
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Powerful rust inhibition
Formulated with active zinc pigments that help prevent corrosion and stop rust from spreading underneath the paint film. -
Excellent adhesion to metal
Designed for bare steel and lightly rusted surfaces, providing a solid, long-lasting key for topcoats. -
Durable, hard-wearing base
Once cured, Zinc 182 forms a tough, chip-resistant coating that withstands everyday knocks, road grime and weather exposure. -
Compatible with most paint systems
Can be overcoated with cellulose, acrylic, synthetic and 2K paints (check system compatibility on a small area first). -
Fast drying
Touch-dry typically within 20–30 minutes (depending on film thickness, temperature and airflow), helping speed up your repair process. -
Ideal for automotive and general use
Suitable for bodywork repairs, chassis, panels, trailers, machinery, garden furniture, gates and railings.
Typical Uses
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Automotive body panels and repair areas
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Chassis, sills and underbody components (when top-coated appropriately)
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Metal gates, railings and garden structures
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Agricultural and construction equipment
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General steelwork in workshops, garages and sheds
Surface Preparation
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Clean – Remove all dirt, grease, oil, wax and road film with a suitable degreaser.
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Remove loose rust & paint – Wire brush, sand or grind to remove loose/flaky rust and old paint.
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Feather edges – Sand surrounding paint to a smooth feathered edge for a seamless repair.
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Dry & dust-free – Ensure the surface is completely dry and free from dust before priming.
Proper preparation is essential for maximum adhesion and rust protection.
Application (Aerosol Version)
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Shake well – Shake the can vigorously for at least 2 minutes after the mixing ball begins to rattle.
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Test spray – Try on a scrap surface to check spray pattern and compatibility.
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Spray distance – Hold 20–30 cm from the surface.
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Apply light coats – Use several light, even coats rather than one heavy coat to avoid runs and ensure even coverage.
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Flash-off time – Allow a few minutes between coats as per can instructions.
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Drying time – Touch-dry typically within 20–30 minutes; allow recommended time before sanding or over-coating.
Overcoating
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Ensure the primer is fully dry before applying topcoat.
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Can be over-painted with most solvent-based and 2K automotive paints.
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For best results, lightly sand with fine abrasive (e.g. P400–P600) and remove dust before top-coating.
Coverage & Sizes
Isopon Zinc 182 is available in a range of sizes, commonly including:
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500ml aerosol – ideal for quick repairs and hard-to-reach areas
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250ml, 1L and 2.5L tins – suited to larger panels, gates, trailers and machinery
Approximate coverage and exact sizes vary by pack – see product label or your chosen size for specific details.
Colour & Finish
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Colour: Grey
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Finish: Matt/low sheen primer finish, designed to be overcoated – not a final topcoat.
Suitable Substrates
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Bare steel and iron
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Lightly rusted steel (properly prepared)
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Previously painted metal (sound, well-keyed coatings)
Not recommended for galvanised steel, aluminium or non-metallic substrates unless specifically pre-treated with an appropriate etch or adhesion promoter.
Safety & Handling
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Use only in a well-ventilated area.
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Avoid breathing spray/mist – consider using suitable respiratory protection.
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Wear gloves and eye protection to avoid skin and eye contact.
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Keep away from heat, sparks and open flames – aerosol is highly flammable.
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Keep out of reach of children.
Always read the full safety and usage instructions on the tin or aerosol before use.
