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Micaceous Iron Oxide (MIO) Paints
Micaceous Iron Oxide (MIO) paints provide long-term protection for steel in aggressive environments, forming a dense, weather-resistant barrier ideal for industrial, marine, and infrastructure use. These high-performance coatings are commonly used as part of steel paint systems for bridges, machinery, and exposed steelwork.
PPG SigmaCover 435
PPG SigmaCover 435, two-component, high-build, micaceous iron oxide-pigmented, polyamide-cured recoatable epoxy coating. Used as a buildcoat or finish in protective coating systems, for steel and concrete structures exposed to atmospheric land or marine conditions, curing at temperatures down to -10°C (14°F). A high relative humidity...
Sherwin-Williams Macropoxy K267
Sherwin-Williams Macropoxy K267 (formerly known as Epigrip K267/Transgard TG121) is a two-pack, pigmented with micaceous iron oxide, designed as an intermediate coat in conjuction with Macropoxy high performance primers.
Teamac Micaceous Iron Oxide
Available in Silver Grey. Protective paint, designed to provide anti-corrosive protection for steel surfaces. For structural steel, including buildings, bridges, and other metal surfaces. Usable as a finishing coat, or overcoatable with a topcoat.
Jotun Penguard Express MIO
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...
Flag Anti Rugine (MIO) Anti-Rust Paint
Flag Anti Rugine (MIO) Anti-Rust Paint is a high quality one coat anti-rust metal paint based on Micaceous Iron Oxide. It is a high build primer and/or finish suitable for either brushing or spraying purposes. Ideal for both interior and exterior applications Provides excellent adhesion to ferrous metals and imparts good water resistance...
International Interplus 356
International Interplus 356 is a low VOC, two component, internally flexibilised, high build, low temperature curing (down to -5°C, 23°F), surface tolerant epoxy primer, metallic pigmented with aluminium and lamellar micaceous iron oxide for increased corrosion resistance. A high performance maintenance coating for use on a wide variety of...
Tor HB Micaceous Iron Oxide
Tor HB Micaceous Iron Oxide, a high build anti-corrosive coating for structural steelwork on structures such as cranes, bridges, gantries, tanks, etc. Apply by spray or brush Brush application will only achieve 45 to 70 microns dry film thickness 2 colours available Touch dry in 2 hours Overcoat after 16 hours Micaceous oxide of...
International Intercure 200
International Intercure 200 is a two component epoxy zinc phosphate/micaceous iron oxide primer, formulated on proprietary polymer technology, which provides rapid cure and overcoating even under low temperature conditions. A high solids, low VOC product. As a primer for steelwork intended for use in a wide range of aggressive environments,...
International Intercure 384
International Intercure 384 is a two component, high solids, low VOC epoxy micaceous iron oxide intermediate coating offering excellent barrier protection, low temperature cure and rapid overcoating properties. Pigmented with micaceous iron oxide to comply with the requirements of BS5493:1977 As a high build intermediate to provide...
Zinga Zingaceram HS
Zingaceram HS (Formerly Zingaceram EP MIO HS), a high solid 2 pack intermediate coat to be applied as a sealer over Zinga. The coating has been used on both structural steelwork (for multi-million pound projects) and on sub-sea pipelines. 2 pack system Seals Zinga with good compatibility Apply by brush, roller, conventional sprayer or by...
Sherwin-Williams Macropoxy 267
Macropoxy 267 (formerly known as Sherwin-Williams Macropoxy C267V3 and as Epigrip C267V3) is a high solids 2-pack epoxy, pigmented with micaceous iron oxide. It is used as an undercoat in conjunction with high performance primers. Macropoxy 267 has excellent resistance to moisture, aliphatic solvents, abrasion, alkali spillage, weather and...
International Intercure 200HS
A fast drying reputation isn`t all International Intercure 200HS is renowned for. Complete with MIO, this fast cure anti-corrosive primer/intermediate with added barrier protection, can improve your productivity and lower your solvent emissions. Primer and intermediate in just one coat Rapid recoat times Low temperature cure, cures down...
International Intergard 475HS
International Intergard 475HS is a low VOC, high solids, high build, two component epoxy coating. Available with conventional pigmentation, or alternatively can be pigmented with micaceous iron oxide to provide enhanced overcoating properties. High solids epoxy intermediate Micaceous Iron Oxide variant for additional barrier protection...
International Intercure 324
International Intercure 324 is a two component, high solids, low VOC, epoxy zinc phosphate/micaceous iron oxide primer. Excellent barrier protection Low temperature cure and Rapid overcoating properties Pigmented with zinc phosphate anti-corrosive pigment to comply with the requirements of BS5493:1977
Hempel Hempadur MIO 47950
Hempadur MIO 47950 is a two-component polyamide adduct cured, high build epoxy paint which combines a relatively high volume solids content with a short drying time. Has a high load of MIO-pigment. For professional use only For use as an intermediate or finishing coat in epoxy systems in atmospheric exposure Service temperature: up to...
Tikkurila Temacoat GPL-S MIO
Tikkurila Temacoat GPL-S MIO is a two-component, polyamide cured epoxy paint pigmented with micaceous iron oxide, with superior adhesion to steel surfaces forming a very strong and durable film that can be used as a primer or an intermediate coat in aggressive environments Fast cure and low-temperature cure hardeners available - click to...
International Intergard 400
International Intergard 400 is a high build, two component epoxy, pigmented with lamellar micaceous iron oxide for enhanced corrosion resistance and improved overcoating properties after ageing.
Hempel Hempadur Speed-Dry ZP 500
Hempadur Speed-dry ZP 500 is an epoxy paint which combines high volume solids with a short drying time and optimised properties for shop application of full coating systems. It contains zinc phosphate for better corrosion protection. Suitable for onshore corrosion protection of new-build steel and constructions where fast to handle and...
Jotun Penguard HSP MIO
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,...
International Intercure 420
International Intercure 420 is a two component, high solids, low VOC epoxy micaceous iron oxide coating formulated on proprietary polymer technology which provides rapid cure and overcoating even under low temperature conditions. Excellent barrier protection as part of a high performance system Suitable for use in aggressive environments...
Tikkurila Temacoat SPA Primer MIO
Tikkurila Temacoat SPA Primer MIO, a two-component resin modified epoxy paint containing micaceous iron oxide, used as a primer or an intermediate coat on surfaces exposed to climatic, mechanical and chemical stress. Good adhesion to steel, zinc and aluminium surfaces Recommended for building frameworks, tubular bridges, conveyors and...
Carboline Carboguard 890 MIO
Carboline Carboguard 890 MIO is a highly chemical resistant epoxy mastic coating with exceptionally versatile uses in all steel and concrete industrial markets. Excellent chemical resistance Surface tolerant characteristics Self-priming Available in 350+ colours, including RAL and BS Please note: Colours are sold in the nearest tin...
Carboline Carboguard 893 MIO
Carboline Carboguard 893 MIO is a two-component, high solids corrosion resistant primer or intermediate coat on concrete, steel and (in)organic zinc primers. Excellent corrosion protection Excellent film build and edge protection Used as a primer or an intermediate coating Good abrasion resistance VOC compliant to current AIM...
Tikkurila Temacoat SPA MIO
Temacoat SPA MIO, a two component, polyamide-cured epoxy paint, pigmented with aluminium, micaceous iron oxide and zinc phosphate. Good adhesion to steel, zinc and aluminium surfaces Used as a primer or as an intermediate coat in epoxy and polyurethane systems exposed to severe climatic conditions, abrasion, splashes and chemical dust...
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Micaceous Iron Oxide Paints for High-Performance Steel Protection
Micaceous Iron Oxide (MIO) paints are advanced protective coatings formulated to defend steel against the damaging effects of weather, salt spray, and chemical exposure. Their distinctive flake-like iron oxide structure creates a tight, interlocking film that resists moisture penetration and UV degradation far more effectively than standard finishes. This makes MIO a trusted choice across marine environments, industrial plants, and infrastructure applications where corrosion must be controlled long-term. These paints are frequently used in combination with metal primers to provide a robust underlayer before topcoating.
Ideal for structural steel, tanks, bridges, and other exposed metal assets, MIO paints are compatible with a wide range of metal paints, including epoxy and polyurethane systems. They’re often applied as intermediate or mid-coats in multi-layer protective systems, adding durability and extending service life—especially in marine, coastal, or chemical-rich environments. Some formulations also offer added heat resistance or immersion tolerance, making them suitable for more demanding conditions like power stations or offshore installations. With a textured finish and exceptional barrier properties, MIO coatings offer both functional protection and aesthetic value for high-risk steel structures.
MIO Paint FAQs
What makes Micaceous Iron Oxide paints different from standard metal primers?
MIO paints contain layered iron oxide flakes that create a dense, shield-like film over steel surfaces, offering superior resistance to moisture, salt, and chemicals compared to conventional primers.
Where should MIO paints be used?
They’re ideal for use on exposed structural steel—such as bridges, offshore platforms, power plants, and industrial equipment—particularly where corrosion risk is high and long-term durability is essential.
Can MIO paint be used on non-metal surfaces?
These coatings are designed specifically for metal, especially steel. While some may adhere to other materials with suitable primers, they’re most effective on metal surfaces prone to corrosion.
Is Micaceous Iron Oxide a heat-resistant paint?
Many MIO coatings are heat resistant and suitable for high-temperature environments like turbines or industrial pipework, but always check product data sheets for specific temperature ratings.
How long does MIO paint last once applied?
When applied correctly and used within a full system including primers and topcoats, MIO paints can protect steelwork for 10–20 years or more, depending on exposure and maintenance conditions.