Epoxy coating

  • Corrosion protective
  • Wear resistant
  • 2-component
  • Solvent-borne
  • Primer

INERTA MASTIC MIOX is a two pack MIOX-pigmented epoxy paint with low solvent content. Grey and red colour contain aluminium pigment in addition to MIOX pigmenting.

Used for repairing existing coating systems on steel when environmental conditions do not allow blast-cleaning and for brush application when a dense coat is required in a single operation. The paint is also suitable for application in engineering shops. Good adhesion to wire-brushed steel. Good resistance to chemicals and water. Provides good adhesion to top coats. For the product there is also available a WINTER-hardener INERTA MASTIC WINTER HARDENER, which is used when the painting is done in temperatures below +10°C. The paint comes up to the specifications of Swedish Standard SSG 1021-GK.

Surface preparation

Remove from the surfaces any contaminants that might be detrimental to surface preparation and application. Remove also water-soluble salts by using appropriate methods. The surfaces are prepared according to the different materials as follows: STEEL SURFACES: Remove mill scale and rust by blast cleaning to preparation grade Sa 2½ (standard ISO 8501-1). Roughening the surface of thin-plate improves the adhesion of the paint to the substrate. ZINC SURFACES: Hot-dip-galvanized steel structures that are exposed to atmospheric corrosion can be painted if the surfaces are sweep blast-cleaned (SaS) till matt all over. Suitable cleaning agents are, e.g. aluminium oxide and natural sand. It is not recommended according to standard ISO 12944-5 to paint hot-dip-galvanized objects that are subjected to immersion strain. Painting of hot-dip-galvanized objects that are subjected to immersion strain must be discussed separately with Teknos. If it is needed to paint zinc surfaces at low temperatures, we recommend using INERTA MASTIC WINTER-01 HARDENER as a hardener. OLD PAINTED SURFACES SUITABLE FOR OVERCOATING: Any impurities that might be detrimental to the application of paint (e.g. grease and salts) are removed. The surfaces must be dry and clean. Old, painted surfaces that have exceeded the maximum overcoating time are to be roughened as well. Damaged parts are prepared in accordance with the requirements of the substrate and the maintenance coating. From the bare steel surfaces the rust is removed to preparation grade at least St 2 (ISO 8501-1). An alternative method to dry cleaning is high-pressure water jetting with a pressure of over 70 MPa. This water-jetting can be used on intact, well adhering paint coats and/or on steel. After the water jetting the intact paint coats must have a rough surface structure. The cleanliness of the steel surface must be Wa 2 (ISO 8501-4:2006) or according to the specification. A flash-rust degree of maximum M (ISO 8501-4:2006) is allowed before application. The place and time of the preparation are to be chosen so that the prepared surface will not get dirty or damp before the subsequent treatment. Additional instructive information for surface preparation can be found in standards EN ISO 12944-4 and ISO 8501-2. Prefabrication primer: KORRO E Epoxy, KORRO SE Zinc Epoxy and KORRO SS Zinc Silicate Prefabrication Primers can be used, when required.


MIXING OF THE COMPONENTS: Take into consideration the pot life of the mixture when estimating the amount to be mixed at a time. Before application the base and hardener are mixed in right proportion. Stir thoroughly down to the bottom of the vessel. Mixing by machine is recommended, for example a slow-rotating hand-drill equipped with a mixer. Inadequate stirring or incorrect mixing ratio results in imperfect curing and impaired film properties. Apply by paint brush or roller. Airless spraying is possible for painting blast-cleaned steel. For MIOX-pigmented paint use spray nozzle 0.017 - 0.021" and filter 0.315 mm (50 mesh). The product can also be used alone without a top coat.

Application conditions

The surface to be treated must be dry. During the application and drying period the temperature of the ambient air, the surface and the product shall be above +10°C and the relative air humidity below 80%. Additionally, the temperature of the surface to be treated and the product must be at least +3°C above the dew point of the ambient air. When using INERTA MASTIC WINTER HARDENER the temperature of the ambient air and the surface to be painted shall be over -5°C. The temperature of the paint during mixing and application shall be above +15°C.


The storage stability is shown on the label. Store in a cool place and in tightly closed containers.
Total mass of solids abt. 1300 g/l
Volatile organic compound (VOC) abt. 210 g/l
Pot life 2 h (+23 °C)
Mixing ratio 2:1 by volume (comp. A : comp. B)
Gloss Semi-matt
Practical spreading rate The values depend on the application technique, surface conditions, overspray, etc.
Drying time – dust free 4 h / 3 h (ISO 9117-3:2010)
Drying time – touch dry 6 h / 5 h (ISO 9117-5:2012)
Drying time – fully cured 7 d / 7 d
Thinner TEKNOSOLV 9506
Clean up TEKNOSOLV 9506. Wash the equipment immediately after use.
Colours Grey, red and sandy. Grey and red colour contain aluminium pigment in addition to MIOX pigmenting.
Safety markings See safety data sheet.
Approvals & certificates SSG 1021-GK