Rust-Oleum (Rustoleum) CombiColor Original Metal 7300-7400 Paint

The #1 interior/exterior metal paint providing years of rust and colour protection in minutes. 

  • Available in 4,400+ colours, including Metallics

  • Apply to bare, manually derusted or ready primed mild steel

  • Primer and metal topcoat in one

  • Interior/exterior use

  • Sag resistant - leaves no brush/roller strokes

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  • Regular price £10.35
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Rust-Oleum CombiColor Original is a primer and topcoat in one for interior and exterior use on bare metal, manually de-rusted metal, surfaces primed with Rust-Oleum 3369/3380 CombiPrimer Anti-Corrosion, or previously painted surfaces. Rust-Oleum CombiColor has excellent opacity (hiding power) and sag resistance, leaving no brush or roller strokes, and provides good drying properties even at low temperatures.

Rust-Oleum CombiColor is a one coat maintenance system for metal, providing superior metal protection, even when applied direct to rust. It remains flexible and does not become brittle or flake with movement. Rust-Oleum CombiColor is intended for brush and roller application and can also be applied by air spray.

CombiColor Colours Available

There are 4,400+ different colours available from CombiColor's colour chart available to buy here. Please select the colour/shade above when making your order, and if there is a colour you require which is not listed such as RAL, BS and NCS colours, please contact our customer support team on 0113 2455450 and we will endeavour to match your needs.

Features & Benefits

  • Long-lasting protection in minutes - all weather resistant
  • Interior & exterior use
  • Sag resistant, no brush strokes
  • Direct application to rust or bare metal
  • Primer and topcoat in one
  • Low odour – VOC Compliant
    • Lead- and chromate free
  • High coverage: 10.3 m² per litre
  • One coat hiding, good flow properties
  • Dilutable with Rust-Oleum 7301 CombiColor Thinner
  • Usable down to 5°C
  • Available in virtually any colour - RAL, BC & NCS.
  • Heat resistant up to 90°C (dry heat)
  • Corrosion protection (in light industrial environments)

Product Specification

Technical Data
Density: Gloss: 1,07±0,09; Satin: 1,12±0,10
Solids content in volume: Gloss: 53-57%; Satin: 48-52%
Heat Resistance: 90°C (dry heat); at elevated temperatures discoloration may occur.
Recommended Wet Film Thickness 100 μm
Recommended Dry Film Thickness 55 μm
Theoretical Consumption 10.3 m²/l at 55 μm dry, depending on colour.
Practical Consumption Practical coverage depends on many factors such as porosity and roughness of the substrate and material losses during application.

Preperation & Application


Surface Preparation

Remove oil, grease and all other surface contaminations by alkaline or high pressure (steam) cleaning in combination with appropriate detergents. Remove rust scale, loose mill scale, loose rust and loose coatings by scraping and wire brushing to St 3 (ISO 8501-1 : 1988), light blast cleaning or sanding. Sand intact coatings to roughen the surface slightly. The surface must be clean and dry during application. Galvanised, Zinc and Aluminium surfaces have to be primed first with CombiPrimer Tack Coat 3302.


Direction For Use

To ensure homogeneity, coating materials should be thoroughly stirred prior to use.


Application Conditions

Temperature of air, substrate and coating material between 5° and 35°C and relative humidity below 85%. The substrate temperature must be at least 3°C above dew point.


Application & Thinning


Up to 10% volume RUST-OLEUM Thinner 7301. Use natural bristles, long hair brushes.



Up to 10% volume RUST-OLEUM Thinner 7301. Use short nap, polyamide 6-12 mm rollers. Roller application may require 2 coats to achieve recommended dry film thickness


Air-Atomised Spray

10-25% volume RUST-OLEUM Thinner 7301. Gravity cup and pressure cup. Tip size: 1.0 - 1.5 mm. Atomising pressure: 2 - 4 bar.


Maximum dry film thickness per coat: 75 μm dry, equals 135 μm wet. To avoid inhomogeneous appearance with aluminum coloured coatings it is recommended to spray 7311 with HVLP. CombiColor Metal 7300/7400 can be recoated with 7300 Aerosols within 4 hours or after 72 hours.

Drying Times

30°C 20°C/RH 50% 10°C
Touch dry: 1 ½ hours 2 hours 3 hours
Dry to handle: 6 hours 8 hours 16 hours
Dry to recoat: 8 hours 16 hours 24 hours
Fully cured: 5 days 7 days 14 days

Safety Data

VOC level: 439 g/l
VOC readymix: 495 g/l
VOC category: A/i
VOC limit: 500 g/l
Grenelle: A+