Capalac Rostschutzgrund

Rust inhibitive primer for iron and steel.

LV Texte

Field of Application

Suitable for corrosion inhibiting (anti-rust) priming coats on iron and steel. For exterior and interior use.

Material Properties

  • Unleaded and free of chromates.
  • High corrosion protection.
  • Active rust-inhibiting pigments.
  • Excellent adhesion.
  • High opacity (hiding/covering power).
  • Fast-drying.
  • Easy to apply.

Material Base / Vehicle

Alkyd resin, solvent-based.

Packaging/Package Size

375 ml, 750 ml, 2.5 litres, 10 litres


Light grey

Gloss Level

Matt (flat)


Keep in a cool place.
Keep cans/containers tightly closed.


Approx. 1.5 g/cm3

Suitability according to Technical Information No. 606 Definition of Application Areas

Interior 1Interior 2Interior 3Exterior 1Exterior 2
(–) inapplicable / (○) of limited suitability / (+) suitable

Suitable Substrates

Iron and steel

Substrate Preparation

Derust iron and steel surfaces according to industry standard (metallic bright). 
Remove contaminations/soiling, oils, fats/greases and all other materials that may prevent good adhesion.

Method of Application

Capalac Rostschutzgrund can be applied with brush, roller or spraying equipment. Stir well before use. Thin with synthetic resin thinner, if necessary.

Guidelines for Spray Application:

Ø NozzlePressureThinningMaterial temperature
High pressure1,5 - 1,8 mm3–4 barmax. 10% by volume-
Low pressure1,5 - 1,8 mm0,2–0,5 barmax. 10% by volume-
Airless0,011–0,013 inch180–230 bar– (delivered viscosity)35°C

Surface Coating System

SubstrateUseSubstratePreparationPriming CoatIntermediate
Finishing Coat
Iron and steelinteriorderusting/degreasing1–2x Capalac Rostschutzgrundif required Capalac Weiß- or Buntlacke or VorlackCapalac
Weiß- or Buntlacke / white or pigmented
Capalac enamels (coloured paints)
exteriorderusting/degreasing2x Capalac RostschutzgrundCapalac Weiß- or
Buntlacke or Vorlack
 Apply one or two coats of Capalac Rostschutzgrund, depending on the loads/conditions.


Consumption Rate ml/m2Brush ApplicationRoller
High Pressure Airless Low Pressure

Application Conditions

Lower Temperature Limit for Application and Drying:
+5 °C for product, substrate and ambient air. Relative humidity must not exceed 80 %.

Drying/Drying Time

Drying Times at 20 °C,
65 % relative humidity
(by brush)
recoatable (spraying)
after hours2–34–5126–8

Lower temperatures, higher humidity and thick film application extend the drying time.

Tool Cleaning

Immediately after use with solvent naphta/white spirit or suitable synthetic resin thinner.

Special Risks (Hazard Note) / Safety Advice (Status as at Date of Publication)

Flammable liquid and vapour. May cause drowsiness or dizziness. Harmful to aquatic life with long lasting effects. If medical advice is needed, have product container or label at hand. Keep out of reach of children. Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. Do not breathe vapours/ spray. Use only outdoors or in a well-ventilated area. Store locked up. Repeated exposure may cause skin dryness or cracking. Contains: naphtha (petroleum), hydrotreated heavy. Use P2 dust filter for grinding. Do not breathe spray dust. Use A2/P2 combination filter for paint spraying.


Materials and all related packaging must be disposed of in a safe way in accordance with the full requirements of the local authorities. Particular attention should be made to removing wastage from site in compliance with standard construction site procedures. In Germany: Only completely emptied clean cans/containers should be given for recycling. Deliver packaging with residues of liquid material to a collecting/collection point for old enamels.

EU limit value for the VOC content

of this product (category A/i): max. 500 g/l (2010). This product contains max. 500 g/l VOC.
Unthinned product (delivered viscosity): max. 370 g/l VOC.

Product Code Paints and Enamels


Further Details

See Material Safety Data Sheet (MSDS).

Customer Service Centre

Tel.: +49 6154 71-71710
Fax: +49 6154 71-71711

International Distribution: Please see

Product recommendation:

Capalac Vorlack

Capalac Dickschichtlack

Capalac Aqua Multiprimer

Capalac Aqua Metallschutz