PPG SigmaCover 256 formally Amercoat 385 PA

Part A and B: UN1263 (Class: 3, Pk Grp: III)
Formally Amercoat 385 PA. A high build poly amide cured zinc phosphate epoxy primer.
Available in 4 and 20 Litres
From £56.69 £47.24
In stock
Only %1 left
Product Description

SigmaCover 256 (Amercoat 385 PA) is a two component, high build, polyamide cured, recoatable zinc phosphate epoxy primer designed to be used as a general purpose primer on steel and concrete structures.

SigmaCover 256 offers user excellent toughness and flexibility that works well for long periods.

Best Uses

SigmaCover 256 is highly suited for use in coastal, marine and atmospheric conditions and contains outstanding rust preventing properties that get to work in adverse, wet, weather conditions. This product acts as a general use primer that offers excellent adhesion to steel, galvanised steel and aged epoxy coatings.


SigmaCover 256 can be applied using airless spray, long haired brush or roller with rounder edges and has an ultra fast drying time of just 2 hours to touch at low temperatures down to -10°C and is ready for an overcoat after a 3 hour period has elapsed. SigmaCover 256 has a theoretical coverage rate of 6.3m2 per litre and is available in an Oxide Red or Cream finish suitable for use directly onto metal or concrete.

Surfaces and Environment

SigmaCover 256 has been specifically designed to be highly water resistant and works well to prevent rust forming on metal substrates. 256 should be used in external environments in marine and coastal environments to achieve its full potential but can also be used as a primer or finisher in dry internal areas too.

Technical Details


  • SigmaCover 256. formally Ameron Amercoat 385 PA
  • General purpose epoxy primer or build coat for steel and concrete structures
  • Suitable for atmospheric and marine conditions
  • Can be recoated with various two component and conventional coatings even after long weathering periods
  • Lead and chromate free
  • Excellent rust preventing properties in industrial or coastal atmospheres
  • Tough, with long term flexibility
  • Cures even at temperatures down to -10°C
  • Good adhesion to steel, galvanised steel and aged epoxy coatings
  • Easy application, both by airless spray and brush
  • Can be used as epoxy primer/finish (for dry internal areas)

Technical Info

Components: Two Part
Type: High Build Polyamine Cured Zinc Phosphate Epoxy
Finish: Eggshell
Stock Colours: Cream
Tintable: No
VOC Content: 338.0g per Litre
Volume Solids: 63%
Suitable Substrates: For steel and concrete structures in atmospheric exposure
Application Method: Brush, Roller or Airless Spray
Theoretical Coverage: 6.3m2 per litre at 100 microns
Wet Film Thickness (WFT):
Dry Film Thickness (DFT): 75 - 150 microns
Induction Time: -
Pot Life: -
Touch Dry: 8 hours at 20°C
Overcoatable: After 3 hours at 20°C
Fully Cured: 4 days at 20°C
Cleaner / Thinner: PPG Thinner 91-92
Shelf Life: At least 24 months when stored cool and dry
Packaging: Available in 4 and 20 Litres

The manufacturers data sheets are available for download from this website. It is your responsibility to read and understand all aspects of the data sheets before you place an order and prior to application. Please pay special attention to the preparation, mixing and application temperatures of the product, cleaning of substrate and environmental factors such as temperature, rain etc. Quoted coverage rates are based on the manufacturers theoretical rates and may vary depending upon substrates absorption, texture and application. We always recommend a test is carried out to ensure suitability.

Customer further agrees that Promain have no liability for any errors or omissions contained within the Product Data Sheets and are not liable for failure due to misapplication or inadequate substrate cleaning and preparation. For more information please refer to our Terms & Conditions.

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