PPG SigmaCover 350

Part A and B: UN1263 (Class: 3, Pk Grp: III)
Formally SigmaCover 2AL and Amerlock 2AL. A surface tolerant primer/coating.
Available in 4 and 20 Litres - Tintable to thousands of colours
From £71.81 £59.84
In stock
Only %1 left
Product Description

PPG Sigmacover 350 is a surface tolerant primer/coating used in the Marine and Protective Coatings industry such as the top side of boats and ships. Sigmacover 350 can be tinted to most BS and RAL colours.

Network Rail M24 and M21 Approved.

Best Uses

Sigmacover 350 (Formally SigmaCover 2AL and Amerlock 2AL) has been developed by PPG as a surface tolerant primer or top coat predominately for marine applications requiring good impact and abrasion resistance, as well as other harsh environments that require protective coatings. Sigmacover 350 is a two component epoxy coating that is suitable for use on the topside of ships and boats. This will include the superstructure decks and cargo holds.


Sigmacover 350 can be applied to steel that has been blast cleaned to ISO-Sa21⁄2 for excellent corrosion protection, a blasting profile of 40 -70 microns (1.6 - 2.8 mils) is required. In addition, coated steel can be hydro-jetted to VIS WJ2/3L and existing sound epoxy systems and most sound alkyd coating system can be coated providing they have been sufficiently roughened.

Sigmacover 350 offers an unlimited overcoating interval providing the surface is free from chalking and other contamination's. In cases of exposure to direct sunlight or when the surface is contaminated it is recommended that the surface be cleaned and roughened to produce a good key this will ensure good adhesion of the subsequent coating.

Technical Details


This product is the primer or topcoat for the following systems:

  • Network Rail System M21 (XM92) at 100 microns DFT - Aluminium only
  • Network Rail System M24 (XM92) at 100 microns DFT
  • ISO 12944-6 Systems For Steel - C4 High at 80 microns DFT
  • ISO 12944-6 Systems For Steel - C5-I High at 120 microns DFT


  • Formally SigmaCover 2AL and Amerlock 2AL
  • Surface tolerant primer/coating for use in Marine and Protective Coatings industry
  • For Marine use it is suitable on topsides, decks, superstructures and cargo holds
  • Good impact and abrasion resistance
  • Fast-curing
  • Smooth film, easy to clean
  • Compatible with various aged coatings
  • Excellent corrosion resistance
  • Resistant to splash and spillage of a wide range of chemicals

Technical Info

Components: Two Part
Type: High Build Polyadmide Cured Epoxy Primer / Coating
Finish: Semi Gloss
Stock Colours: Aluminium, Grey, Red Brown, 00-E-53
Tintable: Yes, upon request. Please note, bespoke tints are non refundable / exchangeable
VOC Content: 361.0g per Litre
Volume Solids: 72%
Suitable Substrates: For topsides, decks, superstructures and cargo holds in marine environments
Application Method: Brush, Roller, Air Atomised Spray or Airless Spray
Theoretical Coverage: 5.8 m2 per litre at 125 microns
Wet Film Thickness (WFT): -
Dry Film Thickness (DFT): 100 - 150 microns
Induction Time: -
Pot Life: 3 hours at 20°C
Touch Dry: 2 hours at 20°C
Overcoatable: Between 6 hours and 21 days at 20°C
Fully Cured: 7 days at 20°C
Cleaner / Thinner: PPG Thinner 91-92
Shelf Life: 2 years unopened in original container
Packaging: Available in 4 and 20 Litres

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