PPG Sigma AquaCover 400

Part A: UN9006 (Class: 9), Part B: UN3082 (Class: 9, Pk Grp: III)
Sigma AquaCover 400 two component polyamine cured water borne epoxy coating for steel and concrete.
Available in 4 and 16 Litres. Tintable to thousands of colours upon request
From £146.71 £122.26
In stock
Only %1 left
Product Description

PPG Sigma AquaCover 400 is a pack poly amide cured water-borne general purpose epoxy build coat and protective coating systems for steel structures and concrete surfaces.

Sigma AquaCover 400 is a two component polyamide cured water-borne epoxy particularly suitable when solvents are not permitted because of health and safety reasons. Sigma AquaCover 400 works excellently well as part of a protective system used on structural steel exposed to adverse atmospheric conditions.

Best Uses

Sigma AquaCover 400 is a coating best used to offer excellent durability to the surface ready for an overcoating with any of the range of Sigma Topcoats. AquaCover 400 can be overcoated with most dispersion and alkyd paints to create a durable finish but is best used over surfaces primed with AquaCover 200.


Sigma AquaCover 400 can be applied using airless spray, long haired brush or roller with rounder edges and has an ultra fast drying time of just 1.5 hours to touch at 20°C and is ready for an overcoat after just 2 hours. Sigma AquaCover 400 has a theoretical coverage rate of 7.1m2 per litre and is available in a selection of shades suitable for use on metal and concrete floors.

Surface and Environment

Sigma AquaCover 400 is designed for use in industrial or coastal exposures where weathering can be a massive factor in causing damage to surfaces. Sigma AquaCover 400 is ideal for use on structural steel and galvanised steel.

Technical Details


  • LuL APR No. 1256 - For use in below ground stations, for internal locations and for use on steel only. This paint system consists of an epoxy primer and an epoxy finish coat. It complies with LU Standard 1-085 'Fire Safety Performance of Materials' when applied to a steel substrate. It is not for masonry substrates.
  • ISO 12944-6 Systems For Steel - C3 Medium at 125 microns DFT

Slip Resistant Pendulum Testing to BS7976-2

AquaCover 400 - No Aggregate Status Slip Risk
Dry Pass Low
Wet Fail High
AquaCover 400 - With Aggregate Status Slip Risk
Dry Pass Low
Wet Pass Low


  • Particularly suitable when solvents are not permitted because of health and safety reasons
  • Free from lead and chromate containing pigments
  • Can be over coated with most dispersion and alkyd paints and 2 component durable finishes

Technical Info

Components: Two Component
Type: Waterborne Epoxy Coating
Finish: Semi-Gloss
Stock Colours: Black, White & RAL7040 Window Grey
Tintable: Yes, please call. Please note, bespoke tints are non refundable / exchangeable
VOC Content: 5.0 g/kg
Volume Solids: 53 +/- 2%
Suitable Substrates: Steel Structures, Concrete Floors
Application Method: Brush, Roller or Airless Spray
Theoretical Coverage: 7.1 m2 at 75 microns 5.3 m2 at 100 microns
Wet Film Thickness (WFT): -
Dry Film Thickness (DFT): 75 - 100 microns (3.0 - 4.0 mils) depending on system
Induction Time: None
Pot Life: 3 hours at 20°C
Touch Dry: 1.5 hours at 20°C
Overcoatable: Minimum 2 hours, Maximum 6 months
Fully Cured: 4 days at 20°C
Cleaner / Thinner: 1st cleaning: Thinner 90-53, 2nd cleaning Thinner 70-05
Shelf Life: Base at least 12 months when storted cool & dry. Hardener at least 6 months when stored cool & dry
Packaging: Available in 4 and 16 Litres

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