*PPG Sigma AquaCover 20

This product is now discontinued.
Out of stock
Product Description

Please note this product is now discontinued and has been replaced with PPG Aquacover One 645. Please contact our Technical Team on 01462 421333 for further information.

PPG Sigma AquaCover 20 is a one component, waterborne, high-build, zinc phosphate primer/coating for pre-treated steel.

PPG Sigma AquaCover 20 is a single component, zinc phosphate primer/coating which is based on acrylic dispersion. It is particularly suitable when solvents are not permitted due to health and safety reasons. Sigma AquaCover 20 provides good anti-corrosive properties, is fast-drying and can be over-coated with a range of waterborne acrylics, solvent bourne coatings and alkyd paints.

Best Uses

PPG Sigma AquaCover 20 provides excellent adhesion to pre-treated steel surfaces, providing anti-corrosive protection and fast drying properties.


PPG Sigma AquaCover 20 should be stirred well before use. It can be applied using by spray, long haired brush or polyether roller with rounded edges. Sigma AquaCover 20 has a fast drying time (30 minutes to touch and ready for an overcoat after 4 hours). Sigma AquaCover 20 has a theoretical coverage rate of 5.7 square metres per litre and is available in a selection of shades.

Surface and Environment

PPG Sigma AquaCover 20 is designed for use in industrial or construction exposures and for use on structural and pre-treated steel. It provides a protective coating that works at preventing the corrosion that can weaken the substrate.

Technical Details


  • Excellent adhesion to pre-treated steel
  • Good anti-corrosive properties
  • Fast drying
  • Overcoat with most water borne acrylics, waterborne epoxy coatings and alkyd paints

Technical Info

Components: One Component
Type: Waterborne
Finish: Flat
Stock Colours: Black, White, RAL 7040 Window Grey, RAL 7043 Traffic Grey B
Tintable: Yes to RAL colours - Please call for information. Please note, bespoke tints are non refundable / exchangeable
VOC Content: 19.0 g/kg
Volume Solids: 43 +/- 2%
Suitable Substrates: Pre-treated Steel
Application Method: Brush, Roller, Airless Spray or Air Spray
Theoretical Coverage: 5.7 sq. metres per litre
Wet Film Thickness (WFT): -
Dry Film Thickness (DFT): 75 microns (3.0 mils) per coat
Induction Time: -
Pot Life: -
Touch Dry: 30 minutes at 20°C
Overcoatable: After minimum of 4 hours at 20°C
Fully Cured: -
Cleaner / Thinner: Thin with Tap Water. Cleaning: 1st clean Thinner 90-53, 2nd clean Thinner 70-05
Shelf Life: At least 18 months when stored cool and dry
Packaging: Available in 5 Litres

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