PPG SigmaCover 456 HS

Part A: UN1263 (Class: 3, Pk Grp: III), Part B: UN3469 (Class: 3.8, Pk Grp: III)
A two component epoxy for use as a primer or coating for steel and concrete structures. Highways Approved Item No. 116
Available in 4 and 20 Litres
From £112.32 £93.60
In stock
Only %1 left
Product Description

PPG SigmaCover 456 HS is a two component high solids polyamide cured recoatable zinc phosphate epoxy primer/coating.

A general purpose epoxy primer/coating for steel and concrete structures in atmospheric exposure. Highways Agency Item No.116.

Best Uses

PPG SigmaCover 456 HS has excellent rust preventing properties that make it ideal for use in industrial and coastal atmospheres where weather can often be adverse. SigmaCover 456 HS offers toughness and long term flexibility meaning it will not crack, flake, blister or peel if the surface moves or bends.


PPG SigmaCover 456 HS can be applied using brush or airless spray and has a theoretical coverage rate of 7.3m2 per litre. 456 HS has a touch dry time of 8 hours and can be recoated after this period has elapsed. This product can be applied in temperatures down to -5°C making it ideal for use in environments with adverse weather conditions.

Surface and Environment

PPG SigmaCover 456 HS has been specifically manufactured for steel and concrete structures in an atmospheric environment.

Technical Details


  • LuL APR No. 1151 - XM92/M24 Coating System for Maintenance Steel for application to bridges and structures to provide a minimum expected service life of 25 years when spot blast cleaned to Sa 2½ or 15 years when power tool cleaned to St 3. This paint system consists of an epoxy primer (SigmaCover 690), an epoxy buildcoat (SigmaCover 456 HS) and a finish coat which may be either a polyurethane gloss (SigmaDur 550), a polyurethane semi-gloss (SigmaDur 520) or an epoxy acrylic gloss (SigmaDur 540).
  • Highways Agency Item Number 116


  • Can be recoated with various two component and conventional coatings even after long weathering periods
  • Free from lead and chromate containing pigments
  • Excellent rust preventing properties in industrial or coastal atmospheres
  • Tough, with long term flexibility
  • Good adhesion to steel
  • Easy application, both by airless spray and brush
  • Cures at temperatures down to -5°C
Components: Two Components
Type: Epoxy Primer / Coating
Finish: Eggshell
Stock Colours: Black, RAL7040 Window Grey, RAL7043 Traffic Grey B, RAL9010 Pure White, and White
Tintable: Yes. Please note, bespoke tints are non refundable / exchangeable
VOC Content: 277.0 g/l
Volume Solids: 73 +/- 2%
Suitable Substrates: Steel
Application Method: Brush, Roller, Airless Spray or Air Spray
Theoretical Coverage: 7.3m2/l for 100 microns 
Wet Film Thickness (WFT): -
Dry Film Thickness (DFT): 75 - 150 microns (3.0 - 6.0 mils) depending on system
Induction Time: None if above 10°C, or 20 minutes Below 10°C
Pot Life: 4 hours at 20°C
Touch Dry: 6 hours at 20°C
Overcoatable: Minimum 8 hours
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 Litres and 20 Litres

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