Water-based Decorative Anti-Carbonation Coating with a Metallic Finish


Monodex Metallic is a high performance, elastomeric, water-based coating which is the world’s first metallic anti-carbonation coating. It is designed to be applied as a lustrous feature finish over an existing Monodex Smooth base coat. Monodex Metallic can be used for both external and internal applications to provide a unique, sparkling architectural statement.

Whilst still remaining highly protective, Monodex Metallic incorporates metallic particles which reflect more light than solid colours and the coating achieves a luxurious sheen. The coating can be created in metallic colours such as gold, silver, copper, bronze or pearl, as well as more vibrant shades such as metallic purple.


Monodex Metallic can be applied directly over Monodex Smooth without the need for a primer. Like other Flexcrete anti-carbonation coatings, Monodex Metallic is single component and water-based, so it is user-friendly and cures without the release of strong odour or hazardous solvents. It is ultra-fast drying, enabling two coat applications on the same day and it can be applied all year round. Throughout its lifetime, it has excellent colour retention and strong UV resistance.


  • Metallic particles ensure a sparkling, reflective finish, making it ideal for architectural new build or refurbishment projects
  • Monodex Smooth ensures a highly protective base coat, whilst a Monodex Metallic top coat ensures a lustrous, metallic finish
  • High diffusion resistance to carbon dioxide, offering complete protection from the effects of carbonation
  • Equally suited for both external and internal applications
  • Low hazard, water based product with no flash point. Equipment easily cleaned with water
  • Fast drying, allowing two coat applications on the same day and year round use
  • Low water vapour diffusion resistance allows damp substrates to breathe and dry out without blistering
  • Provides protection against water ingress, yet allows damp substrates to breathe
  • Rapid application by brush, roller or airless spray
  • Monodex Metallic can be applied using Graco Pumps (see the  Airless Spraying of Decorative Protective Coatings & Membranes Graco Pumps)
  • A range of special metallic colours can be created.

Specification Clause

The anti-carbonation coating shall have a metallic finish and be a single component, high build, waterproof coating incorporating a micropolymer, cross-linking resin binder. It shall comply with the following performance specification:

  • Permeability to Carbon Dioxide 2.76 x 10-7 cm2/s in accordance with EN 1062-6 (equivalent concrete thickness 210mm and equivalent air layer thickness 83m at 150μm dry film thickness)
  • No blistering, cracking or flaking after 2,500 hours QUV-B weathering in accordance with EN 1062-11
  • Water vapour transmission 50g/m²/day in accordance with BS EN ISO 7783-2.

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