Available in IBR, Widespan & Corrugated profile cut to any length as per customers' requirements
Chromadek® is ArcelorMittal South Africa’s trade name for a range of colour coated sheets.
This high quality product has been manufactured by ArcelorMittal in South Africa for more than 35 years.
Chromadek® is the roofing and cladding material of choice made by architects, designers, industry and homeowners renowned for its aesthetic value, protection from the natural elements and the ease of application complimenting any building.
These key attributes have been developed spanning research years to prolong the useful life of the paint system and sheeting in the harsh South African climate.
Depending on the environment supported by the correct design, selection, installation and maintenance the applicable Chromadek® warrantee is shown in table 4.
CHROMADEK® PRODUCT RANGE: Chromadek® is produced by coating galvanized coated steel coil subject to stringent quality control standards on a continuous coil coating line.
The galvanized steel is chemically cleaned and treated to enhance corrosion properties and paint adhesion.
A primer which is cured in a prime oven is applied, followed by a top coat that is cured again to obtain its aesthetic and functional properties.
Standard colours and paint systems: Chromadek® is available in a range of 14 standard colours based on a resin paint system consisting of Polyester/Polyurethane blends in specialised pigments ensuring corrosion resistance, durability and response to formability.
Inspection & Maintenance
A biannual inspection of the Chromadek® coated surface is recommended to enable timeous maintenance and to prolong the useful life of the sheeting.
The following should be done during the inspection:
Accumulation of dirt: It is important to remove dirt and debris that is not removed by normal rainfall which could bind moisture and corrosive substances to the coated surface.
Washing may be carried out with a hose and a soft bristle brush, using clean water. In areas where heavy dust deposits dull the surface, a solution of clean water and natural cleaner can be applied, followed by rinsing with clean water.
In any case, the customer must check that the cleaning procedure and detergents used do not damage the coating.
Defects associated with aggressive washing and/or cleaning operations (mechanical or chemical damage) are not covered by the warrantee.
Loose fasteners, pop-rivet mandrills, metal drillings/objects increase the risk of corrosion and should be removed.
Ensure that the correct class of fasteners are used for the application.
All fasteners used for fixing Chromadek® to be in accordance with AS 3566 Class 3 (correct class of fastener to be applied for marine and industrial applications). Make sure fasteners are also washed and inspected for signs of corrosion.
Replace if they show signs of failure, rust or degradation of the waterproof membrane.
Damage to paint coating could increase the risk for corrosion if considered to be severe.
Cleaning and touching-up with appropriate paint should be considered. In areas where edge corrosion is evident - (i.e. overlapping sheets and sheet ends), the corrosion will spread unless treated in good time.
Clean the corroded edge thoroughly and repaint.
Repainting of roofs: If the need should arise to repaint a Chromadek® roof, it can be done with an appropriate roof preparation method and a suitable paint system.
ArcelorMittal can be contacted for advice and referral to approved and reputable roofing refinisher(s)