2. 1
Introduction
My name is Melvin Hickers, the Product Manager for Chromadek®
Indeed it’s a privledge to be here today to present some of the unique
developments that has gone into Chromadek®
We’ll be touching on the unique developments made in rendering a
great roofing material even better
That’s why GREAT HOUSES DESERVE GREAT ROOFS
A special mention to all those who helped to make this a success and
to all attending
The session is structured to provide
- an overview of Chromadek Ultim®
- an opportunity for interaction (questions and answers)
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The Ultim®Journey
A brief INTRODUCTION to Ultim®
PRIME SITES where Chromadek® has been recently applied
The “DNA” of Chromadek®
INSIGHT’s into Chromadek® and Chromadek Ultim®
ASPECTS on the paint system
SPEAKING EFFICIENCY, THERMAL ASPECTS
- Heat reflectivity and Chromadek® colour range
OUTSTANDING FACTS about Chromadek®
Chromadek Ultim®’s ENHANCED PERFORMANCE
Warranty available
Branding and Marking of genuine Chromadek® : “Know what you buy”
GENTLE CARE for Chromadek®
- Handy hints
- Do’s & Dont’s
SPEAKING GREEN, SUSTAINABILITY, Watch this Space!
8. What is Pre-painted Steel?
12
Pre-painted roof sheet steel is generally composed of a
steel substrate protected by a corrosion resistant metallic
coating, a surface treatment, a primer and a topcoat.
Also Heat Reflective
Green credentials, Cr free!
Edge protection
3 unique benefits
The DNA of Chromadek®, 3 unique benefits
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Heat reflective roofing solutions
An exciting development in Heat Reflective roofing solutions
Four of the colours of the Chromadek® range (See Data Sheet C1.4),
Charcoal Grey, Dark Dolphin, Buffalo Brown and Aloe Green utilize an
advanced thermal technology paint system. This advanced paint system
incorporates a heat reflective pigment providing up to 8°C cooling and
improved durability. The durability of an exterior coating is measured
according to its capability of maintaining gloss, colour and film integrity.
How Heat Reflective Chromadek® works?
The heat reflective pigments present in Heat Reflective Chromadek® are
chemically inert and highly stable. Heat Reflective Chromadek® reflects
more of the sun’s energy to prevent the coating from absorbing energy
directly resulting in less heat build up resulting in longer life-cycles (less
fading).
It’s really cool!
Thermal efficiency
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The Heat Reflective aspects of Chromadek® what you imagine
you can see
A demonstration of Chromadek®’s heat reflective aspects by Near Infra Red Reflectivity
showcasing the thermal features and benefits of advanced paint technology (pigment)
used in Chromadek® and Chromadek Ultim®
See the difference between Heat Reflective and non Heat Reflective for the same colour
Heat reflective roofing solutions
Demonstration
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The technical DNA of Chromadek® has been reconfigured through 4
Chromadek® colours in conjunction with paint suppliers BASF & BECKERS
using advanced pigment technology resulting in the heat reflective benefits
See the difference between Heat Reflective and non Heat Reflective for different colours
Heat reflective roofing solutions
Demonstration
The Heat Reflective aspects of Chromadek® what you imagine
you can see
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1. Aesthetic appeal
More facts about Chromadek® products
• Variety of great colours. Making a surface more appealing.
• This includes colour, gloss and structure.
2. Corrosion protection
• Predictable life cycle per area.
3. Resistance to UV
5. Lightweight
• Reduces load on supporting structure
(lighter weight per area vs cement tiles, residential applications).
• Less fading, more stable paint systems.
4. Thermal efficiency
• Its really cool (designed to be heat reflective).
6. Flexibility
• Traditional straight roof or innovative curved roofing designs.
Features that translate into benefits
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Chromadek Ultim’s® enhanced performance
Test Method Measurement
Chromadek®
Standard
Chromadek Ultim®
Hot (80°C)-QUVA
+ Humidity
(2000h)-EN10169.
Resistance of organic
coating against weathering
– impact of UV,
Temperature and Moisture.
Better than RUV3 category for sensitive gloss
retention systems (> 60%) and colour change (∆E
<3)
Salt Spray Test –
ISO13523-8 and
ISO4628-2
Corrosion resistance as
indicated by severity of
blistering and degree of
delamination at cut-edge
and scribe to metal
coating.
500 h:
Blistering:
No defects visible
when magnified 10x.
(Specification <2S2)
Delamination
At scribe to coating
<4mm
At cut-edge < 5mm.
1000 h
Blistering:
No defects visible when
magnified 10x.
(Specification <2S2)
Delamination
At scribe to coating
<4mm
At cut-edge < 8mm.
Condensation
resistance test
QCT- ISO 6270 and
EN 13523-26
Simulate impact of
moisture condensation
(dew, rain) on the pre-
painted. Degree of
blistering is assessed after
1500h
No Blistering
Resistance to weathering, corrosion & condensation defined
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Indication of warranty by region
Chromadek® is suitable for greater than 5km from the high water mark and industrial
exposure.
For or up to 400m from the high water mark (sea) or for heavy industrial exposure
Chromadek Ultim® is your solution. (Terms and conditions apply).
Helps you to make the right choice by region
25. Gentle care for Chromadek®
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• Walking on roofs (avoid abrasive contact, soft contact)
• Scheduled roof maintenance (regular and important)
• Roof location (avoid adverse conditions)
• Roof pitch (< 5 degrees is a flat roof)
• Different metal compatibility
Correct type and class of fastener
Special fixtures for fitting solar panels
• Cutting:
- Avoid Swarf and Sparks from angle grinders
- Suggested alternatives, circular saw and nibbler cutting
• Storage and handling:
- Guidelines on the correct storage and handling practice
available (www.chromadek.com)
Key considerations for Chromadek®
26. Considerations when caring for
Chromadek®
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• Damage to paint coating • Repainting of roofs
3 interacting aspects
cause
effect
guidelines
27. Do’s and dont’s for Chromadek®
• Metal deposits: Loose fasteners, pop-rivet mandrills, metal
drillings/objects increase the risk of corrosion and should be
removed.
• 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). 32
3 aspects to keep in mind
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Handy Hints for Chromadek®
• If Chromadek® sheeting has been scratched to the substrate, it should be repaired with approved touch-
up paint with a thin paint brush to minimise unnecessary over-painting. Light scratches are best left
untreated. (Contact AMSA fore more info or visit our datasheet, C1.4)
• Wash the underneath of eaves down with fresh water every six months.
• Abrasive cutting or trimming of Chromadek® sheeting on top of roofs should be avoided. However, if
unavoidable, the iron particles must be removed from the roof surface by means of a non-scratch bristle
brush or broom, as it is not easily washed down by rain. If left on the roof the iron particles will start to
rust, tarnishing the Chromadek® paint surface. See Slide for recommended cutting equipment.
Rusted iron
particles
Prevention is recommended, apply correct cutting & cleaning practices
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• The slope of the roof shall be such that water can drain freely from it without
forming ponds. The minimum recommended slope for Box Ribbed or S-Rib
sheeting is 5°.
Handy Hints for Chromadek®
Prevention is recommended, apply correct roof design
31. Handy Hints for Chromadek®
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Prevention is recommended, apply correct storage practices
32. Fasteners to be used
• 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.
• For coastal or heavy marine you need to use Class 4 fasteners
(Chromadek Ultim® applications)
• Chromadek® warranty advises the above.
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Incorrect fasteners are the preferential site for premature metal roof
failure
Ordinarily Class 3 for Chromadek® & Class 4 for Chromadek Ultim®
33. Claims handling
• Claims are investigated on a case by case basis.
• Below is an example for inspection of colour changes
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After sales service
Predicitive degradation curve
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Chromadek® is proud to be associated with
Chromadek® and Chromadek Ultim® specification is available on line to
Architects and specifiers at www.autospec.co.za and www.specilink.co.za
Watch this space!
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ArcelorMittal is a member of SAMCRA
Affiliation within SAMCRA (Southern African Metal Cladding and Roofing
Association) carries a two-fold benefit as the association will ensure that high
standards in quality and workmanship is maintained. While this is supportive of the
products supplied into this industry by ArcelorMittal it most importantly ensures the
brand integrity of Chromadek®
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ArcelorMittal is a member of SAMCRA
• Standards and regulations (SANS 10237, normative reference)
• Correct class of fastener to be used advised (SANS 10237)
• Inputs to National Building Regulation (SANS 10400L, 10400XA)
• Ensures Industry adopts an accredited framework
• Assists in the marketing of steel roofing image & preservation
• Serves to interface with designers, installers fabricators and roof-
owners
• Accreditation and training of roofing installers planned
• Guidelines for industry excellence (best practices)
• Research and development
What’s being done in the metal roofing & cladding space
