APR 2010


   Volume 5, Issue 2   

Editor's Note

In our February issue we started with a discussion on what cool metal roofs are about and how they can help to reduce the temperatures of  warm urban regions.

In this month's issue we will dwell a bit deeper into the radiative properties that characterizes cool metal roofs. Although some of this technical articles can come across as being rather dry, it is important that you gain as much knowledge as possible so that you can make a correct decision when it comes choosing colour coated steel material for your metal roof.

Colourcoil Industries is proud to announce that we are the 1st pre-painted steel manufacturer in Malaysia to become U.S ENERGY STAR partner. Please read our article for more information on Energy Star.     

Thank you.

Team leader & Editor



Cool Roofing Metals

Click here to find out more

• Compliant to U.S Energy Star® and Malaysia Green Building Index(GBI) requirements



Previous e-Newsletter

Vol 4. Issue 3 Aug 2009
Vol 4. Issue 4 Oct 2009
Vol 4. Issue 5 Dec 2009
Vol 5. Issue 1 Feb 2010

Click on Articles of interest

a) Technical Journal - Staining of
   steel panels from steel debris

b) Lowering Maintenance Costs -
    Choose the right material

c) Technical Journal - Metal
   Roofing & Lightning

d) More Tips - Maintenance of
   old Metal Roofs

e) Beautiful Wall Cladding -
    Wisma Perindustrian Cafeteria

f) Beautiful Metal Roofs - Taman
   Seputeh, Kuala Lumpur

g) GOOD DESIGN - Dissimilar
     (i.e. incompatible) Materials

h) Technical Journal - Steel
   Cladding for Animal
   Confinement Buildings

i) Beautiful Metal Roofs -
   Bungalow, Petaling Jaya

j) Beautiful Metal Roofs - The
    Gardens Midvalley, Kuala

k) Energy Savings with Cool Metal

l) Urban Heat Island (UHI) & cool
   metal roofs

m) IKRAM Certification

Click here to view archives



























Technical visit by IEM & ACEM (Sabah Branch)

COLOURCOIL KL Branch new office map & address
Need more Info?


Click here

ENERGY STAR is a joint program of the U.S. Environmental Protection Agency and the U.S. Department of Energy helping to save money and protect the environment through energy efficient products and practices.

Colourcoil Industries is proud to announce that we are the first pre-painted steel manufacturer in Malaysia to be recognized as an Energy Star partner. Hence all of Colourcoil's solar reflective pre-painted steel products for the downstream manufacturing of "cool metal roofs" are now compliant to Energy Star's requirements.

What's in it for you?

  • ENERGY STAR® roof products reflect more of the sun's rays. This can lower roof surface temperature by up to 100F, decreasing the amount of heat transferred into a building.

  • ENERGY STAR® roof products can help reduce the amount of air conditioning needed in buildings, and can reduce peak cooling demand by 10-15 percent.

Here's proof that Colourcoil Industries is an Energy Star® partner (Just type in Malaysia and search).

  Click here to learn more about Energy Star® program.

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In our previous newsletter, we discussed about what cool metal roofs was all about as well as how cool metal roofs can help reduced Urban Heat Island (UHI) effect. In a nutshell, cool metal roofs are metal roofing products that integrate materials with greater spectral reflectance than their traditional, non-cool counterparts, and thereby minimize the transfer of heat to the building below.

The two radiative properties that characterize cool roofs are solar reflectance and thermal emittance (see fig below). A cool roof minimizes the solar heat gain of a building by first reflecting incoming radiation and then by quickly re-emitting the remaining absorbed portion. As a result, the cool roof stays cooler than a traditional roof of similar construction.

Solar reflectance (SR) is the ability of a material to reflect solar energy from its surface back into the atmosphere. The SR value is a number form 0 to 1.0. A value of 0 indicates that the material absorbs all solar energy and a value of 1.0 indicates total solar reflectance. Energy Star requires an SR value of 0.25 or higher for steep slope (above 2:12) roofing and an SR value of 0.65 or higher for low slope (2:12 or less) roofing. 

Thermal emittance (TE) is the relative ability of the roofing material to re-radiate absorbed heat as invisible infrared light (relative to a black body radiator). This absorbed heat will either be gradually or quickly re-radiated away from the roof; the quicker the better because the longer the heat is trapped at the surface of the roof the more likely it is to penetrate the building below. Thermal emittance is also measured on a scale from 0 to 1, so a roofing material with a higher thermal emittance will re-emit absorbed thermal energy more quickly than a material with a low emittance and will result in a "cooler" roof.

Solar Reflectance index (SRI)
Codes, standards and programs that specify cool roofing requirements may also reference an additional calculated value,the Solar Reflectance Index (SRI). SRI allows actual measured solar reflectance and thermal emittance values to be combined into a single value by determining how hot a surface would get relative to standard black and standard white surfaces.

The standard black roofing material has a high emittance value (90 percent) but a low reflectance value (5 percent). This creates a hot roof surface because even though the emittance is high, there isn't enough reflectance to help cool the roof. As such, the standard black roof is given an SRI value of 0.

The standard white roofing material is highly reflective (80 percent) and has the same emittance as the standard black surface (90 percent). Its surface is much cooler and the standard white roof is assigned an SRI value of 100. Like solar reflectance and thermal emittance, a higher SRI value is synonymous with a cooler roof

To meet Malaysia's Green Building Index (GBI) roofing requirements, a roofing material must have an SRI of 29 or higher for steep slope (above 2:12) roofing and an SRI value of 78 or higher for low slope (2:12 or less) roofing.

Where are these SR or SRI values published?
Obviously different colours on different substrates will vary in SR or SRI values. These values are normally found in colour charts published by roofing manufacturers and manufacturers of pre-painted steel (i.e. colour coated steel).

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Colourcoil website has just been upgraded to include the hot topic of "Cool Metal Roofs". Our IT department would like to express their gratitude to the R&D department for their assistance in the layout and write-up for the Cool Metal Roof webpages. In our opinion, Colourcoil Industries probably has the most complete info on this subject from the viewpoint of a pre-painted (or colour coated) steel manufacturer.

Please browse through our newly upgraded website to learn how Colourcoil Kool energy-efficient "Solar Reflective" roofing metal can benefit you and the environment.  

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Technical Visit by IEM & ACEM (Sabah Branch)
The Sabah Branch for both the Institution of Engineers Malaysia (IEM) and Association of Consulting Engineers Malaysia (ACEM) held a factory and technical visit to Colourcoil Industries at its headquarters in Telipok, Sabah on 6th March 2010 (Saturday). The team comprising of almost 40 professional engineer members from the private and public sector was spearheaded by Ir. Tang Koh Yon@ Tang Kok Yon, IEM Sabah Branch 2009/2010 Vice Chairman who is also an ACEM Committee Member.

In-line with the Malaysia government’s initiative to promote the practice and construction of Green Buildings, participants were briefed about Colourcoil’s newest and exciting range of solar-reflective pre-painted steel products for the downstream manufacturing of metal roofing. These special pre-painted steel products are coated with custom formulated fluorocarbon paint system which have high infrared solar-reflective properties, hence a high Solar Reflectance Index (SRI) which enables its application to contribute points towards the building’s overall Green Building Index (GBI) score. Combined with the advanced infra-red curing technology, Colourcoil’s high performance pre-painted steel finishes are now ‘as cool and smooth as ice’.


We were delighted to announce that apart from international affiliations such as being an ENERGY STAR Partner, Colourcoil Industries is now also a proud member of the national Malaysian Green Building Confederation (MGBC).

Colourcoil has certainly come a long way and  we are now able to provide wider options of ‘green’ pre-painted steel products to local and international professional consultants. Insist on Colourcoil’s Kool energy-efficient "solar-reflective" roofing metal to conserve precious energy and save Mother Earth!

Colourcoil Industries specially thanks the IEM & ACEM Secretariat for organizing the visit.

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COLOURCOIL KL Branch New office!

Our new address:
1005, Block A, Pusat Dagangan Damansara 1
No. 9, Jalan 16/11, Off Jalan Damansara
46350 Petaling Jaya, Selangor
TEL 03 7956 1008  Fax 03 7956 1009

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Need more info?
Whether you are an architect, engineer, developer, house owner or a metal roofing or wall cladding manufacturer, our marketing team will be most delighted to discuss with you on your specific product requirements.

If you wish to make a factory visit, obtain a free brochure or complete specifications and colour charts, please contact our courteous and friendly marketing staff by calling the nearest office or just drop us an email at info@colourcoil.com.

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