JUNE 2011

www.colourcoil.com

   Volume 6, Issue 3   

 

Editor's Note

We are now coming to the middle of the year, and we like to take this opportunity to wish our readers that will be celebrating the harvest festival,

"Happy Harvest Festival", "Kotobian Tadau Tagazo Do Kaamatan", and in Bahasa Melayu, 'Selamat Hari Pesta Menuai".

Our office will be close for 2 days public holidays, 30th and 31st May.

In this issue, we will try to look at the big picture and see how cool roofs can actually help save our planet against global warming. There have also been readers asking us which is better, insulation or cool metal roofs and for this, we have an article and would like to point out they both can work hand in hand. Our IT staff has also included a new webpage to include our ISO and IKRAM certificates.

Some of our readers have also requested for project references. Our IT staff have developed a non-permanent webpage to showcase some of the building projects that have used our high performance pre-painted steel for their metal roofing.....enjoy.

Thank you.

Jim
Team leader & Editor
Editor@colourcoil.com
www.colourcoil.com

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Kool Roofing Metals

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Previous e-Newsletter

Vol 5. Issue  5 Oct 2010
Vol 5. Issue 6 Dec 2010
Vol 6. Issue 1 Feb 2011
Vol 6. Issue 2 Apr 2011

Click on Articles of interest

a) More Tips - Maintenance of
   old Metal Roofs

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

c) Technical Journal - Steel
   Cladding for Animal
   Confinement Buildings

d) Energy Savings with Cool Metal
    Roofs

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

f) IKRAM Certification

g) Colourcoil recognized as an
    ENERGY STAR PARTNER

h) Radiative properties of cool
    metal roofs

i) Meeting Energy Star Solar-
    Reflective Roofing Requirements

j) Kynar 500 Resin is the best
    choice for "cool metal roofs"

k) What is a Cool Metal Roof

l) We are ISO9001:2008 certified

m) Strong value for green buildings

n) Case Study#1 - Cool metal roofs
    saves energy costs

o) Why is metal roofing considered
    "Green"?

Click here to view archives

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Contacts

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Notes

References for the following article:
The planet is warming. Cool roofs can cool it down.

1. H. Akbari et al. 2009. Global cooling: increasing world-wide urban albedos to offset CO2. Climatic Change Volume 94, Numbers 3–4, 275–286. doi: 10.1007/s10584-008-9515-9

2. H. Akbari et al. 2001. Cool surfaces and shade trees to reduce energy use and improve air quality in urban areas” Solar Energy Volume 70, Number 3, 295–310. doi: 10.1016/S0038-092X(00)00089-X

3. H. Taha. 1997. Modeling the impacts of large-scale albedo changes on ozone air quality in the south coast air basin. Atmospheric Environment,Volume 31, Number 11, 1667–1676. doi: 10.1016/S1352- 2310(96)00336-6

4. Akbari et al. 2009.

 

www.colourcoil.com
info@colourcoil.com

ARTICLES

MEDIA

Click here

Website upgraded
Colourcoil's website has a new webpage named Certification. We have now included our IKRAM and  ISO 2008:9001 certificates to show our commitment in establishing and maintaining a quality management system and that we are continuously improving our process to ensure that our customers' needs are clearly understood and fulfilled to our best abilities.

Some of our readers have also been requesting for project references. To view some projects that have used our high performance pre-painted steel for their metal roofing, please click here. Kindly take note that the project reference webpage is not permanent and does not part of our website.

Colourcoil sales and marketing staff have also requested for a link to our technical journal in this newsletter, to let our readers know, "Metal roofing does not in any way increase this risk of lightning". We trust our technical journal will clear matters up. To view other journals, click here.

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What is the difference between a cool roof, a white roof and a green roof? What about solar?
There are a number of ways to use roofs to decrease the environmental toll of our built environment, and begin to use urban infrastructure as an agent of adaptation and environmental services. White roofs, cool roofs, green roofs, and photovoltaic installations can all be effective ways to improve the environmental performance of roofs.

A cool roof is a roof that uses a highly reflective building material, regardless of the color. Cool roofs can help cool buildings, cities, and the planet by reducing the percentage of sunlight converted to heat by the building surface. White roofs are one type of cool roof. Cool colored roofs are typically treated with a coating that makes them reflective. Because white roofs have a higher reflectivity of any color, they are generally a better choice than cool coloured materials. One caveat is that any colorued roof made out of metal or that has a metallic coating, will still absorb a lot of heat (because it will have a high thermal emittance) and is therefore not considered “cool.”

Green roofs are living vegetative systems located on rooftops. Their benefits include cooling the building through shading and insulation, reducing peak storm runoff, and potentially growing food. Green roofs do not, however, provide enhanced reflectivity and thus would have a negligible effect on global temperature if they were widely implemented.

Solar photovoltaic (PV) installations provide neither the reflectivity benefits of a cool roof nor the storm water management benefits of a green roof. However, PV installations can generate clean energy, an important benefit in our global effort to transition to a low-carbon energy economy. Because PV installations typically do not take up the entire surface of the roof, and sometimes require highly reflective roofing to ensure sufficient system efficiency, cool roofs and PV are complementary technologies.

Cool roofs, green roofs and PV are all excellent options for improving the environmental performance of a building. Which system or combination of systems is most appropriate for an individual roof will need to be evaluated on a case by case basis. We strongly believe that each of these options have an important role to play in reducing the environmental impact of our cities and see plenty of room for each solution to thrive.

We do want to point out, though, that cool metal roofs are by far the cheapest option of the three. They are at least an order of magnitude less expensive on a dollar per square foot basis than both green roofs and PV. When resources are available, we certainly encourage PV and/or vegetative roofs. However, we believe that cool roofs are a solution that can be more readily adopted by a larger percentage of cities globally.

Click here to learn more about COLOURCOIL® high performance pre-painted steel products for metal roofing.

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COOL QUESTION
Can insulation be as effective as a cool metal roof?
In most cases, the minimum level of insulation for construction is dictated by the building code. The required minimum R-values for ceiling insulation depend on the climate zone, where warmer climates require less insulation than cooler climates. Heat flows naturally from a warmer to a cooler space. During the cooling season, heat flows from outdoors to the building’s interior. Insulating ceilings or attics provides an effective resistance to the flow of heat.

A cool metal roof is designed to reflect away solar energy that strikes the surface. By reducing the solar heat gain at the start, a cool metal roof effectively reduces heat flow, as well. Lower attic temperatures from the use of a cool metal roof can actually improve the effectiveness of the insulation. Studies show that the R-value of insulation can exhibit variations as the temperature and humidity levels change. In all cases, a higher temperature leads to a lower effective R-value. Also, when insulation is compressed, the R-value is lower than the rated value. If a roof leaks, or allows air flow or condensation to form, the thermal efficiency of the insulation can be diminished. Thus, the synergy between roof/ceiling insulation and a weather tight, cool metal roof is very important.

Increasing the thickness, and the R-value, of roof insulation can certainly help to reduce heat gain and cooling energy requirements – but only up to a point of diminishing economic returns.

An effective and long lasting passive cooling system can be created by the combination of roof insulation and a cool metal roof. This combination will maximize the solar reflectance, reduce the roof surface temperature (as well as heat gain through the roof deck) and optimize the thermal properties of insulation.

It should be noted that the role of insulation on the interior side of the roof has little effect on mitigating urban heat island effects. Lowering the ambient air temperature by reducing the temperature of the roof surface with a product that has higher solar reflectance and thermal emittance is a more effective way to address the heat island effect.

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The planet is warming. Cool roofs can cool it down.
Greenhouse gases are warming our planet. According to the Intergovernmental Panel on Climate Change, the Earth’s average temperature is on track to increase by between 2 and 7 degrees Celsius (4 to 13 degrees Fahrenheit) this century, producing a climate never before experienced by human civilization. This rapid change in temperature is not only stressing ecosystems, but is also increasing the frequency and duration of heat waves, creating serious health risks to people around the world.

Over 60 percent of urban surfaces are covered by roofs or pavements. About 20 to 25 percent are roofs and 30 to 45 percent are pavements. Because these surfaces are dark and typically absorb over 80 percent of sunlight, our built environment heats cities and exacerbates the warming effects of climate change. Replacing roofs and pavements with more reflective materials could reverse this warming, turning urban surfaces into an asset instead of a burden.

Solar reflective metal roofing materials reflect more sunlight than conventional roofing materials, turning less of the sun’s energy into heat. Increasing the reflectance of our buildings and paved surfaces—whether through white surfaces or reflective coloured surfaces— can reduce the temperature of buildings, cities, and even the entire planet.

  • Cooler Buildings
    Highly reflective roofs can cool buildings, lowering their net energy use (cooling savings minus heating penalty) by 10 to 20 percent, if the building is air-conditioned.1 On buildings without air conditioning, a white roof can reduce inside temperatures by 2 to 3 degrees Celsius (4 to 5 degrees Fahrenheit), making buildings more comfortable and possibly saving lives in extreme heat waves.

White roofs reflect sunlight, keeping our buildings and cities cooler. For example, a white roof in temperate or tropical regions absorbs about 70% less sunlight than an ordinary roof. White roofs cool the human environment as well as the atmosphere, and reduce our need for air conditioning.

Not just white
Reflective surfaces do not need to be white. Materials such as Colourcoil high performance pre-painted steel for metal roofing with high solar-reflectance can come in a range of colours, including many shades of gray and red. Hence the term “cool metal roofs”.

  • Cooler Cities
    City-wide installations of reflective roofs and pavements reduce city temperatures. Studies show that cool surfaces, along with the planting of shade trees, can reduce a city’s air temperature by 2 to 3 degrees Celsius (4 to 5 degrees Fahrenheit), in summer months.
    2 This reduction not only makes the city more comfortable, but also improves the air quality because smog forms more readily on hot days. According to a study of the Los Angeles basin, a combination of lighter surfaces and shade trees could reduce exposure to unhealthy air by 10 percent.3
     

  • Cooler Planet
    Permanently replacing the world’s roofs and pavements with highly reflective materials will have a cooling effect equivalent to reducing green house gas emissions by 44 billion tonnes of CO2, an amount roughly equal to one year of global man-made emissions.
    4 Assuming the average car emits 4 tonnes of CO2 per year, these savings are roughly equivalent to taking all of the world’s approximately 1 billion cars off the road for 11 years.

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Nation-wide Seminars on “KOOL Energy Efficient Pre-Painted Steel for Metal Roofing”
Colourcoil Industries is currently organising a nationwide series of mini-seminars on “KOOL Energy Efficient Pre-Painted Steel for Metal Roofing”. These seminars are conducted at government and private offices and leading hotels at selected cities all over Malaysia.

This is a follow-up to the main seminar on the same topic, which was held in November 2010 at the Sabah state capital of Kota Kinabalu where more than 100 participants attended to special speaker, Mr. Scott Kriner, the President of Green Metal Consulting, Inc. in the United States of America.

In Sabah, the first seminar this year was held in the Island of Pearl, Labuan F.T. on March 4th at Tiara Hotel, Labuan followed by one in Sandakan on April 6th which was attended by developers, building designers and consultants, rolformers, architects and engineers from both the government and private sector. Meanwhile, in Peninsular Malaysia, the seminar has been conducted in Penang and Kedah on May 5th and 25th, respectively and both to the Jabatan Kerja Raya (JKR) or Public Works Department of the states. Among the major topics of concern highlighted to participants in all seminars were the need for Cool Metal Roofs for sustainable building designs and energy cost reduction, various concepts associated with it eg. Urban Heat Island effect, green building rating tools such as Malaysia’s Green Building Index and new trends in the pre-painted steel industry in general.


Seminar in Labuan

Seminar in Sandakan

Seminar at JKR Penang

Seminar at JKR Kedah

TAKE NOTE OF UPCOMING SEMINARS AT THESE LOCATIONS: Johor (June 2011) and in Tawau (July 2011)!

Should you wish to SIGN-UP to attend any of these upcoming FREE seminars, OR if you want Colourcoil Industries to conduct a presentation exclusively for your office/department, please email your name and mobile contact number to zyee@colourcoil.com and we shall be contacting you soon. Kindly inform us in advance should you wish to apply for CPD points on any of the seminars.

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Factory Visits
Colourcoil Industries was proud to have two visitations recently.

The first one was from the Sabah state’s Kementerian Kesihatan or Health Department of Sabah on 27 April 2011. They comprised of about 15 engineers from main headquarters in Kota Kinabalu whose main roles were to monitor all construction development of hospitals and clinics in the state.

The second visit we were delighted to have were more than 55 students and teachers from Sabah Tshung Tsin Secondary School. The group comprised of students from Form 5, Commerce Stream class.

Colourcoil Industries was indeed proud to be able to host the younger generation and future leaders of the state. For most of them, it was the first time visiting a manufacturing company. We wish them the best in their studies.

Should you wish to organize a technical or educational visit to Colourcoil Industries, we would be more than happy to have you. Write in to us with your contact number and we shall contact you soon to arrange it!

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Sabah IPEX
Colourcoil Industries was recently involved in the Sabah PAM’s Bi-Annual IPEX (International Property Exhibition) held between 21st – 24th April 2011 at the Sabah Trade Centre, Kota Kinabalu.

We are proud to continue to be the main sole sponsor for the Edible Architecture Competition, which had a theme this year of “Colours of Our City” and more than 15 entries. Main winner of the event was Sabah Institute of Art who won the RM1,500 grand prize and certificate. It is an event which Colourcoil Industries will continue to strongly support as it represents an event which encourages the usage of green, non-toxic materials in its ‘sustainable design’- a practice we incorporate in our production and manufacturing of our high performance pre-painted steel products. We congratulate all the winners and hope to see you all again with more innovative designs in the next 2 years’ IPEX!


Peter Wong, our Commercial Manager, congratulating the winners


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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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