JUN 2010

www.colourcoil.com

   Volume 5, Issue 3   

Editor's Note

As most of our reades now know, Colourcoil Industries is the 1st pre-painted steel manufacturer in Malaysia to become a U.S ENERGY STAR partner. In line with this, our up and coming newsletters will feature more articles on "cool metal roofs".

In this month's issue we will explain how our energy star compliant products will easily meet the requirements of Green Rating Programs such as Malaysia's GBI (Green Building Index) as well as those from LEEDS (Leadership in Energy and Environmental Design).

For our new readers or readers who have missed the previous two issues, we have also included a short article on what is a cool metal roof.

Thank you.

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

 

 
 

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 4 Oct 2009
Vol 4. Issue 5 Dec 2009
Vol 5. Issue 1 Feb 2010
Vol 5. Issue 2 Apr 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
    Lumpur

k) Energy Savings with Cool Metal
    Roofs

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

m) IKRAM Certification

n) Colourcoil recognized as an
    ENERGY STAR PARTNER

o) Radiative properties of cool
    metal roofs

Click here to view archives

 
 

Contacts

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

www.colourcoil.com
info@colourcoil.com

ARTICLES
Meeting Energy Star® Solar-Reflective Roofing Requirements

KYNAR 500® Resin is the Best Choice for "cool metal roofs"
What is a Cool Metal Roof
Colourcoil Website Upgraded - New Video Clip
Exhibition - ARCHIDEX 2010
Need more Info?

MEDIA

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Meeting Energy Star® Solar-Reflective Roofing Requirements
These days we are trying to be more energy conscious. One of the best changes we can make to lower energy consumption is to change our roofing material to a coated metal roof that will reflect the sun’s rays, lowering the amount of energy that you use to cool your home.

As you know, Colourcoil Industries is now a U.S Energy Star Partner (see previous newsletter). In order to qualify, our high performance pre-painted steel used for the downstream manufacturing of "Cool Metal Roofs" must conform to the required specifications as laid out by U.S EPA (Environmental Protection Agency) and DOE (Department of Energy).

  Key Product Criteria

Equipment Specification
Roofing
  • Low Slope roofs must have an initial solar reflectance of >= 0.65. After 3 years, the solar reflectance must be >= 0.50.
  • Steep Slope roofs must have an initial solar reflectance of >= 0.25. After 3 years, the solar reflectance must be >= 0.15.

Roof Surface:
The uppermost part of the roof system that is in direct contact with solar radiation.

Low-Slope Roofs:
Surfaces with a slope of 2:12 inches or less. (As defined in ASTM Standard E 1918-97).

Steep-Slope Roofs:
Surfaces with a slope greater than 2:12 inches.

Solar Reflectance:
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 from 0 to 1.0. A value of 0 indicates that the material absorbs all solar energy and a value of 1.0 indicates total reflectance.
 

Some Comments:
 (1) Take note that in order to qualify for Energy Star, there are two Solar Reflectance (SR) values;
      one at the time of installation and one 3 years after installation. This means that home owners
      will get the most benefit from a metal roof whose solar-reflective colours last the longest. Once
      the colour on the roof has faded, the solar-reflective properties are lost.

 (2) The solar reflectance (SR) values mentioned above differ from the requirements of Malaysia's
      Green Building Index (GBI) or LEEDS (Leadership in Energy and Environmental Design). GBI
      or LEEDS require a value call SRI (Solar reflective index). 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. Only SRI
      value at the time of installation is required. There are no requirements for SRI values after
      installation. (see previous article on radiative properties of cool metal roofs)

 (3) Products meeting Energy Star® requirements will easily meet GBI or LEEDS solar reflective
      requirements.

 (4) Where are this SR or SRI values published? Pre-painted or colour coated steel manufacturers
      will have both values of SR & SRI published in their colour charts.   

Whether you are environmental or just like to save money, a metal roof manufactured using  COLOURCOIL® Kool, Energy Star compliant pre-painted steel can help you achieve both these tasks, and will help your home stay cooler in the summer months. At the same time you are reducing your fossil fuel consumption by using less energy to cool your home.

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KYNAR 500® Resin Coatings are the Best Choice for "cool metal roofs"Kynar 500
COLOURCOIL PVF2 and METALLIC PVF2 Series pre-painted steel solar reflective colour coatings are manufactured using Kynar 500® resin. In this article we will explain why Kynar 500® resin based coating is really the best choice for the downstream manufacturing of "cool metal roofs".

The proven durability of full strength 70% Kynar 500® resin type paint systems allows for stable color and film integrity over decades of exposure. This durability is also seen in the retained amount of initial solar reflectance. Thus, paint systems based on the Kynar 500® resin have a surface that does not retain dirt, remains cool, and retains its original color better than any other resin type.

In the design and performance of a building, the owner wants to know that the initial energy cost savings projections are maintained over the life of the roof. Most other roof types have been documented to lose some percentage of their initial solar reflectance due to dirt pick up and overall degradation from the weather. In those cases, the aged performance of these cool roofs is far from what the building experiences in the early years. The strong performance of Kynar 500
® based paint system which is maintained over time is especially apparent in the retention of the initial solar reflectance of cool Kynar 500 based pre-painted paint systems. In research conducted by Oak Ridge National Laboratory on behalf of the Cool Metal Roofing Coalition Kynar 500® based pre-painted metal test panels exposed in South Florida were found to retain 95% of their original solar reflectance over more than 30 years. Typically, dirt pick-up and retention is responsible for many roof products' solar reflectance dropping over time. This is also true for some conventional resins used for pre-painted metal roofing. However, Kynar 500 based pre-painted metal roofing readily sheds dirt and does not promote the formation of algae or other microbial growth on the surface which could lower the solar reflectance.

A cool Kynar 500® based pre-painted metal roof product has the best protection against color fade, chalk and erosion of gloss AS WELL AS having the highest solar reflectance of a color formulated in any other paint resin type. When selecting a durable solar-reflective pre-painted steel material for your next roofing project, there really are no better choices than Colourcoil Industries' flagship products, COLOURCOIL PVF2 Series and METALLIC PVF2 Series.

Find out more about Colourcoil high performance pre-painted steel products......

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What is a Cool Metal Roof?
For the benefit of our new readers or those who missed our previous articles, here is a short article on what cool metal roofs are about.

Cool roofing is defined differently by various performance criteria in codes, standards, and incentive programs. In general, a cool roof is one that has relatively high solar reflectance and high thermal emittance.

During the daylight hours, a roof is constantly subjected to solar energy striking its surface. The term “Solar Reflectance” is a measure of the amount of that solar energy that is immediately reflected from the surface. It is not reflected heat, but reflected electromagnetic energy from the sun. Solar reflectance is reported as a decimal (0 – 1.00) or as a percentage (0-100%). The solar energy that is not reflected away from the surface is absorbed into the outer surface of the roof product and is converted into heat. The heat can be removed by convection as air flows over the surface, or by conduction through the roof material into the sheathing below. The energy that is left can also be re-emitted to the night sky in the form of infrared energy. That re-emitted energy is referred to as thermal emittance, which is also expressed as a decimal (0 – 1.00) or as a percentage (0-100%).

A cool metal roof with high solar reflectance and high thermal emittance would have a lower surface temperature as compared to a roof with low reflectance and low emittance. In the case of a cool metal roof, a lower surface temperature translates into less heat gain into the attic space or living space below the roof. The result is a cooler living space and lower cooling/heating energy consumption.

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COLOURCOIL WEBSITE UPGRADED
Colourcoil website has just been upgraded to improve site visitor's  viewing experience with Windows Explorer 8 where visitors can use the zoom tool located at the bottom of the webpage.

A new video clip has been added to the website. To find out why architects prefer Kynar 500 metal coatings, click here to view the video.   

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Exhibition - ARCHIDEX 2010
Colourcoil Industries will be participating in the upcoming Archidex2010 which will be held at the Kuala Lumpur Convention Center in Malaysia. We hope to see you at our booth as you will be able to see our high performance pre-painted steel that comes in a wide range of new and exciting solar-reflective colours. Our dedicated team of marketing staff will be there to answer any questions you may have. We are located at

Booth number: #6792 - 6794

See you there!

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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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