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Colourcoil KOOL
Colour Charts - What's new inside
Find out what new information is
inside our new colour palettes and how to tell whether the
colours are solar-reflective.
Colourcoil's
flagship high performance pre-painted steel products,
PVF2 SeriesTM and METALLIC PVF2 SeriesTM,
& Duotone SeriesTM for the downstream manufacturing of cool metal roofs, now
come in a wide range of cool and exciting solar-reflective colours. Not only that, they come with warranties of 20 yrs
against colour fading and 25yrs against corrosion.
The following picture shows what
new information are available inside the new colour charts.
Click here to learn more about Colourcoil Kool
energy-efficient pre-painted steel products and
contact us for the coolest product under the sun.
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Green Building
Index - Solar Reflective Index (SRI) requirements for
roof
(The Solar Reflective Index is a
measure of the constructed surface’s ability to reflect
solar heat, as shown by a small temperature rise. It is
defined so that a standard black (reflectance 0.05,
emittance 0.90) is 0 and a standard white (reflectance 0.80,
emittance 0.90) is 100. SRI is calculated according to ASTM
E 1980 using values for reflectance and emissivity).
Similar to
LEED rating program, a metal roof manufactured using PVF2
Series or METALLIC PVF2 Series pre-painted steel can
qualify for one point in SM12 Design under Sustainable Site
Planning & Management category if it covers at least 75% of
the roof surface area (excluding parapets, skylights and
equipment) and meets the following criteria for Solar
Reflectance Index (SRI) values:
Low slope (< 2:12) min SRI of 78
Steep slope ( > 2:12) min SRI of 29
The following
is an extract from GBI Assessment Criteria for
Non-Residential New Construction (NRNC).
For more info,
please visit
Green Building Index website.
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COOL QUESTION
How does solar reflectance of metal roofing compares to
other roofing material?
(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)
The solar reflectance of
metal roofing is a function of the surface of the product.
Metal roofing can be offered with pre-painted surfaces,
natural or mill finishes, and even granular-coated surfaces.
A mill finish such as unpainted Aluminum-Zinc coated steel sheet has a solar
reflectance of 0.68-0.78 depending on the surface treatment
used. Other natural metals such as zinc, copper and aluminum
have somewhat lower solar reflectance values. When a paint
system is applied to metal roofing, the solar reflectance
depends on the color and type of pigment in the paint film.
Reflectance values can range from 0.10 up to greater than
0.75. Granular-coated metal roofing can have solar
reflectance values of 0.05 to 0.30 depending on pigment and
glazing used on granules.
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Solar Reflectance |
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Metal Unpainted |
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0.50 - 0.80 |
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Metal Painted |
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0.10 - 0.75* |
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Comp Asphalt Shingles |
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0.05 - 0.28 |
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Black EPDM |
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0.05 - 0.10 |
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Single Ply Membrane |
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0.70 - 0.80 |
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Smooth Modified Bitumen |
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0.05 - 0.25 |
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White Granular Bitumen |
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0.20 - 0.30 |
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Concrete/Clay Tile |
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0.20 - 0.75* |
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*Depends on colour & pigment
Source: ORNL and LBNL database |
In comparison to these
values, asphalt shingle has a relatively low solar
reflectance of 0.05-0.28 even with cool granules. Single-ply
membranes in light colors have high initial solar
reflectance values but some are prone to dirt pick-up which
can reduce the aged reflectance values. Darker roofing
products such as BUR have low solar reflectance values due
to their color. The above
table, which is a compilation of data from ORNL and LBNL
summarizes the differences.
Let us look at
concrete/clay tile and painted metal roof. The upper
limits for solar reflectance may look to be equal but there
is a difference when we compare attic temperatures and
energy usage.
Monitoring the
attic temperatures over the course of time also shows how
the roof products heat up and cool down during a day. This
curve shows that the white painted metal roof reaches a
slightly higher peak temperature compared to a white tile
roof (due to the difference in the solar reflectance),
however in the afternoon and early evening hours, the metal
roof, with lower thermal mass, dissipates its heat better
than the tile. What this means is that the homeowner will
realize lower air conditioning usage in the late afternoon
and early evening hours when compared to a tile roof system.
Results from experiments (i.e. experiments on various white
coloured types of roofing material) showed that white painted
cool metal roof
can save 23% in cooling energy, which was the highest of the
roof systems tested.
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SEMINAR on "Kool
energy-efficient pre-painted steel for metal roofing"
Colourcoil Industries
successfully organized its “KOOL Energy-Efficient
Pre-Painted Steel For Metal Roofing” Seminar on 13th
November 2010 at a leading hotel and resort in Kota Kinabalu,
Sabah. The event was supported by the Persatuan Arkitek
Malaysia (PAM) Sabah Chapter or the Sabah Branch Malaysian
Institute of Architects, and was graced by the presence of
its Chairman, Ar. Ho Jia Lit and also Ar. Von Kok Leong,
President of the
Malaysian Green Building Confederation (MGBC),
Malaysia’s green building rating council of which Colourcoil
Industries is an Industry Partner of.
Comparison of surface and attic
temperatures between
solar reflective and ordinary colour coated panels
(i.e. both panels of the same colour) |
Display showing some of the new colours in different
profiles |
More than 100
participants attended the event comprising mostly
professional consultants such as architects, engineers and
surveyors from both the private and public sectors.
At his
opening speech, one of the directors for Colourcoil
Industries, Mr. James Lok announced that the company had
just been awarded with the ISO 9001: 2008 Quality Management
System and UKAS certification. He also proudly announced
that Colourcoil Industries made headlines in 2000 when the
company was first set-up, for that time being the 1st
coil-coater in the Asia Pacific region to have incorporated
Infra-red technology in its curing process, and is now also
creating headlines by currently being the only coil-coating
company in the Asia region to become an Energy Star Partner.
He added that as the only coil-coater in Sabah, Colourcoil
Industries strives to continuously develop new products, improve the overall quality and
standard of pre-painted steel for applications especially in
the roofing and wall cladding industry. Hence one of the
reasons why Colourcoil took the initiative in organizing
this debut seminar.
More than 100 participants registered for the
seminar |
Opening speech by our Director. James
Lok |
Special
invited speaker, Mr. Scott Kriner who is President of Green
Metal Consulting Inc., was flown in all the way from the
United States of America to deliver a presentation on topics
related to cool metal roofing. Among the major highlights of
his presentation included energy concerns, world green
building rating programs, the current local and global
initiatives and emerging trends of metal roofing.
We are
delighted on the overall positive feedback received from
participants of the seminar who have stated among others
that it helped them to further understand the concept and
principles behind energy-efficient metal roofing, its
benefits and applications as well as how it applies to the
local market conditions.
Scott giving his presentation |
Scott chatting with with some of the
architects |
Mr. Kriner’s
presentation was then followed by a brief presentation by
Mr. Peter Wong, Commercial Manager for Colourcoil
Industries. Mr. Wong presented to the participants on the
high performance pre-painted steel products manufactured by
Colourcoil Industries which meet the Green Building Index (GBI)
requirements and the Energy Star requirements. The products
include colour coatings from the PVF2 Series, Metallic PVF2
Series and Duotone PVF2 Series. The GBI is overseen by the
MGBC and is the nation’s green building rating tool.
MGBC
President, Ar. Von Kok Leong took this opportunity to
congratulate and present to Colourcoil Industries its
membership certification, which was received by Mr. Roger
Ling, one of its directors.
Peter presenting Colourcoil's latest
energy-efficient, solar reflective pre-painted steel
products for metal roofing |
Our Director, Roger Ling receiving membership
certification from
MGBC President, Ar. Von Kok Leong |
Lucky draws
were held prior to the serving of lunch at the hotel’s
prominent restaurant. The 3 lucky draws were won by Anneline
Eugenie Robinson Stabal (quantity surveyor from Pasukan
Project Sabah / Sabah Project Team), Eddie Tann Chung Yong
(architect from GC Architects) and Ar. Henry Chu Sui Tshee
(principal architect from Arkitek OMA Sdn Bhd). Each winner
happily brought back a BlackBerry 8520 mobile phone.
PAM (Sabah Chapter) Chairman, Ar. Ho
Jia Lit with
Suzie and Zyee (chief organizing chairperson)
conducting the lucky draw |
Group photo with Scott Kriner, PAM (Sabah Chapter)
Chairman, MGBC President, our board of Directors,
Peter (Commercial Manager) & Zyee (Senior Sales &
Marketing) |
Colourcoil
Industries wishes to thank PAM Sabah Chapter for their
continuous support in its activities and programmes, and the
participants who took the time to attend this significant
seminar. The management also wishes to thank all its staff
and personnel who were involved in the organizing of this
successful event.
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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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