i
without changing
their appearance.
This provides greater
thermal comfort all
year round whilst
using less energy
for air-conditioning
and hence mitigating
the UHI effect” he
says. “In addition
our product’s
outstanding dirt
resistance property
ensures the roof
looks newer for
longer. This also
assists in cooling.”
In a comparison
between a Clean
COLORBONDTM and
a conventional steel
roof, both uninsulated,
the positive effect
of dirt resistance
technology is
illustrated. Tests show
that after two years’
exposure, assuming
an irradiance of
1000W/m², exterior
temperature of 36°C
and a high thermal
emittance value of
0.86, typical of prepainted steels, the
Clean COLORBONDTM
steel roof’s
temperature is almost
10° cooler than the
conventional steel
roof and it radiates
more than 40W/m²
less heat down into
the building. This is a
considerable easing of
the HVAC load for any
building, regardless of
size. AD
Feature:
Roofing
TM
Clean COLORBOND steel’s dirt resistance also assists in cooling
ABOVE: Tests show that after two years’ exposure,
assuming an irradiance of 1000W/m², exterior temperature
of 36°C and a high thermal emittance value of 0.85, typical
of pre-painted steels, the Clean COLORBONDTM steel roof’s
temperature is almost 10° cooler than the conventional prepainted steel roof and it radiates more than 40W/m² less
heat down into the building.
africandesignmagazine.com
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