California Energy Commissioner Arthur H. Rosenfeld, who has been called the father
of energy conservation in the state, says his office is now working on regulations
that would require all new roofs in the state to be white, because they absorb less
heat and cut air-conditioning bills. "The pharaohs and the Greeks have known this
for 5,000 years," he says. Regulations presently call for flat roofs to be white.
Elastomeric coatings reflect 90% of the sun's rays and will reduce the indoor
temperature by 7 degrees according the independent research laboratory MER
Corporation.
Roofing paints, such as those manufactured by Hy-Tech are already available and
cost around .50 a square foot to apply including the primer coat.
An elastomeric roof coating creates a uniform, seamless surface that remains flexible
even at low temperatures. It expands and contracts with changing weather
conditions, protecting a roof’s surface from the sun’s damaging rays. This enables
the coating to handle the continuous thermal stresses over the lifetime of the roof.
Its adhesion characteristics enable the coating to remain attached to the roof in wet
or extremely windy conditions. Such a coating employs technology (to resist dirt pick-
up) that helps maintain energy-saving reflectance qualities, as well as a bright, clean
appearance.
On existing buildings, elastomeric roof coatings do not add “dead load” or weight to
the roof. The roof coating can be applied without being counted as an additional
layer for code purposes. This mitigates the cost of disposal from tear-off and
contributes to dollars saved by the building owner.
Real savings come from reducing air conditioning expenses. For an average structure
in a warmer climate the cost difference between a white and black roof can be
recouped in a matter of a year or two, according to Atlanta roofing consultant Patrick
Downey.
Some elastomeric roof coatings also contain tiny ceramic beads. The beads have not
been proven to increase reflectivity, but they do make the coating more durable.
of energy conservation in the state, says his office is now working on regulations
that would require all new roofs in the state to be white, because they absorb less
heat and cut air-conditioning bills. "The pharaohs and the Greeks have known this
for 5,000 years," he says. Regulations presently call for flat roofs to be white.
Elastomeric coatings reflect 90% of the sun's rays and will reduce the indoor
temperature by 7 degrees according the independent research laboratory MER
Corporation.
Roofing paints, such as those manufactured by Hy-Tech are already available and
cost around .50 a square foot to apply including the primer coat.
An elastomeric roof coating creates a uniform, seamless surface that remains flexible
even at low temperatures. It expands and contracts with changing weather
conditions, protecting a roof’s surface from the sun’s damaging rays. This enables
the coating to handle the continuous thermal stresses over the lifetime of the roof.
Its adhesion characteristics enable the coating to remain attached to the roof in wet
or extremely windy conditions. Such a coating employs technology (to resist dirt pick-
up) that helps maintain energy-saving reflectance qualities, as well as a bright, clean
appearance.
On existing buildings, elastomeric roof coatings do not add “dead load” or weight to
the roof. The roof coating can be applied without being counted as an additional
layer for code purposes. This mitigates the cost of disposal from tear-off and
contributes to dollars saved by the building owner.
Real savings come from reducing air conditioning expenses. For an average structure
in a warmer climate the cost difference between a white and black roof can be
recouped in a matter of a year or two, according to Atlanta roofing consultant Patrick
Downey.
Some elastomeric roof coatings also contain tiny ceramic beads. The beads have not
been proven to increase reflectivity, but they do make the coating more durable.
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Alternative-Heating-Info.com
Elastomeric Roof Coating
A long-term, economical
roofing solution often
overlooked is acrylic roof
coatings.
California’s Title 24 law has
increased awareness of the
energy-saving benefits white
roof coatings offer.
These coatings can be
applied to traditional roofing
systems using a brush,
heavy nap roller or industrial
sprayer.
roofing solution often
overlooked is acrylic roof
coatings.
California’s Title 24 law has
increased awareness of the
energy-saving benefits white
roof coatings offer.
These coatings can be
applied to traditional roofing
systems using a brush,
heavy nap roller or industrial
sprayer.