Cool roofs are required on most new non-residential buildings in California, but the regulation may be worsening smog.
Cool roofs combat the urban heat island effect by reflecting heat back into the atmosphere. But they also reflect more ultra-violet (UV) light back into the atmosphere, creating more favorable conditions for the chemical reaction that forms ozone or smog.
Southern California would violate federal particulate matter standards for an additional two days a year if cool roofs are widely adopted throughout the region, according to a study by the state’s South Coast Air Quality Management District. Smog would also worsen, especially in Riverside and San Bernardino Counties.
Nevertheless, a researcher for the air quality district said the benefits of cool roofs including lower energy bills, reduced energy consumption, and fewer people suffering from heat-related illnesses would likely outweigh the drawbacks.
Related Stories
Codes and Standards | Jun 20, 2018
Home values and local tax revenues at risk from high tide flooding, scientists group says
Analysis of property data identifies communities prone to frequent flooding.
Codes and Standards | Jun 19, 2018
Structural engineered wood products exempt from new EPA formaldehyde ruling
Exempt products include structural plywood, oriented strand board (OSB).
Codes and Standards | Jun 18, 2018
Seattle City Council repeals controversial new per-worker tax on large employers
Measure was aimed at raising $50 million for homeless services, affordable housing.
Codes and Standards | Jun 14, 2018
Hardscape from development makes ‘1,000-year’ flood in Maryland worse
Impermeable concrete made it easier for water to overwhelm drainage system.
Codes and Standards | Jun 13, 2018
United States Resiliency Council announces support for Calif. earthquake resiliency bill
Measure would help cities identify structures that could fail in major quake.
Codes and Standards | Jun 12, 2018
Congestion pricing for cars is effective in reducing traffic, but a difficult sell
After three years, traffic congestion declined by 30% in London.
Codes and Standards | Jun 11, 2018
First RFP requiring modular construction on New York City housing project issued
Part of Housing 2.0 modular construction initiative.
Codes and Standards | Jun 6, 2018
Buffalo, N.Y., contractor exec pleads guilty to fraud for bid rigging on $750 million contract
LPCiminelli stops functioning as GC in fallout from the case.
Codes and Standards | Jun 6, 2018
LEED should be updated to combat climate change
Hasn’t kept pace with urgency of problem, says clean energy investor.
Codes and Standards | Jun 5, 2018
Sports stadiums and arenas showcase sustainability features
Green venues save owners money, gain positive publicity.
