Connect with us
[the_ad id="89560"]

Opinion

When black roofs cost more and most negatively affect our health, why are we installing them?

Published

12 minute read

We are into construction season and summer and the heat is starting to be an issue. We will have some heat waves and we will notice the “Urban Heat Island Effect”.
The city will seem hotter than the county, but we will also notice differences in temperature between light coloured vehicles and darker coloured vehicles, and even the coolness of a white fence.
During heat waves some of the most vulnerable people are those living on the top floor of a building with a black roof.
My biggest question is why are we still putting black roofs on our buildings? Black roofs do not absorb heat in the winter under a foot of white snow. They absorb heat during the hot days making it hotter.

Let’s start at the beginning, by hitting the Google button.

What is the Heat Island Effect?
The elevated temperature in urban areas as compared to rural, less developed areas is referred to as the urban heat island effect. As cities grow and develop, more buildings and people are added. The process of urban development leads to this phenomenon.

What are the Implications of Heat Islands?
Heat islands are considered a form of local climate change as opposed to global climate change. The effects of heat islands are confined to specific areas, and do not have a larger impact on climate change. Despite being confined to a certain locality, heat islands can still make a significant impact.
Of course, one of the most noticeable impacts on urban dwellers is an increase in hot, summer weather. On particularly clear and hot days, when the heat island effect is at its worst, inhabitants of larger cities will notice hotter and more uncomfortable temperatures. When people are hot, they often crank up their air conditioners. Increases in air conditioning use not only results in more heat being released into the air, this also contributes to air pollution, as more greenhouse gas emissions are discharged. This negatively impacts air quality and can also lead to a surge in urban smog.
How Can We Reduce the Heat Island?
Since the impact of heat islands is mostly negative, scientists and researchers are searching for ways to reduce and reverse the effects. Dark roof surfaces are one of the major culprits of temperature increases. One popular technique for combating the heat island effect is installing green roofs on urban buildings. Green roofs, which are lined with soil and certain types of vegetation, can actually help cities regain some of the cooling and evaporative effects that the natural landscape once provided. As this idea becomes more popular, there is more and more scientific evidence that green roofs can reduce heat in urban areas.
Dark building surfaces that absorb more heat account for some of the rising temperatures in urban areas. One simple method for reducing this effect is to paint buildings with light or white colors that do not absorb nearly as much heat. Some cities are also using paint treatments that reflect light to combat the heat island effect. White, Green or Black Roofs? Berkeley Lab Report Compares Economic Payoffs
Looking strictly at the economic costs and benefits of three different roof types—black, white and “green” (or vegetated)—Lawrence Berkeley National Laboratory (Berkeley Lab) researchers have found in a new study that white roofs are the most cost-effective over a 50-year time span. While the high installation cost of green roofs sets them back in economic terms, their environmental and amenity benefits may at least partially mitigate their financial burden.
A new report titled “Economic Comparison of White, Green, and Black Flat Roofs in the United States” by Julian Sproul, Benjamin Mandel, and Arthur Rosenfeld of Berkeley Lab, and Man Pun Wan of Nanyang Technological University in Singapore, provides a direct economic comparison of these three roof types. The study will appear in the March 2014 volume of Energy and Buildings and has just been published online. “White roofs win based on the purely economic factors we included, and black roofs should be phased out,” said study co-author Rosenfeld, a Berkeley Lab Distinguished Scientist Emeritus and former Commissioner of the California Energy Commission
The study analyzes 22 commercial flat roof projects in the United States in which two or more roof types were considered. The researchers conducted a 50-year life cycle cost analysis, assuming a 20-year service life for white and black roofs and a 40-year service life for green roofs.
A green roof, often called vegetated roofs or rooftop gardens, has become an increasingly popular choice for aesthetic and environmental reasons. Rosenfeld acknowledges that their economic analysis does not capture all of the benefits of a green roof. For example rooftop gardens provide storm water management, an appreciable benefit in cities with sewage overflow issues, while helping to cool the roof’s surface as well as the air. Green roofs may also give building occupants the opportunity to enjoy green space where they live or work.
Berkeley Lab Distinguished Scientist Emeritus Art Rosenfeld
“We leave open the possibility that other factors may make green roofs more attractive or more beneficial options in certain scenarios,” said Mandel, a graduate student researcher at Berkeley Lab. “The relative costs and benefits do vary by circumstance.”
However, unlike white roofs, green roofs do not offset climate change. White roofs are more reflective than green roofs, reflecting roughly three times more sunlight back into the atmosphere and therefore absorbing less sunlight at earth’s surface. By absorbing less sunlight than either green or black roofs, white roofs offset a portion of the warming effect from greenhouse gas emissions.
“Both white and green roofs do a good job at cooling the building and cooling the air in the city, but white roofs are three times more effective at countering climate change than green roofs,” said Rosenfeld.
White roofs are most cost-effective
The costs and benefits difference stack that has the highest net present value shows the roof type that is most cost-effective.
The 50-year life-cycle cost analysis found that even the most inexpensive kind of green roof (with no public access and consisting of only sedum, or prairie grass) costs $7 per square foot more than black roofs over 50 years, while white roofs save $2 per square foot compared to black roofs. In other words, white roofs cost $9 per square foot less than green roofs over 50 years, or $0.30 per square foot each year.
The researchers acknowledge that their data are somewhat sparse but contend that their analysis is valuable in that it is the first to compare the economic costs and energy savings benefits of all three roof types. “When we started the study it wasn’t obvious that white roofs would still be more cost-effective over the long run, taking into account the longer service time of a green roof,” Mandel said.
Furthermore while the economic results are interesting, it also highlights the need to include factors such health and environment in a more comprehensive analysis. “We’ve recognized the limitations of an analysis that’s only economic,” Mandel said. “We would want to include these other factors in any future study.”
Black roofs pose health risk
For example, black roofs pose a major health risk in cities that see high temperatures in the summer. “In Chicago’s July 1995 heat wave a major risk factor in mortality was living on the top floor of a building with a black roof,” Rosenfeld said.
For that reason, he believes this latest study points out the importance of government policymaking. “White doesn’t win out over black by that much in economic terms, so government has a role to ban or phase out the use of black or dark roofs, at least in warm climates, because they pose a large negative health risk,” he said.
Rosenfeld, who started at Berkeley Lab in the 1950s, is often called California’s godfather of energy efficiency for his pioneering work in the area. He was awarded a National Medal of Technology and Innovation by President Obama in 2012, one of the nation’s highest honours.
Rosenfeld has been a supporter of solar-reflective “cool” roofs, including white roofs, as a way to reduce energy costs and address global warming. He was the co-author of a 2009 study in which it was estimated that making roofs and pavements around the world more reflective could offset 44 billion tons of CO2 emissions. A later study using a global land surface model found similar results: cool roofs could offset the emissions of roughly 300 million cars for 20 years.
So if black roofs are detrimental to our health, contribute to the issue of Urban Heat Island Effect and costs more, why are we still building black roofs?

Business

California planning to double film tax credits amid industry decline

Published on

From The Center Square

By

California legislators have unveiled a bill to follow through with the governor’s plan of more than doubling the state’s film and TV production tax credits to $750 million.

The state’s own analysis warns it’s likely the refundable production credits generate only 20 to 50 cents of state revenue for every dollar the state spends, and the increase could stoke a “race to the bottom” among the 38 states that now have such programs.

Industry insiders say the state’s high production costs are to blame for much of the exodus, and experts say the cost of housing is responsible for a significant share of the higher costs.

The bill creates a special carve-out for shooting in Los Angeles, where productions would be able to claim refundable credits for 35% of the cost of production.

California Gov. Gavin Newsom announced his proposal last year and highlighted his goal of expanding the program at an industry event last week.

“California is the entertainment capital of the world – and we’re committed to ensuring we stay that way,” said Newsom. “Fashion and film go hand in hand, helping to express characters, capture eras in time and reflect cultural movements.”

With most states now offering production credits, economic analysis suggests these programs now produce state revenue well below the cost of the credits themselves.

“A recent study from the Los Angeles County Economic Development Corporation found that each $1 of Program 2.0 credit results in $1.07 in new state and local government revenue. This finding, however, is significantly overstated due to the study’s use of implausible assumptions,” wrote the state’s analysts in a 2023 report. “Most importantly, the study assumes that no productions receiving tax credits would have filmed here in the absence of the credit.”

“This is out of line with economic research discussed above which suggests tax credits influence location decisions of only a portion of recipients,” continued the state analysis. “Two studies that better reflect this research finding suggest that each $1 of film credit results in $0.20 to $0.50 of state revenues.”

“Parks and Recreation” stars Rob Lowe and Adam Scott recently shared on Lowe’s podcast how costs are so high their show likely would have been shot in Europe instead.

“It’s cheaper to bring 100 American people to Ireland than to walk across the lot at Fox past the sound stages and do it and do it there,” said Lowe.

“Do you think if we shot ‘Parks’ right now, we would be in Budapest?” asked Scott, who now stars in “Severance.”

“100%,” replied Lowe. “All those other places are offering 40% — forty percent — and then on top of that there’s other stuff that they do, and then that’s not even talking about the union stuff. That’s just tax economics of it all.”

“It’s criminal what California and LA have let happen. It’s criminal,” continued Lowe. “Everybody should be fired.”

According to the Public Policy Institute of California, housing is the single largest expense for California households.

“Across the income spectrum, 35–44% of household expenditures go to covering rent, mortgages, utilities and home maintenance,” wrote PPIC.

The cost of housing due to supply constraints now makes it nearly impossible for creatives to get their start in LA, said M. Nolan Gray, legislative director at housing regulatory reform organization California YIMBY.

“Hollywood depends on Los Angeles being the place where anybody can show up, take a big risk, and pursue their dreams, and that only works if you have a lot of affordable apartments,” said Gray to The Center Square. “We’ve built a Los Angeles where you have to be fabulously wealthy to have stable and decent housing, and as a result a lot of folks either are not coming, or those who are coming need to paid quite a bit higher to make it worth it, and it’s destroying one of California’s most important industries.”

“Anybody who arrived in Hollywood before the 2010s, their story is always, ‘Yeah, I showed up in LA, and I lived in a really, really  dirt-cheap apartment with like $10 in my pocket.’ That just doesn’t exist anymore,” continued Gray. “Does the Walt Disney of 2025 not take the train from Kansas City to LA? Almost certainly not. If he goes anywhere, he goes to Atlanta.”

Continue Reading

Business

Trump orders 10% baseline tariff on imports, closes de minimis loophole

Published on

From The Center Square

By 

Reciprocal tariffs higher on many nations

President Donald Trump on Wednesday put the biggest piece of his new trade policy in effect by signing executive orders that place a 10% baseline tariff on all imports and much higher rates on nations that put taxes on U.S. products.

It could be the opening salvo in a global trade war, or, as Trump sees it, the beginning of a “Golden Age” for U.S. trade.

Trump also closed the small value packages loophole that allowed China to avoid taxes on packages valued at less than $800. Companies such as Temu and Shein used the loophole to ship billions of dollars worth of products directly to U.S. consumers and avoid paying the tax, as The Center Square previously reported.

President Trump speaks about tariffs at a Make America Wealthy Again event

Trump’s moves on Wednesday, which he termed “Liberation Day” for U.S. trade, marked the most significant shift in U.S. trade policy since the end of World War II.

In a speech from the White House’s Rose Garden, Trump said foreign nations for decades have stolen American jobs, factories and industries. He said the tariffs would bring in new jobs, factories and industries and return the U.S. to a manufacturing superpower.

“Our country and its taxpayers have been ripped off for more than 50 years,” Trump said. “But it is not going to happen anymore.”

Trump’s supporters praised the trade overhaul. U.S. Rep. Marjorie Taylor Greene said it was time for foreign nations to pay up.

“If you want to do business in America, you need to play by our rules,” she said. “For too long, American businesses, big and small, have been ripped off by bad trade deals and unfair competition. President Trump is putting a stop to it. He’s standing up for our workers, our companies and our consumers.”

Critics slammed Trump’s trade plans.

“Donald Trump may want to call this ‘Liberation Day,’ but there is nothing liberating for working families who are grappling with the high costs of food, housing, and utilities,” said Illinois Gov. J.B. Pritzker, a Democrat. “Tariffs are a tax. They are a tax on working families, a tax on groceries, and a tax on other everyday necessities.”

Other countries planned their own responses. The European Union plans to retaliate with its own measures.

“Europe has not started this confrontation,” EU boss Ursula von der Leyen said in a speech. “We do not necessarily want to retaliate but, if it is necessary, we have a strong plan to retaliate and we will use it.”

She said tariffs are taxes “paid by the people.”

“But Europe has everything to protect our people and our prosperity,” she wrote on X. “We will always promote & defend our interests and values. And we will always stand up for Europe.”

China, the world’s second-largest economy, said Monday that it was planning to coordinate its response to U.S. tariffs with Japan and South Korea.

Japan’s Prime Minister Shigeru Ishiba said Tuesday that he was willing to fly to the U.S. to meet with Trump to get an exemption for Japanese vehicle makers. He also said the government will take steps to minimize the impact of U.S. tariffs on Japanese industries and jobs.

Trump will impose a 10% tariff on all countries that will take effect April 5, 2025 at 12:01 a.m. EDT. Trump will impose an individualized reciprocal tariff on the countries with which the United States has the largest trade deficits, including China, India and Vietnam, among others. All other countries will continue to be subject to the 10% tariff baseline, according to the White House.

“These tariffs will remain in effect until such a time as President Trump determines that the threat posed by the trade deficit and underlying nonreciprocal treatment is satisfied, resolved, or mitigated,” according to a White House fact sheet.

Trump’s executive order also gives him authority to increase the tariffs

“if trading partners retaliate” or “decrease the tariffs if trading partners take significant steps to remedy non-reciprocal trade arrangements and align with the United States on economic and national security matters,” according to the White House.

“Foreign cheaters have stolen our jobs, ransacked our factories and foreign scavengers have torn apart our once beautiful American dream,” Trump said in the Rose Garden.

For China, the tariff rate will be about 34% on imports from the world’s most populous nation. For European Union countries, it will be 20%. For Japan, the duty will be 24%. Imports from India will get a 26% tariff. Cambodia will get hit with a 49% tariff, among the highest Trump outlined on Wednesday.

For months, the U.S. Chamber of Commerce has warned that tariffs could increase costs for U.S. consumers and hurt businesses. Neil Bradley, the chamber’s chief policy officer, said businesses large and small don’t want tariffs.

“What we have heard from business of all sizes, across all industries, from around the country is that these broad tariffs are a tax increase that will raise prices for American consumers and hurt the economy,” he said.

Last week, Trump announced a 25% tariff on imported automobiles and auto parts, duties that he said would be “permanent.” The White House said it expects the auto tariffs on cars and light-duty trucks will generate up to $100 billion in federal revenue.

Trump said he hopes to bring in $600 billion to $1 trillion in tariff revenue in the next year or two. Trump also said the tariffs would lead to a manufacturing boom in the U.S., with auto companies building new plants, expanding existing plants and adding jobs.

Continue Reading

Trending

X