Paris is known for its dreamy skyline of grey-blue zinc roofs, but for the thousands of Parisians living in attic apartments beneath them, this summer's historic heatwave has turned those charming rooftops into a nightmare. As temperatures across France soar, the city's distinctive architecture is proving ill-suited to a warming climate.
The Heat Trap Under the Roofs
Zinc, a metal that covers many of the capital's rooftops, absorbs and radiates heat intensely. In attic apartments—often called chambres de bonne (maid's rooms)—the lack of insulation and direct exposure to the roof means indoor temperatures can exceed 40°C, even when outside temperatures are lower. Residents describe the experience as living inside an oven, with little relief at night.
“It's unbearable,” says Marie Dubois, a 28-year-old graphic designer living in a 15-square-metre attic in the 10th arrondissement. “The roof is just above my bed. I can't sleep, I can't work. I've tried fans, but they just blow hot air.” Her story is echoed by many across the city, where such apartments are often the only affordable option for young professionals and students.
The problem is not new, but the frequency and intensity of heatwaves in France are accelerating. France Swelters Under Extreme Heat: Power Cuts in Finistère, Wildfire Alerts Across Centre reported that temperatures in parts of the country have broken records, with Paris hitting 42.6°C in July 2023. This year, the city has already seen multiple heat alerts, and the trend is expected to worsen.
Urban Design and Climate Adaptation
Paris's zinc roofs are a defining feature of the city's 19th-century Haussmannian architecture, protected by strict planning laws. But their thermal performance is increasingly questioned. Unlike traditional slate or tile roofs, zinc heats up quickly and cools slowly, turning attics into heat traps. The city's urban planning authorities are under pressure to find solutions without compromising the historic skyline.
Some architects advocate for green roofs or white-painted surfaces to reflect sunlight, but these are often incompatible with the city's heritage regulations. Others propose better insulation and ventilation, but retrofitting old buildings is expensive and slow. The city of Paris has launched a programme to help residents install cooling measures, but demand far outstrips supply.
“We need to rethink how we live in historic cities,” says Dr. Pierre Lefèvre, an urban climatologist at the Sorbonne. “The roofs are beautiful, but they were designed for a different climate. We can't just preserve them as they are; we have to adapt.”
The heatwave has also driven Parisians to seek refuge in cooler spots. Parisians Flock to Canal Saint-Martin as Heatwave Sends Temperatures Soaring highlights how the city's waterways and parks become lifelines during extreme heat. But for those stuck in attic apartments, the escape is temporary.
Broader Implications for Europe
Paris is not alone. Across Europe, historic city centres face similar challenges. In Rome, Florence, and Vienna, preservation laws limit modifications to buildings, while climate change pushes temperatures higher. The European Union has set targets for building renovation to improve energy efficiency, but the pace is slow. According to the European Commission, about 75% of the EU's building stock is energy-inefficient, and only 1% undergoes renovation each year.
The situation in Paris underscores a wider tension between heritage conservation and climate adaptation. As heatwaves become more common, cities must balance the desire to preserve their character with the need to protect residents from extreme heat. For now, the city's iconic zinc roofs remain a symbol of Parisian elegance—but for those living under them, they are a source of suffering.
“I love Paris, but I'm thinking of moving,” says Dubois. “I can't live like this every summer.” Her sentiment reflects a growing concern: if cities fail to adapt, they risk losing the very people who make them vibrant.
