Paris heritage laws clash with heatwave safety as attic dwellers face health risks

A historic heatwave in Paris has transformed zinc-covered attic apartments into hazardous living environments, with temperatures in the French capital exceeding 40C. The extreme conditions have drawn attention to the structural and regulatory challenges facing residents in these top-floor dwellings, where the city’s iconic architectural heritage directly conflicts with modern health and safety needs.

Approximately three-quarters of Paris rooftops are clad in zinc, a material recognised by UNESCO as valued cultural heritage for its weather resistance and malleability. However, as a metal, zinc absorbs and conducts heat, creating indoor environments that retain searing temperatures and lack adequate ventilation. This physical reality poses a significant threat to health, particularly for low-income tenants and students who are often priced out of lower-floor housing.

The health implications of this housing arrangement are well-documented. Data from France’s public health agency indicates that during the 2003 heatwave, which resulted in 15,000 heat-related deaths, living in a Paris attic room directly under the roof increased the risk of death by more than fourfold. Furthermore, a 2023 study published in The Lancet Planetary Health journal identified Paris as having the highest risk of heat-related deaths among 30 European capitals studied.

Maider Olivier of The Foundation for Housing for the Disadvantaged highlighted the regulatory barriers preventing mitigation. She stated that zoning laws designed to preserve the city’s architectural character hinder residents from installing necessary insulation or shutters. “There are people who are unable to insulate their roofs or install shutters to block the sun and prevent their homes from overheating because of regulations to protect the rooftops,” Olivier said, noting that these protections fail to safeguard the people living beneath them.

Residents such as Amelie Kenney, a 23-year-old Australian graduate, and her partner Francesca Pilia, an Italian national, are experiencing the physical toll firsthand. The couple pays 735 euros ($835) per month for a sixth-floor walk-up with a west-facing window that receives direct sun from midday to dusk. With daytime highs nudging past 40C and nighttime lows remaining around 25C, they rely on electric fans, cold showers, and wet rags to cope, illustrating the daily struggle for comfort in these cramped, poorly ventilated spaces.