When did Zembla Season 35 Episode 4 air?
Zembla Season 35 Episode 4 aired on January 26, 2026.
Zembla
Zembla is a Dutch television documentary programme by VARA and NPS. The documentaries are based on in-depth research which can take months. The subjects are often controversial. A documentary in 2001 about fraud in the Dutch construction sector led to parliamentary inquiries. In May 2006 the programme exposed the fact that politician Ayaan Hirsi Ali had lied in her claim for asylum, which led to her resignation from parliament.
Season 35 · Episode 4
Gas in de gevel
Jan 26, 2026·45m
Tens of thousands of homes each year are insulated with UF foam sprayed into cavity walls. The material is considered sustainable and is subsidized for its energy savings and climate benefits. At the same time, residents across the country are reporting serious health problems after installation, including headaches, shortness of breath, and eczema. In some cases, the symptoms are so severe that residents are forced to leave their homes. Experts are raising concerns about the carcinogenic formaldehyde in the foam. Zembla is documenting the complaints and investigating the health risks of this insulation method.
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How long is Zembla Season 35 Episode 4?
This episode runs for approximately 45 minutes.
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