14/01/26

PVC Windows and Health Safety: Facts and Myths

PVC windows (made of polyvinyl chloride) are widely used in residential and public buildings. Let’s examine the key aspects of their safety.

What’s in the Composition
The main material is polyvinyl chloride (PVC), derived from salt and petroleum products. The profile includes stabilizers, plasticizers, and colorants. Modern manufacturers use potassium and zinc instead of lead (previously used) — these components are considered safe.

When Risks May Occur
During combustion. At temperatures above 390 °C, PVC releases toxic gases. Important note: the material is self‑extinguishing — it burns only under direct flame exposure.

With low‑quality profiles. Cheap windows may contain harmful impurities or emit volatile substances when heated.

Due to tight sealing. The tight fit of sashes can reduce air exchange — without proper ventilation, CO₂ concentration and humidity rise, which may lead to mold growth.

How to Minimize Risks
Choose certified windows. Request declarations of conformity and certificates from suppliers (

Ensure proper ventilation. Use:

micro‑ventilation mode;

supply air valves;

regular burst ventilation (10–15 minutes, 2–3 times a day).

Check the labeling. Opt for profiles from reputable brands (VEKA, Rehau, etc.), where composition and substance emissions are controlled.

Avoid overheating. Do not install windows near strong heat sources (stoves, high‑power radiators).

What Experience Shows
PVC windows are approved for use worldwide.

The service life of a quality profile exceeds 50 years; under normal conditions, the emission of harmful substances is minimal and does not exceed permissible limits.

Recycling PVC profiles reduces environmental impact.

Conclusion: when production and usage norms are followed, PVC windows are safe for health. Key factors include material quality, proper installation, and adequate air exchange.