Electromagnetic Shielding Window Film: Protection for Electrosensitive Individuals

With the development of ultra-high-speed wireless connections, it has become essential to protect oneself effectively against the effects of electromagnetic waves. A little-known solution consists of covering windows with a shielding film that acts as a true electromagnetic barrier.

But do you really know what this type of film is? In this article, we reveal everything you need to know about electromagnetic shielding window films: do they offer effective protection for electrosensitive individuals? In which cases are these films useful? And how to identify the concrete advantages and limitations of this solution.

What Is an Electromagnetic Shielding Window Film?

The purpose of an electromagnetic shielding window film is to effectively protect against UV rays (ultraviolet) and high-frequency electromagnetic waves (mobile phones, Wi-Fi). These films operate by being coated with a thin layer composed of conductive nanoparticles or metallic materials. The effectiveness of an electromagnetic shielding film varies depending on the model: some ensure up to 97% blocking of electromagnetic waves.

The effectiveness of a shielding film is measured in dB (decibels) or attenuation percentage (%). Our store offers several specific products, such as this high-frequency electromagnetic shielding window film, which protects against high frequencies by attenuating up to 36 dB thanks to a pure copper alloy.

When to Use an Electromagnetic Shielding Window Film?

An electromagnetic shielding window film is necessary to protect against electromagnetic radiation when a glazed surface is heavily exposed to this type of emission. Unlike stone (or concrete), which naturally blocks part of the electromagnetic radiation, the glazed surface of a traditional window (i.e., without integrated shielding films) lets most waves pass through. This protection becomes essential in the following cases:

• For Electrosensitive Individuals:

Did you know that in France, nearly one in 50 people is sensitive to electromagnetic waves? This is revealed by a report from ANSES (the French National Health Security Agency). For these individuals, prolonged exposure can trigger a range of painful symptoms: persistent migraines, unexplained exhaustion, memory lapses, sleep disturbances, or even skin-burning sensations.

And that's not all: these waves can also interfere with certain vital medical devices, such as pacemakers or insulin pumps. A real challenge for those who rely on them daily.

• Protection Against Industrial Espionage:

Electromagnetic shielding films reduce the risk of cyber piracy by blocking incoming and outgoing mobile and Wi-Fi waves.

• Protection in Highly Irradiated Areas:

Some areas are more exposed to electromagnetic waves, making it essential to cover glazed surfaces with shielding films. These include zones located near relay antennas (4G/5G).

• Protection in Specific Contexts:

Installing electromagnetic shielding films is sometimes necessary in sensitive environments, such as medical centers, military facilities, or research and development centers.

Concrete Advantages and Limitations of This Solution

Shielding films provide effective protection against electromagnetic waves, helping to reduce the intensity of waves circulating inside homes or sensitive areas (hospitals, nursing homes, military zones). They contribute to improving the health of hypersensitive individuals, especially in densely populated urban areas. Shielding films also allow good transmission of natural light and can be applied to very large glazed surfaces simply by joining pieces together.

Despite all these advantages, several technical limitations should be noted:

Ineffective Against Low-Frequency Magnetic Fields

A shielding film ensures good attenuation of high-frequency waves (around 1 GHz), corresponding to wireless devices and mobile phones. However, it is completely ineffective against low-frequency magnetic fields.

Incompatible with Metallized Windows

Shielding films are generally not compatible with metallized windows, as these windows absorb heat (solar control glass), which can lead over time to an increased risk of cracking and gas leakage, especially for Argon gas-filled windows.

Blocking of Natural Light

The use of a shielding film blocks about 30% of natural light, or even more depending on the thickness of the film, although some models allow natural light to pass through thanks to a clear transparent finish.

A Special Coating Is Necessary to Extend the Film's Lifespan

Shielding films with multiple metallic layers must be protected against corrosion effects at the edges with a special sealing varnish. Installation by a professional is also highly recommended, particularly for large surface areas.