Do windows allow ultraviolet light to pass through?

Does a PVC window transmit ultraviolet light?

Many buyers of plastic windows are concerned about whether they allow ultraviolet rays to pass through. People take care of their things, furniture, wallpaper and so on. It has been proven that burnout occurs when exposed to direct rays. This happens because the molecular lattice of color weakens and objects change their color. Nobody wants their favorite interior items to become faded and colorless. Excessive exposure to ultraviolet radiation can also lead to cancer and eye diseases.

However, people and other living beings cannot do without ultraviolet rays. We must remember that ultraviolet light can destroy harmful microbes. If the glass does not transmit UV rays at all, then this threatens to create a bad environment in the apartment. So, do modern windows allow ultraviolet light to pass through? It all depends on the type of window. As a rule, part of the rays passes through the glass, and the other part is reflected from it. The thicker the glass, the less rays it transmits. Also, the degree of transmittance depends on the presence of a special coating on it and the shade of the glass. You can choose the one that suits you best. Each type of glass is assigned its own transmittance coefficient.

You can always find out how many rays your window can reflect. To avoid harmful radiation, you can choose from several types of protection that suits you. Triplex glass showed the best results. These are several glasses (two or more), between which there is a special film that protects from rays.

You can also choose glasses that contain a special coating. Both film and coating create the same effect. You can choose any of the options that suit you best in terms of price or appearance. If your glass is ordinary, then a fairly large amount of ultraviolet radiation enters your apartment. It's worth considering installing new windows. If this option does not suit you, then you can also use another method. You can install glass on the outside that can reflect ultraviolet light. In any case, the choice is yours.

Modern windows and doors on the Internet

Windows and doors: all topics

Useful:

WINDOWS: tips

WINDOWS: questions and answers

DOORS: questions and answers

DOORS: tips

HOME: useful

Caring for plastic windows ► Compliance with the simple rules listed in the article will ensure long-term, impeccable service of your metal-plastic windows.

Helpful information

It is known that window glass does not transmit ultraviolet radiation. Does this mean that in my apartment, due to the lack of UV rays, the destruction of microbes flying in the air does not occur?
Whether it’s old windows, new varnished wooden windows or plastic double-glazed windows, UV rays do not pass through their glass. Proof: it is impossible to sunbathe under such ordinary glass. If so, it turns out that UV rays, which destroy microbes, cannot do this in my apartment - simply because they do not pass through the glass.
It turns out that you need to open the window completely. And if it’s already getting colder in Russia. Then, the weather this week is crappy with partly cloudy weather and the sun is already autumnal - there are already few UV rays.
I also heard that in the north they specially install double-glazed windows with special glass that can at least to some extent transmit ultraviolet rays. Otherwise, they wouldn’t see flowers in the house—everyone would die without ultraviolet light.

Please answer: does glass not transmit ultraviolet rays at all? And in this regard, what ways can you suggest to more or less disinfect the atmosphere in the house?

First, you need to clarify what kind of ultraviolet we are talking about and what percentage of it the glass must block so that you can say “does not let it through.”
Visible light occupies the wavelength range from 380..400 to 760..780 nm. Anything shorter is ultraviolet.
The biological effects of ultraviolet radiation in the three spectral regions are significantly different, so biologists sometimes identify the following ranges as the most important in their work:
Near ultraviolet, UV-A rays (UVA, 315-400 nm)
UV-B rays (UVB, 280-315 nm)
Far ultraviolet, UV-C rays (UVC, 100-280 nm)

Almost all UVC and approximately 90% of UVB are absorbed by ozone, as well as water vapor, oxygen and carbon dioxide as sunlight passes through the earth's atmosphere. Radiation from the UVA range is rather weakly absorbed by the atmosphere. Therefore, the radiation reaching the Earth's surface largely contains near-ultraviolet UVA, and, to a small extent, UVB.
Conventional silicate glasses transmit well the entire visible part of the spectrum and practically do not transmit ultraviolet and infrared rays.
UV transmittance:
Quartz glass - Very good
96% Si-O2 glass - Good
Borosilicate - Medium
Lead - Bad
Lime-sodium - Bad

Conclusion. Window glass almost completely blocks far and mid-ultraviolet radiation and the short-wave part of near-ultraviolet radiation, but transmits the long-wave part of near-ultraviolet radiation quite well.

The blue lamp is a regular incandescent lamp with a blue glass bulb.
If you want to have ultraviolet light for disinfection, buy a special bactericidal lamp. Tanning lamps are not suitable for this - ultraviolet radiation is less harsh, so-called. erythematous.
You cannot be in the room when the lamp is on.

The window opening of plastic double-glazed windows is glazed with ordinary glass, which itself does not transmit ultraviolet rays.

Therefore, we can say that plastic windows cannot transmit ultraviolet radiation, though.

The term ultraviolet rays refers to three types of radiation. The most dangerous gamma radiation and B radiation are blocked by glass, and the weakest A radiation is passed through by glass.

These A-radiations are enough, for example, for plants displayed on a windowsill, but not enough for the same tanning.

You can, of course, try to order double-glazed windows with quartz glass, which allows ultraviolet light to pass through, but this will be quite expensive.