Are UV Films for Windows Really Effective in Blocking UV Rays?

  • Context: High School 
  • Thread starter Thread starter Solid Snake
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SUMMARY

UV films for windows are marketed as blocking 99% of UV rays, including UVA and UVB, which is crucial for protecting skin and furniture from sun damage. However, skepticism exists regarding their effectiveness, as some users question the actual performance of these films. Research from the Winterthur Museum indicates that standard window glass can block UV-B wavelengths, but the effectiveness of additional films may vary. Users are encouraged to consult scientific resources to verify claims about UV protection.

PREREQUISITES
  • Understanding of UV radiation types: UVA and UVB
  • Familiarity with window film specifications and performance metrics
  • Knowledge of glass properties, specifically float-grown soda lime glass
  • Ability to interpret scientific studies and data on UV transmission
NEXT STEPS
  • Research the effectiveness of different window films, focusing on brands and their UV blocking capabilities
  • Examine scientific literature on UV transmission through various types of glass
  • Learn about the long-term effects of UV exposure on skin and materials
  • Explore consumer reviews and case studies on window film performance in residential settings
USEFUL FOR

This discussion is beneficial for homeowners, interior designers, and anyone interested in UV protection solutions for residential spaces, particularly those concerned about skin health and furniture preservation.

Solid Snake
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Hey everyone. Just a basic question out of curiosity. How effective are UV films for windows for blocking UV rays? Every window film I see says it blocks 99% of UV rays. I just put them in my house, and honestly, I find it hard to believe that it is blocking 99% of UV rays (that being rays from 400nm downward). I swore a long time ago I saw a news report that says that they don't really work well. I looked for it online and can't find anything. I personally want protection from UVA and UVB rays for my skin and furniture while in my house, so this is of some importance to me.

So do these films really block 99% of UV rays?
 
Science news on Phys.org
Window glass (typically float-grown soda lime glass) on it's own would prevent transmission of UV-B wavelengths and lower. See the transmission spectrum in slide 20 http://www.iop.org/events/scientific/conferences/y/09/energy/file_44016.pdf.
 

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