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Uv window film life

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9 replies to this topic

#1 Qowpel

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Posted 07 March 2017 - 08:34 AM


Hello there guys, I have tow layers of Llumar window films on my car (two because they put the wrong one on, which blocks 99% uv rays, but then put the one that blocks 99.9% over it but who cares about 0.9%...

 

Anyway Llumar customer service is quite poor, and I have been trying to find out if the films I have on my car are still effective (installed 2.5 years ago). Llumar keeps sending me automated messages that do not answer my questions. Anyway, do these films truly last 5 years, meaning that they retain their full effectiveness for 5 years? Or by 5 years, are they simply something like 70% effective, which, from a marketing standpoint, fits under the umbrella advertising term, "effective?". . I ask this because at 2.5 years I have lost say 5% or more of my effectiveness on these things, then I have no problem installing a new layer as I have the money to do so. Anyway, anyone have a generally roundabout answer to this?



#2 orion602

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Posted 07 March 2017 - 05:37 PM

I think the best would be to measure uv radiation by solarmeter or uv meter outside and compare it with measures taken inside the car.



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#3 Qowpel

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Posted 07 March 2017 - 06:31 PM

I think the best would be to measure uv radiation by solarmeter or uv meter outside and compare it with measures taken inside the car.


Thanks friend I figured the same.

Also, just checked Llumars page..... Looks like any of us with tinting may have been partially fooled... because if you read this, it notes you can block 99%+ of UV rays...ok...but then on the bottom ot lists the UV wavelength as 300nm to 380nm...so they must mean 99 percent protection from specifically 300 to 380 nm, and no protection from 380 to 400nm... that is some bs.. Any films that actually do block up to 400 nm at all?

http://northamerica....ngerous-uv-rays

#4 Qowpel

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Posted 07 March 2017 - 08:21 PM

"UV-filtering window films are flexible films that adhere
to glass and block ultraviolet and visible light to varying
degrees. In the past decade there has been a great increase
in the number of manufacturers producing these films and
in the variety of films that are available. Films that filter
mainly ultraviolet light are clear (usually with a slight
yellowish cast when viewed on edge), while to filter vis-
ible light the film must be tinted or coated. The majority
of films available now nearly eliminate ultraviolet radiation
making the choice between suppliers more dependent on
the options available and reputation of the supplier. Elimi-
nation of ultraviolet light is typically stated as 95-99% or
better in the range of 200 to 380 nm. (The 380 to 400 nm
range is often not included in the manufacturer’s range
and, therefore, not accounted for in their data.)"

Here is a qupte that I found. So it appears that most manufacturers are mainly concerned with 300 to 380 nm and not up to 400nm. The question here is, where do we find films that block up to the 400nm range? Or do you guys think they do likely block somewhat up to the 400nm range, but that they simply were uncaring to find out or measure to what degree they do, in their data? That seems to be the case. What do you all think?

#5 niner

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Posted 09 March 2017 - 05:20 PM

Look into the nano-ceramic films like Huper Optik or Ceraluxe.  These films have very impressive UV blockage (both UVA and B), and also take out a lot of IR, so your car stays way cooler.  I'm definitely getting something like this for my next car.



#6 orion602

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Posted 09 March 2017 - 07:56 PM

talking about windows filters, are there any uv-filters in large passeger planes' windows? 

I guess there are, as i didn't hear anybody complaining about getting sunburned by high altitude sun during longhaul flight. But how powerful are those filters? I ask because i enjoy looking out of the plane, so i take window seat whenever its possible. Or should i better use sunscreen?.



#7 Ali

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Posted 14 July 2017 - 08:02 AM

Just for anyone who's interested, I actually purchased a UV meter which measures uvb-uva between 280-400nm. I tested a whole bunch of window films branded films like vcool and cheap non branded films. They all blocked 99%+ UV rays up to 400nm.

#8 bosharpe

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Posted 15 July 2017 - 01:44 PM

Just for anyone who's interested, I actually purchased a UV meter which measures uvb-uva between 280-400nm. I tested a whole bunch of window films branded films like vcool and cheap non branded films. They all blocked 99%+ UV rays up to 400nm.

 

How much was the cost and from which company?



#9 Ali

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Posted 15 July 2017 - 10:31 PM

I tested vcool, 3M, Hyper Optic, and a few other branded films I also tested cheap films you can find on eBay..they all preformed equally well at blocking UV.....but obviously heat reduction varied. If your primary concern is UV u can literally go for any window tint.

#10 Ali

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Posted 15 July 2017 - 10:33 PM

On a side note I tested window films I had on windows for 5+ years and their efficiency dropped to around 40-50%. Probably worth changing the films every 2 years.




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