TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker and becoming a Supporting Member. For more info: Support TMC

Read this before installing window tint

Discussion in 'Model 3' started by Lanzer, May 14, 2019.

Tags:
?

Which brand of window tint did you install?

  1. 3M

    38 vote(s)
    18.9%
  2. Suntek

    28 vote(s)
    13.9%
  3. Llumar

    48 vote(s)
    23.9%
  4. Madico

    3 vote(s)
    1.5%
  5. Solarguard

    4 vote(s)
    2.0%
  6. Xpel

    48 vote(s)
    23.9%
  7. Other (professinoal install)

    29 vote(s)
    14.4%
  8. Other (DIY)

    3 vote(s)
    1.5%
  9. Motoshield

    0 vote(s)
    0.0%
  1. Lanzer

    Lanzer Member

    Joined:
    May 2, 2018
    Messages:
    181
    Location:
    San Jose
    #1 Lanzer, May 14, 2019
    Last edited: May 14, 2019
    Hello fellow Tesla owners,

    Having just installed some window tint on my car, I'm curious if I'm now free from UV radiation while driving, so I decided to run a few tests to fulfill my curiosity.

    [​IMG] [​IMG]

    I did some testing and the results were surprising and disappointing. According to my UV meter, the window tint was blocking 70% of the UV light, while a pair of $12 UV blocking reading glasses was able to block 99%. That's not what I want to see!

    I was very curious, since there could be a hundred variables that could taint my result, I ended up running the following tests:
    • I used different UV metering equipment - (Solarmeter model 4.2 UVA meter, Sper Scientific UVA/B meter, homemade Arduino UV meter with an VEML6075 sensor)
    • For light source I tested with my UV flashlight, as well as direct sunlight
    • I tested performance of the tint alone, as well as the same tint installed on my car's window, in-case the glass itself blocks off some UVB radiation.
    • Besides my UV reading glasses, I also tested my car's front windshield, as well as a pair of transition prescription glasses, and they all blocked 99% of UV radiation.
    • I ordered additional window tint, from cheap tint sold on Amazon, to film from Filmvantage, SnapTint, and Suntek (with 3M on its way)
    With all those variations, I was able to verify my results. My window tint did not block 99% of UV radiation. Nor did any of the other tint samples I obtained so far.

    Lastly, I played with a very simple test - shine my UV flashlight onto my fiancé's pair of transition lens to see if the lens darken.

    [​IMG] [​IMG]

    I left the UV light on for 30 seconds, and the performance between the window tint and the UV glasses is pretty apparent. Note that this is not definitive, as there is a chance that the transition lens reacts to wavelength above 400nm, but it help align with my UV meter's findings.

    So now I'm very confused. Is there a specific way that "UV blocking" is measured by a standard committee which I'm unaware of?

    I noticed that the most common equipment used in demo videos on YouTube are from EDTM, with their meters that display a percentage value. I'm curious as to how that value is calculated.

    Their solar spectrum meter SS2450 detects UV at 350-380nm, while the UV Sentry UV1265 has a sensor that peaks at 380nm. Both seems to be very focused on UVA1 and doesn't seem to cover UVA2 and UVB. I wonder if that makes a difference with what I'm using. The closest I have is the VEML6075 which peaks at 365nm.

    I have more window tint sample on order, and will be doing more testing in the coming weeks, and I will be sharing my results on my blog here. (WordPress.com) As well as this forum as often as I can.

    So far, these are the results from my testing:

    tint-test.png

    Upon further research, I found a 2008 report from WAAC(Western Association for Art Conservation) who tested a bunch of window tint and compared their UV rejection rate to the manufacturer's rate. They also found that some brands do not match their advertised rate. Most notable is 3M's Scotchtint Sun Control 66 only blocks 38% UV from their advertised 98%. I assume that today's 3M product works better, but we'll have to test to find out. Of their brands tested, Madico, Llumar, and Vista Window Film all tested at 99%, so I'll definitely try to get some films from these companies to test out. Unfortunately none of these brands are available online.

    So to all fellow Tesla owners, beware that not all tint are made the same. I will keep testing more films when I get my hands on them. Professionally installed tint are not cheap and I hope that you're getting your money's worth.

    If there are any members in the Bay Area, CA who has Suntek, 3M, Llumar, or other quality tint installed, I'd like to ask if I can drop by and test your window tint. :)
     
    • Informative x 13
    • Like x 3
    • Funny x 1
  2. P85_DA

    P85_DA Supporting Member

    Joined:
    Apr 25, 2015
    Messages:
    3,810
    Location:
    CA
    Why no photosync? That seems to be a popular tint for Tesla owners ..and most folks charge premium for installs on that brand
     
    • Like x 3
    • Informative x 1
  3. DFW Valiant

    DFW Valiant Member

    Joined:
    Dec 20, 2018
    Messages:
    10
    Location:
    Dallas
    It's not common knowledge that not all window tint is the same?

    Thanks for trying to get data.
     
    • Like x 1
  4. Lanzer

    Lanzer Member

    Joined:
    May 2, 2018
    Messages:
    181
    Location:
    San Jose
    • Informative x 1
    • Like x 1
  5. SigNC

    SigNC Active Member

    Joined:
    Aug 23, 2017
    Messages:
    1,076
    Location:
    NC
    yeah i think you'd see a lot different results if you put the film on glass and then tested.
     
  6. Twbruin

    Twbruin New Member

    Joined:
    Aug 30, 2018
    Messages:
    3
    Location:
    Orange county
    May I ask where you received your tint samples? From what I read, unless you got your tint straight from the company rep, the stuff on eBay and Amazon are all cheap Chinese knockoffs.
     
    • Like x 1
  7. lotusland

    lotusland Member

    Joined:
    Jun 30, 2011
    Messages:
    233
    "I tested performance of the tint alone, as well as the same tint installed on my car's window, in-case the glass itself blocks off some UVB radiation."
     
  8. lotusland

    lotusland Member

    Joined:
    Jun 30, 2011
    Messages:
    233
    My simplified measurement here seemed to show the windshield does not block 99% of UV. It blocks a lot but not 99%. The upper glass roof panels do though. The side windows are not even close.
     
    • Informative x 1
  9. SigNC

    SigNC Active Member

    Joined:
    Aug 23, 2017
    Messages:
    1,076
    Location:
    NC
    ah, i can't read apparently :)
     
  10. CUBldr97

    CUBldr97 Member

    Joined:
    Apr 20, 2015
    Messages:
    396
    Location:
    MD
    there is built in UVA in the glass already, specifically the Windshield blocks 100% UVA, but the side windows do not necessarily. Hence why your auto tinting eyeglasses don't tint. Great information!

    Keith
     
  11. SigNC

    SigNC Active Member

    Joined:
    Aug 23, 2017
    Messages:
    1,076
    Location:
    NC
    Somewhere I posted what tesla told me each glass panel blocks. I think they only really claim 99% on the roof panel.
     
  12. bshap73

    bshap73 Member

    Joined:
    Apr 22, 2019
    Messages:
    62
    Location:
    California
    Planning to get Llumar soon, in Bay Area, can test when I get it, gotta call to make appointment.
     
  13. RSL2020

    RSL2020 Member

    Joined:
    Aug 29, 2018
    Messages:
    155
    Location:
    East Coast
    I would love to know if there is any difference between the factory sunroof and the factory back-glass protection.

    I have always wondered if the back-glass maintained the same performance after Tesla changed from the red tinted type.
     
  14. Lanzer

    Lanzer Member

    Joined:
    May 2, 2018
    Messages:
    181
    Location:
    San Jose
    From what I've learned, car companies are required to treat the front windshield to block UVA, but the regulation does not apply to side windows. So we don't have to worry about tinting the front, thank god.

    But there are a number of videos showing dermatologists saying how many americans are having skin problems on the left side of their body due to exposure from driving, which prompted me to start tinting my windows.
     
  15. guate6

    guate6 New Member

    Joined:
    Apr 26, 2019
    Messages:
    2
    Location:
    Florida
  16. MXWing

    MXWing Well-Known Member

    Joined:
    Oct 13, 2016
    Messages:
    6,982
    Location:
    USA
    For 38K you can have either:

    1.) SR with AP.
    2.) SR with Photosync tint

    :D
     
    • Funny x 4
  17. brur

    brur Member

    Joined:
    Nov 17, 2018
    Messages:
    250
    Location:
    Prescott AZ
    It has been my understanding windshields block all UV. How about the roof of a tesla 3?

    Side windows do come with some UV protection, just nowhere near 100%.
     
  18. JFChenger

    JFChenger Member

    Joined:
    Apr 14, 2019
    Messages:
    107
    Location:
    Windy City
    My window tints were XPEL Ultimate Plus and my installer specifically showed me 99% reading before handing the car over back to me. He did the test on my front windshield (clear film, blocks radiant heats, as the glass itself already blocks UV as others have side) and all side windows, I didn't tint my rooftop. He used a similar if not identical device as the OP's. FWIW.
     
    • Like x 1
  19. T3SL4AFBruh

    T3SL4AFBruh Member

    Joined:
    Apr 10, 2019
    Messages:
    83
    Location:
    Bay Area
    Let's keep it realistic, as bias as it'll sound, 93.78% of car owners get tint for aesthetics... But I also applaud your attempt at data gathering.
     
  20. brur

    brur Member

    Joined:
    Nov 17, 2018
    Messages:
    250
    Location:
    Prescott AZ
    that makes me part of the richest 6%
    You northern cali guys live in a weather bubble.
     
    • Funny x 2
    • Love x 1

Share This Page

  • About Us

    Formed in 2006, Tesla Motors Club (TMC) was the first independent online Tesla community. Today it remains the largest and most dynamic community of Tesla enthusiasts. Learn more.
  • Do you value your experience at TMC? Consider becoming a Supporting Member of Tesla Motors Club. As a thank you for your contribution, you'll get nearly no ads in the Community and Groups sections. Additional perks are available depending on the level of contribution. Please visit the Account Upgrades page for more details.


    SUPPORT TMC