[elym]

Hi All,

Unfortunately, the window tint industry does not have a regulatory body to explain the truths and myths about tints. I'm hoping that i can shed some light in this from the feedbacks of satisfied customers from the USA. Fortunately, they provide us with a benchmark as all films imported to the USA are required to be tested on a standard form as required by The National Fenestration Rating Council (NFRC), AIMCAL and the IWFA. Below are excerpts from experts: -

Summarized: -

TSER is an industry recognized performance value, infrared rejection is not. TSER is the percentage of all energy from the sun reflected away from a window, as well as the percentage absorbed by the window and released back outdoors.

There are many problems with so-called "infrared rejection", such as the fact companies selectively choose which parts of the spectrum they report and IRR does not include absorption- an important contributor to heat gain. For instance, a certain large company reports this for only a small part of the spectrum which is less than 10% of the actual infrared wavelengths. Some other companies report this at only one wavelength! So they call it "infrared rejection", but really it is only a small part of the total infrared and is not representative of the actual infrared energy. Also, manufacturers of some products that have very high absorption report IRR because it does not count absorption against it. The TSER is the "true" heat rejecting value fo a film, because it takes the entire solar spectrum into account (infrared is only 49% of the solar energy anyway), and also includes the effects of absorption. The National Fenestration Rating Council is the the only third party window rating system. It is recognized by Energy Star, utility companies, and U.S. and Canadian governments. They only recognize SHGC/TSER. They do not recognize IRR.

In short, IRR is a misleading marketing gimmick.

The International Window Film Association also has a memo pointing this fact out, so check their web page out also. Additionally, CPFilms and Solar Gard have each written good white papers explaining why these claims are bogus (found on their technical pages).

Full Article
See Attachment

A quick check in Vkool and LLumar websites show that heat rejection ranges for their high VLT films(50-70%) are within 30-60% TSER. Pls be careful of bogus claims as these films cost in region of 1.5k to 6k sold in Malaysia. Hope this helps you understand heat rejection on your next purchase!

Attached Files

•  0250SG24IR_IR_Rejection_TB_Rev0709.lo.pdf   234.58KB   1979 downloads

[drexchan]

So, there's this International Window Film Association to explain the truths and myths about tints.

Nobody you said?

Anyway, good sharing.

[elym]

Well unfortunately such associations only exist in the US. Therefore tint resellers here in Malaysia quote their own numbers in their brochures with regards to IR Rejection.
The US doesn't recognize this as infrared (IR) is a light wave and at best accounts for about 49% of what causes heat. These numbers are listed by the manufacturers, where are they testing it? IR ranges from 750nm to 2500nm. Many manufacturers only test between 900 to 1000nm giving a false performance in my opinion.
The US recognizes TSER which is compiled by Infrared (49%) + UV (2%) + Visible Light (49%). It provides a more accurate measure of heat rejection.

an example -
Xtint claims an IR rejection of 80%. Which range of rejection is he referring too? if its 900 to 1000nm u can be sure the film only gives out a TSER of 20-30% which is too low for tints exceeding 1k.
If the range is 750 to 2500nm it will only translate to ( 80% x 49% (IR in solar spectrum)) = 39.2% TSER which is acceptable for films around the 1k region.

Note that V Kool elite (VK70 in their website) provides around 50+% TSER figure with a 73% VLT. I would advise u benchmark prices of films to this to avoid being a victim of marketing efforts.

Of course this is only the tip of the iceberg. Other things to consider is whether films will live through the warranty period as film removal for the rear windscreen has a 50-50 chance of ripping out your rear demister lines. Companies will only warranty film replacement. NOT your Windscreen!

No pun intended to all companies out there. Just thought as a consumer we should look out for one another.

[drexchan]

ok ok.. no tint to my new car. probabaly i will use spray can. kaw tim.

[vr2turbo]

ok ok.. no tint to my new car. probabaly i will use spray can. kaw tim.

Got semi transparent one ah?

[ntc2000]

Got semi transparent one ah?

lol... spray got transparent 1 meh???

[vr2turbo]

lol... spray got transparent 1 meh???

Got see my ?? or not.....

[rallychamp]

clear coat spray was a transparent one...


-any candy colour/metallic colour if sprayed thin layer shud b transparent type...hehehe....go try one....

[vr2turbo]

clear coat spray was a transparent one...


-any candy colour/metallic colour if sprayed thin layer shud b transparent type...hehehe....go try one....

Just remember Kristal Bond is spread on tint......

[drgnkid]

Hi All,

Unfortunately, the window tint industry does not have a regulatory body to explain the truths and myths about tints. I'm hoping that i can shed some light in this from the feedbacks of satisfied customers from the USA. Fortunately, they provide us with a benchmark as all films imported to the USA are required to be tested on a standard form as required by The National Fenestration Rating Council (NFRC), AIMCAL and the IWFA. Below are excerpts from experts: -

Summarized: -

TSER is an industry recognized performance value, infrared rejection is not. TSER is the percentage of all energy from the sun reflected away from a window, as well as the percentage absorbed by the window and released back outdoors.

There are many problems with so-called "infrared rejection", such as the fact companies selectively choose which parts of the spectrum they report and IRR does not include absorption- an important contributor to heat gain. For instance, a certain large company reports this for only a small part of the spectrum which is less than 10% of the actual infrared wavelengths. Some other companies report this at only one wavelength! So they call it "infrared rejection", but really it is only a small part of the total infrared and is not representative of the actual infrared energy. Also, manufacturers of some products that have very high absorption report IRR because it does not count absorption against it. The TSER is the "true" heat rejecting value fo a film, because it takes the entire solar spectrum into account (infrared is only 49% of the solar energy anyway), and also includes the effects of absorption. The National Fenestration Rating Council is the the only third party window rating system. It is recognized by Energy Star, utility companies, and U.S. and Canadian governments. They only recognize SHGC/TSER. They do not recognize IRR.

In short, IRR is a misleading marketing gimmick.

The International Window Film Association also has a memo pointing this fact out, so check their web page out also. Additionally, CPFilms and Solar Gard have each written good white papers explaining why these claims are bogus (found on their technical pages).

Full Article
See Attachment

A quick check in Vkool and LLumar websites show that heat rejection ranges for their high VLT films(50-70%) are within 30-60% TSER. Pls be careful of bogus claims as these films cost in region of 1.5k to 6k sold in Malaysia. Hope this helps you understand heat rejection on your next purchase!

Hi elym, so does that mean the higher the TSER, the better heat rejection?