too much heat

I have a job to look at in a couple days. I did the job a few years ago with Sungard Silver 35. It is an old car dealer building and there are 6 windows that are 94" wide and 118" tall. They have called me today looking to get an estimate on doing those windows and say that they are getting too much heat. Checking the numbers on TSER the 35% is 65.2 and the best option I have would be the Johnson Senic View 10 at a 82% TSER.

My question to you all is, will that 17% change make enough difference? I am thinking that it will NOT make enough difference. Also, will the film have degraded over 4 years or so to where it has lessened in performance?

thanks

I did a salad makers with the sun from the south and west side in the afternoon... It makes a big difference.. I used SS35.. And you could sit right in front of the window once it was done.. The owner said the same day they noticed the diffrence... loved it..

But if they are looking for darkness go for the ss2o.. The 35 look pretty close to what you see now just without Glare..

SS35 will make a huge difference! They are complaining about the heat that is coming in through the SS35 film! There are so many square feet of glass that window film just doesn't cut enough off.

SV-10 will be much much better. If they complain after that, then they is crazy!

i would use the film with the most heat blockage i use silver 15 from sungard all 78% of the heat never had it fade on anything i done in the last 10 years. but dont know about johnson film fadeing after a few years i do know if it startes fading it will lose the ability to block as much heat a the spec show from day 1