Hi I have installed Garware Ice-cool Elite to my Punto MJD I saw many car owners install sun control film on front windshield also. Following 3 doubts are there in my mind. 1) Stock Front windshield has already only 75% visibility. Means 25 % coating is there for factory windshield. then how it is safe for night & rain ? 2) is it legal to install sun film to front windshield ? 3) If stock windshield has 75% visibility then this visibility might be decreased due to installation of film for front windshield.then how Manufacturers claims that no effects on visibility.