My friend has used this method on 3 of his cars and let me borrow his steamer with some pointers. Turned out being Very Easy, I had the rear window done in less than 15 minutes. There was some minor glue residue in some spots like the corners but running the steamer nozzle over the bare glass loosened it right up then a towel wipe of the liquid steam all gone... I thought it was gonna be a 2 hour process.