Hi all I have this house to do on Monday morning (see image attached). It has some small mortar splatters left on the glass which the owner would like removed along with some sealant marks. How do you know if its safe to scrape? I'm pretty sure the glass is smoke/tinted, rather than a tinted vinyl being applied to the inner. Would you touch this? Do you do jobs like removing stubborn objects from tinted glass? Also how do you tell the difference between Low-e and tinted glass? Many thanks in advance. Also, would you ettore flip the first level curved windows, or would you walk the ledge and clean them by squeegee directly? Thanks.