So the majority of the windows I did were plexiglass/lexan. I guess you’d call them hydrophilic? Apart some newer ones, it was hard to see a real shine on them due to the UV damage.
There were a number of more modern glass windows which came out 99% spot free, apart from the occasional grease run from the rubber seals. A lot of the newer windows were hydrophobic. Using my 5° nozzle seemed to work well for rinsing them, and I usually did 2 or 3 rinse passes after the second soap step.
Feedback from staff and the maintenance crew was overwhelmingly positive. I think I way surpassed any of their expectations. As a longtime window cleaner who has always been my own worst critic, I would say I was 90% satisfied with the results, which far surpassed my own expectations for the project.
Depending on the security levels of the people in the individual rooms/cells, they might have had a triple thick lexan variation (for the life of me I can’t remember the name of it). You can spray those with a fire extinguisher then beat them with the fire extinguisher and you can’t break them. At most you bow them. When reading your post I was amazed they had glass at all, and that they were able to open the windows. Think psychiatric issues and easily accessible glass = suicide or attacks on staff. I would imagine the glass is likely in non secure areas,staff only areas.
Nice work, thanks for posting, learned a lot off this thread.
Very interesting, thanks for replying. My mind was wondering about their physical security, then I was wondering how to clean some of the “security glass” behind metal bars, and if SH would have an effect on it’s integrity. Most newer security windows are tied in with rebar to the structure, the bars are cut resistant, and the “glass” is almost unbreakable. I now remember some places having a portion of the window “vent”, since you mentioned that.
