I have 20lt of this on the way but am now worried about damaging the glass. I was going to use it diluted for conny roofs etc. Is this a bad idea?
Hello Tom,
The glass will be fine, just dilute it like I did!
When I cleaned the sign above the 'solution' was on the glass a good half an hour before I cleaned the windows, the glass was fine

As for conny roofs, i've not used it on these yet but I think a few on here have with great results!
How bad can it be? It's an alkaline cleaner not battery acid :

Phil