I lost 2 a couple of days ago due to wfp, i have had these customers for 10 years.
It took them nearly 3 years to decide they didnt like it.
Certainly was a bolt out of the blue
The thing is dave, it's so easy to become over confident in our own ability to leave every job perfect.
We leave the windows wet and think good job done.
I had a shock today cleaning on a marina, it was sunny with a drying wind and the glass sheets as we like it.
I can do the third floor tops on four houses, and then go back to do the first floor windows.
When I went back and looked up at the windows I had done first, they had dried and I could see Smokey runs on two of them. These runs were about 6 ins wide below the vents ,so I know what caused them, but if I hadn't checked I wouldn't have seen them.
Recent rain had washed most of the salt off, but those vents must be full of it.
Non coastal cleaners will have no experience of salt, but it's a bugger, you can keep chucking water at it, but it takes ages to dilute the stuff to a point where it won't show on the glass.
I know you do lots of this kind of work, sometimes it pays to go back and check. Dai