[[GQC] Tim]

Second time now I've cleaned this massive place. Front of the house are all painted sash windows. I've looked at all the frames and the paint is of very good quality. It's usually being painted once a year I was told.

Whatever I did I couldn't get these windows properly clean. Milky runs and small spots on some, but not all the windows. I clean the inside as well, so had a good look by opening both sash windows, quickly sprayed some detergent on it, and buffed them up with a microfibre. I thought, well must have had a lot of dirt in between the top sash, first clean and all that, maybe didn't pay enough attention (have decorated strip of wood in front of top of glass, brush only fits under when fully splayed).

Anyway, today the second clean, and the same happened, even worse. After closer inspection I saw exactly what the problem was. Whoever did the decorating painted straight over the old cracked and oxidised paint. Here and there you can see the old paint, and this is exactly where the problems came from.

I think I will have a word with the property manager and point out the problem. They should have really scraped all the old paint off. Interestingly the downstairs windows aren't that bad. They must have done a more thorough job there.

So I guess with the top windows I just have to keep opening both sashes from the inside and quickly spray and buff the offending panes. If they would have been strongly hydrophobic it would have been fine, but they sheet nicely so they keep milking the top of the frame.

[AJ]

You will help yourself by cleaning the the joining cross bars from inside. Top of the bottom sash and bottom of the top sash. Also, I wouldn't spray detergent on them as this can also cause spots and 'milky' runs. If you just wipe the runs with your micro/scrim, they will come good sooner.

[Jeff Brimble]

Wfp pole them when the panes are drying say 10 min wfp the panes again but dont touch the white paint on the tops of the glass.

[[GQC] Tim]

You will help yourself by cleaning the the joining cross bars from inside. Top of the bottom sash and bottom of the top sash. Also, I wouldn't spray detergent on them as this can also cause spots and 'milky' runs. If you just wipe the runs with your micro/scrim, they will come good sooner.

Not sure I follow, I just sprayed some window cleaning spray on them and buffed them up, just like georgian panes, came up well, like usual. Also there is not much point in cleaning them, because the actual paint on the crossbars is of good quality, it's what's underneath it. Here and there the new paint doesn't cover the old paint fully, and that's where it's coming from.

Wfp pole them when the panes are drying say 10 min wfp the panes again but dont touch the white paint on the tops of the glass.

I guess that would work, but would really need to stay away from it, but to actually clean the spots and milky stuff runs, you need to go all the way up to the top or dividers. They are basically very big georgian sash windows, eash sash has got a "cross" in it. They are about 5 or 6 foot high. So you got multiple points where it can run from. You could the top row on every window, then go back and do the following row.

[AJ]

The dirt can come from between the top and bottom panes, in the gap where they join. If you clean the wooden cross pieces from inside when you are doing the inside it will prevent splashes that go up between them from flushing out the dirt on to the glass.
Putting detergent on the glass can cause a poor finish when you next wfp them.