[Klean07]

Started doing a new pub yesterday but some of the windows dried with white spotty lines at top! Could this be something to do with powdery paint or something else. My tds is 00.

[jarvy]

Old paint will be the problem. Might not be a job for wfp.

[Michael Peterson]

search oxidised frames on here my friend and check out adders window cleaning videos on you tube, you want the one called problem glass

[Window Washers]

if it keeps happening just dont touch top of frame.

next time just scrub the top alot and rinse more and see if still happens, if not follow the above

[dave f]

if you can rub your finger on paint  residue comes of on your finger its that i have a couple i found to be like that i just trad em

[Steve Sed]

if you can rub your finger on paint  residue comes of on your finger its that i have a couple i found to be like that i just trad em

I find a longer rinse below the top frame does the job.

[R.C Property]

I do a few of these painted, upvc and metal ones. I still wfp and just give them a good rub with brush and rinse more soon stops, well till next time, but after several times its not as bad

[Smudger]

you require a lote more rincing for these i also spray with virosol or g101 or simular

takes off anything thats loose and then it's not a problem

Darran

[Steve Sed]

you require a lote more rincing for these i also spray with virosol or g101 or simular

takes off anything thats loose and then it's not a problem

Darran

Would Magica one go work? 

[mark dew]

if you can rub your finger on paint  residue comes of on your finger its that i have a couple i found to be like that i just trad em

I find a longer rinse below the top frame does the job.

Yeah me too.

re the op
As it's the 1st time cleaning they will most probably bed themselves in and come up good after a couple of cleans. Or hopefully next time if you are rinsing enough.

[Klean07]

Thanks for replies guys. I did trad them last time but will try extra rinse next time!

[dave0123]

I had one before Christmas but it was upvc,

Like a big milk bath just used lots and lots and lots of water and rinsed lots they came up superb. Not sure what they will be like on next clean though.

[telfordwindowclnr]

Come across this a lot in the past on paint and upvc. Just keep scrubbing and rinsing. They'll come good.