[windowwashers]

Did a job today on a con roof (GLASS) not very big at all 8 panels with a window in one (leanto) type.

After 2 hours I gave up I tried everything I had to remove the little black spots nothing worked, tfr, wfp, hot soapy water, sugar soap, gg4, pressure washer it would not budge, in the end I said to the lady this just is not coming off, she said it looks cleaner so thats good, I charged half the price as I was embarrassed, I said I would come back and get another cleaning agent for it and not charge she is over the moon anyway.

what else is there that will get this off, the glass seems to have a mirror finish never had this problem with a con roof ever this has stumped me.


Ian

[AuRavelling79]

What's the con roof made of? Glass? Polycarbonate?

[windowwashers]

What's the con roof made of? Glass? Polycarbonate?

glass says in title, will change post aswell as not to clear.

Ian

[Xline Systems]

has the pigmants gone on the roof? ie discoloured. or is it just muck that wont budge?

[simon knight]

The little black spots are probably mould. Get a couple of those silver non-abrasive scourers from Asda (35p each) and glue them to a cut-down T-bar...loads of soapy water and scrub.

Works a treat and never a scratch in sight.

[Xline Systems]

i didnt realise you meant glass. cant you put a scrapper on the end of a pole?

[windowwashers]

has the pigmants gone on the roof? ie discoloured. or is it just muck that wont budge?

muck, rest of glass is sparkling thousands of little spots (they come off to a non scaratch scour pad after say a 15 sec scrub hard on glass I got off about 1inch by 1 inch in half a min, not doing it all like that as would be there about 2 weeks and there is no access other than my reach.

Ian

[simon knight]

has the pigmants gone on the roof? ie discoloured. or is it just muck that wont budge?

muck, rest of glass is sparkling thousands of little spots (they come off to a non scaratch scour pad after say a 15 sec scrub hard on glass I got off about 1inch by 1 inch in half a min, not doing it all like that as would be there about 2 weeks and there is no access other than my reach.

Ian

Sounds like the mould has etched the glass. Don't think there's a lot you can do about it. I think 2 weeks of your time would be more expensive than replacing the cons roof

[Ian W]

I can only suggest putting a scraper on the end of your pole. If that doesn't shift it then I don't think anything will... 

[LWC]

bleach? as harsh at that sounds, i cleaned dads caravan and it had black spots on the roof, the bleach took them off!

[Rob.Hall]

Its not self clean glass is it.

Some crud is a pain to shift of that. Almost glues itself to the surface.

[frames to panes]

overspray from fence painting?

[cherubs cleaning]

hi ian,


is it on all of the panes,


jerry

[windowwashers]

hi ian,


is it on all of the panes,


jerry

Yes m8 some are worse than others, it is not paint it is dirt, but hardcore dirt.

good day turned nightmare

Ian

[cherubs cleaning]

000/0000 wire wool over your applicaator/


that might help




jerry

[windowwashers]

000/0000 wire wool over your applicaator/


that might help




jerry

will it not scratch off the glass, looks to me a mirror type coating on it, did not scratch with a s/pad though.

Ian

[cherubs cleaning]

ian will not scratch






jerry

[Alex Wingrove]

litchin, its a bum, the only way to get it off patios or driveways, is to use a very powerful pressure washer, mine is 3600psi, and only when i hold the nozzle one inch away it gets it off,

i had it once on a conservatory, i used a yellow microfiber sill cloth on the end of some bamboo, which i found, and it came off, but if its on there your best bet is to get some Powerfull, hard surface cleaner from janitorial supplies, wont shift, it but its softens, so you can get it off with the cloth

[john classic]

quite a few of my punters have used one of these sprayable fence treatments near cons ,the result is black/ brown spraydrift on the plastic and glass
                           
could it be this ??

[peter holley]

i had thisz problem once, it was like algea, but only on the plastic of the roof.... i had to use a scouring pad on the end of a wc pole.... it took ages

we live and learn