[Paul T]

Did a builders clean today .
House has been completely re rendered.
Used scrapers and plenty of soap but still could not get all the cement residue off the glass .
Someone suggested wire wool.
Surely this will scratch glass .?
If not whete do I buy it from and how do I go about cleaning

[tonyoliver]

wire wool do they hate you? slowly soap off the cement and scape with a top quality scraper rinse off the excess rinse rinse and rinse again

[Paul T]

Yeah did all that mate . New blades plenty of soap still got marks left on the windows .
So you reckon the wire wool is a wind up ??

[deeege]

I did a similar one last week. Never in a million years will you get them 100%. I just cleaned them as much as budget would allow and told the site manager to get the renderers back, his problem.

[Paul T]

Yeah they're animals some of these builders they just think don't worry leave it for the window cleaner to get it clean ..
What's the best way to get cement off the frames and sills ?

[Clever Forum Name]

I think you mean bronze wool pads lol.

[Paul T]

Is that the best stuff to use ?

[Paul T]

Used Cif and a kitchen scourerer to get cement off plastic but that didn't manage to shift all of it !

[Clever Forum Name]

I use this and wfp

http://www.tool-net.co.uk/p-351327/belle-clean-concrete-dissolver-650ml-spray-bottle.html

[Paul T]

Do you spray on brush head for upstairs windows ?
How long do you leave to soak in ?

[Clever Forum Name]

Do you spray on brush head for upstairs windows ?
How long do you leave to soak in ?

30mins i would say. Sometimes longer.

No i use a pump up sprayer or go up a ladder.

[tonyoliver]

wire wool a wind up yes!!!! lots of  slow  and methodical work well wetted will do it SLOWLY  SLOWLY CATCHY MONKEY

[SeanK]

Use cement off from Titan Labs www.youtube.com/watch?v=kMA95_RGIj4

[Paul T]

Thanks for the advice fellas

[Tom-01]

If you use wire wool grade 0000 apparently its fine. There was a Youtube video of a window cleaning company in Australia and he was using it, looked great.

[Jonny 87]

000 wire wool is fine.

Bronze wool is even better.

Although they are a still or wire wool, they don't scratch the glass.

Bronze wool has the added benefit of making glass hydrophilic, so after you've cleaned a window with that, it's a doddle to WFP after.

[SeanK]

Don't use any sort of wire wool to remove concrete from glass as the grit will also rub with the wool
and dull or scrape the glass.
The only way is to soak/ loosen the concrete and carefully scrape it off.

[Alex Wingrove]

Use cement off from Titan Labs www.youtube.com/watch?v=kMA95_RGIj4

I concur

Or any cement remover that you spray and leave, and it attacks the hardening agent in the cement