Staining (effervescence) on glass windows and doors from lime in plaster

Jane98

Hi,

I completed a renovation on my house last September. Just recently I noticed that there was streaks/stains on the large glass windows and sliders. When I tried to remove them they wouldn't budge. When I mentioned it to my builder (who I still owe a small retention to) he tried various different solutions but without success and thereafter contacted a window cleaning company who informed him they were seeing it a lot lately, was caused by lime coming from plaster finish and it was impossible to remove.

Anyone see this recently and have any advice/tips?

I will be mighty p***ed off if after paying the guts of €30k for windows they are ruined by stains.

jimbev

cement-residue-remover -snip-
Maybe a product on this page might help

stoplooklisten

Ammonia solution with washing up liquid gets rid of most mineral deposits.

Wadpie

Is it the glass or the frames that are stained?

massy086

I am a glazier and a builder recently called us in to replace the glass on 6 Windows on the neighbours house of his client. They had got splashes of plaster on the glass and had try,d everything to remove it but no luck

Polo_Mint

Jane98 wrote: »

Hi,

I completed a renovation on my house last September. Just recently I noticed that there was streaks/stains on the large glass windows and sliders. When I tried to remove them they wouldn't budge. When I mentioned it to my builder (who I still owe a small retention to) he tried various different solutions but without success and thereafter contacted a window cleaning company who informed him they were seeing it a lot lately, was caused by lime coming from plaster finish and it was impossible to remove.

Anyone see this recently and have any advice/tips?

I will be mighty p***ed off if after paying the guts of €30k for windows they are ruined by stains.

If its a mineral on the window you will need to use something Acidic.

This is due to the lime being Alkaline, You will be fighting the PH level

Have you tried Vinegar to remove it?

Jane98

Polo_Mint wrote: »

If its a mineral on the window you will need to use something Acidic.

This is due to the lime being Alkaline, You will be fighting the PH level

Have you tried Vinegar to remove it?

Yes, we tried vinegar to no avail.

Jane98

Wadpie wrote: »

Is it the glass or the frames that are stained?

It's on the glass

Polo_Mint

Jane98 wrote: »

Yes, we tried vinegar to no avail.

How long did you leave the vinegar on for?