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removing dried concrete splashes from glass

Posted: Mon Jun 13, 2011 10:36 pm
by alan hr
How can I remove dried concrete splashes from the outside of my double glazed conservatory window?
The reason it has dried is because I assumed it was bird droppings and was in an awkward area to reach.
It splashed onto the window when my neighbour was building their extension.
Concrete descaler has been suggested, but I will try nothing until I have asked professionals.
Thanks.

concrete

Posted: Tue Jun 14, 2011 6:55 am
by welsh brickie
yes you can use brick acid,it will dissolve it

Posted: Tue Jun 14, 2011 2:03 pm
by alan hr
Many thanks for your comment/reply.
Do I need to be careful and not let any acid run onto the UPVC window frame?
Thanks again for your assistance.

concrete

Posted: Tue Jun 14, 2011 5:31 pm
by welsh brickie
no it should be fine once you apply the acid wash off 5 minutes later with clean water.