Hi guys, a dental surgery I clean have asked me to remove the hard water marks on Their skylights, there's 7 in total and they are quite badly marked. How hard is it to remove these marks? And what's best to use?.
Is it a time consuming job? Coz I have no idea what to charge for it.
Thanks in advance.
Paul.
Is it a time consuming job? Coz I have no idea what to charge for it.
Thanks in advance.
Paul.