I promised a lady that I would remove a serious amount of limescale form two windows, caused by a leaking overflow pipe just above them. They are seriously furred up, must have been leaking for a long time, and I just wanted some tips on the best stuff to get it off,as quickly as possible.
Previously Ive shaved off with the poo scraper, which does work, but takes ages.
What do you guys use on these?