Got a job to clean oxidised windows on a supermarket roof.
There are heat blinds in front of the glass to protect in high temperatures - but these are fixed and stuck on open.
We have nine ribs of 50 x 1 metre by 1.5 metre runs of glass all in the same condition.
They have all been citrus cleaner presoaked, jet washed, they have had a descale applied and rinsed off and have been cleaned traditionally.
Nothing has worked - I need to find a formula that will allow me to prespray and rinse off.
To do by hand would take about 20 - 30 minutes each unit times by 450 units - there are eight slats across each window with clearance of about 25mm.
Anyone got any experience of cleaning anything like this
Rob
