I have been searching on ebay and google but not come up with any long enough.
They have to be quite thick as it is old windows - French doors rather, so thicker the better (barring concrete, it doesn't 'drape' well )
The windows are 120" or 10ft long, width isn't enormous (maybe about 8-9ft) but the length is a real problem.
I don't know how to make good curtains either, but it might be the only option!
Thanks