Any idea what is causing this haze?

Here’s a pic of a commercial job we do regularly. This pic was taken after the window was just cleaned. As you can see, there is somewhat of a film on the glass surface. You can even see the suction cup marks from installation. I have cleaned this piece of glass at least five times in the past few years yet the haze remains. Any idea what this is?

http://dl.dropbox.com/u/30180752/IMAG0720.jpg

its in between the panes … looks like it was manufactured incorrect

It’s not between the panes. It’s on the #4 surface.

Could it be under a laminate coating.

No, it’s on the surface. It just doesn’t come off with solutions and squeegees.

What chemicals have you try so far?

hmmmm,is that paint drops or bird doodoo?