Product Photography - Shooting Windows

I'm due to take some photos of some double glazing installations later today for use in a company brochure. Theses have already been installed in the houses and it's quite a sunny day. They will also be used in a presentation on Weds so timing is tight.

Any tips?

Thanks

Here's a website with some samples. They're advertising the treatments themselves, but I think the same theory/process would apply.

http://www.trendir.com …at_window_treat​ments.html

My thoughts would be take a Circ Polariser with you to cut down the reflections from the glass.