Hi all,

We have 4 sliding windows (2 approx 3' x 3', 2 approx 6' x 3'), a diamond pane lattice window (circa 1960, 7.5' x 4'), and a large window which has 2 casement windows but is mostly a glass pane (8' x 5'). We want to replace all the sliding windows with double paned windows and the really large one with a bay window. We're also going to replace a sliding glass door at the same time, maybe with a 4 panel sliding door.

My questions -

1) I REALLY want to keep the original lattice window, it is one of the things I LOVE about this house. How can I make it more weather proof (North facing wall under overhang - we live in Arizona so protecting against outside heat more important than outside cold)? GC who replace two windows as part of our kitchen remodel suggested either replacing each pane with insulated glass or putting a sheet of glass inside to form a double pane. What do you think?

2) Given the size of the sliding windows, it is better to go with sliding windows again or are other options better (windows are only opened in the early spring and late fall, otherwise its too hot or too cold)?

3) I have two indoor cats - what are my screen options with the 4 panel patio doors? I'd like hidden ones so as not to block the view of the pool but don't know how well they seal and could keep the cats inside.

4) I was thinking of using the GC who did our kitchen to replace everything - replacing windows and doors is one of his "specialties;" I know he will do a great job, especially on the bay window; and I'd have him replace our front door and put in some 4 panel sliding interior doors in part of our house. DH wants to just use a window company to do the job. What are the relative pros and cons of each route? We haven't gotten any estimates but my one concern is that the GC will be more expensive (he's not cheap but does great work). Any input/advice would be appreciated.

Thanks,

meo

Here are some pictures:

Lattice:

Casement: