I've never heard that Solar Shades are to be used on the exterior only and I've seen plenty of use on double pane windows within the house. If a shade had an insulating effect and was sealed along the edges or had sealed side tracks, then that would not be safe to use with double pane. Solar screens are just that.....screens. They go outside the window just as any other type of screen is used. Roller shades can be decorative lightweight window coverings, but the term 'roller' is also used for the Solar Shades since they are usually on some type of roller system. It sounds like Solar Shades will fit your need. Here is a link that might be useful: Interior Shades

I have roman shades in the bedroom. They are mostly decorative and a bit of a nuisance to open and close. I do close them at night, but have to fuss with the folds every morning when pulling them up. Light leaks in around the edges. I guess there are various kinds of roman shades. Mine are zero fuss and fit close to the edges and are cordless, top-down bottom-up. Even without the side panels mine are close to the edge in an inside mount. measured to fit. You may be referring to more designer custom fabric-y style roman shades???

Wow, what a beautiful home! You must be so excited. Are you looking at shades for privacy/light control? I never consider shades/blinds as window treatments. They are a necessity that should not be seen whenever possible. We have had pleated shades for over 30 years. They have been replaced just one time. Our original ones came from Sears and Penney's. They were very inexpensive. We recently got some for our second home. They were purchased at Home Depot , again very reasonable. They are kept completely up during the day and are pulled down only at night. I greatly dislike the look of shades from the outside because they often look like sheets hanging at the Windows. I always have curtains at the Windows so that they add warmth and softness.

Trying to figure out the quality differences between Bali cellular shades vs. Budget Blinds La Tour vs. Budget Blinds Enlightened Style Seasons. Bali from Lowe’s is much cheaper, and the same Bali style is much more expensive at Penney’s! Then I am looking at Budget Blinds which appears to have a better warranty than Bali and I’m assuming it’s better quality. Really hoping I get some feedback on this.... thanks so much.