Hi Neeno, I've seen the use of Zebra ( vision ) ROLLUP blinds with one for each side that will cover down to the lower half window rather than having four blinds and have them fitted to the outside top edge and to the side edges of the pelmets ( window frames.) (If you get to see utube video clips your see what I mean . ) The avantage of doing it that way will allow you to buy only two blinds rather than four . The cost difference between two blinds and extra fabric required to cover the two windows will most likely be cheaper than the extra cost of two extra roll tube mechanism / chains etc etc. when fitted in the recesses of the windows . Also ,due to the bulkeness of blinds , two would no doubt look better than four doing it the way I suggested . Fitting to the timber edges will offer a couple of advantages . One of which will clear the windout handles fitted to the opening widows . Two ,will offer better light reduction from night time lights as the blinds will cover right to frame edges. Three , the design of the Zebra blinds only requires a few inches of the chain movement to close up or open up for vision out or add privacy where normal blockout ROLLUP blinds needs more adjustments and will not offer the same privacy options that the Zebra blinds can offer . Also, if in bed you can open the Zebra blinds slightly by a few inches or roll up just above the top of the lower window ,depending on how much vision and privacy you need and look out of the window whilst still in bed. Being such narrow windows, the small bit of wall between them proberly would not mater if one blind fitted at the top came down over that wall area down to the bottom window. Also you should concider the solar film tinting to offer improved privacy and insulation & fade protection etc for when blinds or even curtains etc are opened up altogether . Although I'm in Tasmania , I have a manufacturer I deal with on the mainland that could arrange sale / installation if required using the Zebra blinds or other types as well contacts for window

Thanks for this suggestion. I need to be as snug as possible in the cold winter months here in Beechworth, ( the rest of the year is glorious), and I'm looking for the most effective insulation for the windows. I believed cellular blockouts would achieve this, but then thought Double glazing + blockout might be "over the top". I can't see draped curtains being so effective; perhaps I might settle for the blinds, and add some curtains for decorative effect. I can pay $3000.00 if they will achieve the insulation I need.

Different rooms will need diff solutions. You can hang blinds on the windows themselves or mount blinds or curtains on wall above window, just make sure they are mounted out far enough for the window to be tilted open and with curtains that you can draw them back clear of the window to allow it to swing open. Looks like you have wall space in the living pictured.

You could go with curtains that run across the whole wall that follow the fall of the ceiling. This would read as one large fabric ‘wall’ rather than two angled ‘slices’ of window making the space seem larger. A double track system with blockout and sheers would stop the hot sun and still allow beautiful softened light in the room and full view with curtains pulled back.