After I had finished my Archi Masters I was working for an architecture firm who also did a small amount of work for a volume builder. They were actually a pretty good quality builder and at least got the orientation of their 'pre-designed' plans correct. We had the ability to make minor changes to every job and it pained me to see so many simple to implement passive options not being incorporated. Had most of their clients known that they would be saving MONEY over the longterm by making a few minor changes to suit their site, they all would have done it. The problem is unless someone can sell this idea to them as a financial/lifestyle choice, many just think it is about saving the world. It is a no-brainer if you have in interest in it, but for those who don't know, there is no-one there selling it to them, especially on the lower end of the market.

Indeed an interesting thread an I must admit that I've been going cross-eyed extracting as much information from your two images as I can. A very challenging dilemma. I can't speak for the glazing. It's not my area of expertise. I'm inclined to agree with other comments in this thread re leaning towards internal window treatments. The long raking window at top presents special challenges and as Envirotecture has indicated it would meaning being open to the consideration of framing your view somewhat. Here are some ideas which might be worth considering. 1. A fixed curtain for the upper raking window. Given the room is very much about light, a sheer, though not providing the same insulating properties as curtains or heavier drapery, would nevertheless, provide some insulating benefit from the air-gapping effect. A fixed curtain (sheer or otherwise) is likely to be one of the cheaper components in the options I'm listing. 2. It's hard to tell from the images how much more the 'conventional' rectangular space beyond the couch extends. Assuming it does not extend the entire length of the side of the house you have a number of options available to you here. Options which could Include Soft Roman Blinds fronting on sunscreen roller blinds. Pelmets would provide substantive insulating benefits, but it is difficult to see from the image whether they would suit, and whether you would have sufficient height, or 'any height' above that window in which to mount them so as to minimise the loss of window view due to the stacking up of the Roman. The sunscreen rollers are less problematic in that regard and provide some insulation while still allowing light when the Romans are not lowered. If opting at any stage for Romans, ensure they are properly lined with pre-stiffened Roman Lining which provides better insulation, but almost more importantly, will not sag over time such is the case with many Romans that are lined with much cheaper curtain lining which is not pre-stiffened and does not afford the same degree of insulation. 3. Along the main alfresco expanse where the table is located, and under the previously proposed location of the fixed curtains along the raking window, a motorised or hand traversed S-Fold or Wave curtain fronting, yet again, more thermal sunscreen roller-blinds could present an attractive modern look in keeping with the modern style of the room and house. Of course, an issue is going to be stack-back when the curtains are open, however, the double layered protection of both a Wave or S-Fold curtain and Roller Blinds will provide superior insulating benefits to tinting throughout the year (not just summer) imho. 4. Other ideas include Plantation Shutters across the raking/eve window above. I doubt very much that plantation shutters would work along the lower 'framed' area as the stack-back effect if bi-fold, or loss of view if sliding, would be too much of a sacrifice, let alone the additional consideration of the cost of such treatment used so extensively. Although, the window treatments i have suggested for possible consideration do not necessarily offer optimum insulation (eg the exclusion of pelmets or use of heavy lined drapery), I believe that you there would be some offset in terms of a positive ROI over time due to the savings you will reap on your heating/cooling bills. I'm in Melbourne which is marginally warmer, and without adequate insulating window treatments, the heat loss through the glass is substantial and the heating/cooling bills frightening. 5. That's a hell of a lot of glass to treat whether you opt for a glazing solution which will provide primary benefit during the summer or conventional internal window treatments - whether drapery or blind. Either way the solution is likely to be costly. To keep the cost down you could always consider high quality Thermal Verticals which can come in a variety of slat sizes colours and textures and provide substantive savings over the Wave or S-fold solutions with less stack-back loss. Once again ensuring you purchase high quality verticals that will hold up to the Australian sun over the long haul is important. The cheaper stuff might look good but you'll be picking slats off the floor within 5 years if you are not careful. Here is an image from one of our own projects where high quality 'chain-less' verticals were used to cover large expanses of glass throughout the house in combination with thermal roller blinds. Of course, this treatment or the use of Wave/S-fold curtains would only provide part of the overall solution you require. 6. The only solution I didn't yet mention is the use of folding arm awnings. While they would provide benefits during the summer, they would be more than likely at the expense of your expansive view (or part thereof). Quality awnings whether manually operated or motorised are also costly. The only other comment I might make is that internal blind and curtain window treatments provide you with a high degree of flexibility. Romans, for example work well in combination with many other window treatments, either along side them, or in combination with each other in the context of the same window. The same can be said for the other treatments I have mentioned. The internal window treatments suggested can also facilitate the ability to support a style transition from one room or area to the next. - An important consideration if the house is of a uniform style throughout and you are wanting to 'mix it up a bit' or transition to styles that vary yet compliment the primary style or look you may have throughout the house. I'm sorry, it is difficult offering suggestions based on your two images, even though they are of good quality and detailed. I don't envy you with this 'design dilemma' ... though it certainly gets my vote as one of the more challenging ones I have seen in recent times, and in an area/topic where I felt I could contribute.

Hi Debbie, Just adding to your dilemma, until recently we had lovely offices in Sydney with each room having one wall of full height sliding doors, with wonderful day time views and night time lights. We installed very nice manual Roller blinds for when privacy was needed, but I still wasn't happy with the look either day or night. I love the lovely soft curtains that Mel n suggested but hubby wouldn't be happy as there would n't be any privacy at night unless they had a separate lining. So saying that I still think internal "Plantation" shutters that bi fold across the openings would really add something to your open plan room, I was also thinking sliding stacking panels, you could ask a local supplier to come out and discuss. These shutters are larger and easier to clean. I'am adding some more photos for you. On another note, I hope Debbie doesn't mind my mentioning this but Debbie suffered damage to her home at the hands of her name sake "Cyclone Debbie", when a very large neighbours tree fell down on her property causing a lot of damage, very hard to see your hard work ripped apart. You will get there again Debbie xx The large Plantation shutters look the best to me You mentioned new ceilings etc this could be done if you were having curtains Your view with undercover outdoor area added

We've just installed roller blinds. We're on acreage so privacy is not an issue. However, we did put block-out blinds in the bedrooms (for sleep purposes) and sunscreen mesh fabric blinds in all other rooms. Re the latter, you can see through them whilst still retaining privacy. They stop 85% of the sun's heat and up to 99% UV. We moved to the northern rivers area of NSW earlier this year so we'll see how we fare in the summer. I suspect the see-through blinds will be down most of the time but because they're almost transparent they don't block the light.