All good points - pros and cons with each! I ended up choosing centrally-opening sliding stackers because of the engineering required in retrofitting bi-folds (that needed to be top-hung). Chose semi-commercial, double-glazed from Rylock and very happy. The double glazing is worth the extra, especially for sunny positions. Keeps a lot of heat out and also noise. I also have 5.2m centrally-opening, retractible fly screens (by Centor) and their track fits seamlessly and smartly next to the window tracks. Worth noting that with bi-folds the fly screen would need to be fitted internally rather than externally and sometimes that might need a deeper reveal. ... Unless the screening of the entire patio area is possible, as suggested by other Houzzers above. Great idea, but could be rather expensive if you have a three-sided patio and want them all to be retractible! (PS. In case you're wondering, I don't represent either of the companies mentioned!). Good luck hfranze!
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spice drawer pull out
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