A comment
I thought for a long time before deciding to install a stretch ceiling on the loggia. I read various reviews, both positive and negative, in the end I came to the conclusion that you need to try it yourself and then judge.
I chose fabric seamless ceilings, my loggia is not heated, just a little insulated. Installation was quick, everything looks beautiful. In addition, they put energy-saving light bulbs, in general, now I just relax on the loggia, it is comfortable there as it became.
My ceiling survived the winter, it did not crack normally, deformation did not appear. So I can safely advise. Stretch ceilings look stylish, the price is normal, the quality is excellent, the color palette is huge, there are plenty to choose from. So do not be afraid to install stretch ceilings on the loggias and balconies, even in my unheated room with ceilings, nothing happened, I advise!