This. You’re better off with a nice insulated extension and big skylights. My mum has a conservatory in her house (was there when she bought it). I spent a lot of energy putting her off adding a roof to it recently. I really thought that would make a pointless thing even more pointless. That said, she enjoys sitting in there on a warm sunny day so each to their own. They’re definitely either too hot or too cold though.Nope.
Cold in the winter, oven in the summer, will eventually leak, pain to clean.
usually have a un-used treadmill or Cross-trainer covered in piles of washing in them!Nope.
Cold in the winter, oven in the summer, will eventually leak, pain to clean.

Where does this live? Down the garden?We have a brick built ‘garden room’ with double skin insulated walls, insulated slab and a solid insulated roof and velux windows. 100X better than a traditional conservatory.
One wall is bifolds and the other is about 60% glass.
You can heat with in winter without any issue and the summer it’s nice, lots of light and very pleasant.
This is the only way. It's expensive though. And quite near just getting two floors done.Orangery!
We have a brick built ‘garden room’ with double skin insulated walls, insulated slab and a solid insulated roof and velux windows. 100X better than a traditional conservatory.
One wall is bifolds and the other is about 60% glass.
You can heat with in winter without any issue and the summer it’s nice, lots of light and very pleasant.