Accordingly to uzins tech sheet, it can’t be used in south facing conservatories I am a lover of ke 66 but it can’t be used in the above areas!
Did a black Da Vinci Tiles Job 4 years back in Uzin KE66 after being told it’s perfect for sunlight by the tech rep. It’s not moved a mm as been back there a lot over the years. Tech sheets are to cover themselves mate