Thanks, sounds promising. One issue I have is that the shortest span in our conservatory is 4.2m (x5.5m), so I’ll need to use heavier timber to stay straight over that length. I’d LIKE to use thicker insulation board than 25mm as well but, of course, this adds even more weight.
I could simply put a new drop light onto the existing fitting too which would make the electricals as easy as they can possibly be.