"Gill Smith" wrote
I want a solar roof

so the top storey of my house becomes a roof conservatory/greenhouse

Remember seeing an old Victorian Mansion in Egham that had, what can best be
described as, a greenhouse on the roof 3 storeys up. Always thought that a
wonderful idea.
Mind you, they obviously had servants to carry all the plants and compost
etc up and down.

--
Regards
Bob Hobden
W.of London. UK