On 18/01/2014 07:44, harryagain wrote:
....
The salesman is going round looking for South facing, shadow free roofs.
I expect he will also be attracted to bungalows as scaffolding cost less.
Concrete tiled roofs will also be attractive.

They are the current equivalent of double glazing salesmen. An ideal
roof, to them, is one without panels on it and they will sell to anybody
who says yes.

Colin Bignell