sm_jamieson wrote:

I realize this is not your point, but some housebuilders are using
fibreglass chimneys. They are far enough away from most viewpoints to
look like brick.
Simon.

Surely if the chimney is inside the structure it doesn't matter what it
looks like? A pair of concentric stainless pipes, some insulation, and
a Tudor-style pot on the roof and you are away!

Andy