Here is what you wrote:Still hasn't answered my very simple question... How convenient!
John... Let's ask this in a very clear way...
How are you going to get around the fact that a boiler flue (condensing OR NOT) is not allowed to terminate into/onto land which you do not own?
Your exemption is irrelevant because your existing boiler is already non-compliant and a new one would HAVE to be compliant.
That was answered in my post, posted at 11:14.