Thanks Tony.
As the engineer appears to be 'legal', it will come down to whether Gas Safe believes the engineer did a good job issuing the certificate, in the face of the evidence that the flue, which is visible at the point of damage, has been leaking for a long time.
I have no confidence in organisations which 'represent' trades. I had a very bad experience with RICS and a poor surveyor.
As the engineer appears to be 'legal', it will come down to whether Gas Safe believes the engineer did a good job issuing the certificate, in the face of the evidence that the flue, which is visible at the point of damage, has been leaking for a long time.
I have no confidence in organisations which 'represent' trades. I had a very bad experience with RICS and a poor surveyor.