I did a landlord inspection on an open flue gas fire on saturday. Its about 20 years old, never failed an annual inspection before. Passed flue flow and spillage no problem. When i checked in the loft i found the selkirk 5" flue came out the precast about a foot with about a 15 degree rise from horizontal, then to a 90 degree bend following pitch of roof then to a 45 degree bend up to a ridge terminal. no clips just duck taped to wood that had been screwed between the trusses. So thats, no clips, resting on combustible material and a 90 degree bend. I AR'd it as it was performing satisfactorily. Im convinced i ve done the right thing in AR it but you doubt yourself when its passed so many before!